initial commit
Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>
This commit is contained in:
584
libs/wxWidgets-3.3.1/interface/wx/filedlg.h
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584
libs/wxWidgets-3.3.1/interface/wx/filedlg.h
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/////////////////////////////////////////////////////////////////////////////
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// Name: filedlg.h
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// Purpose: interface of wxFileDialog
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// Author: wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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enum
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{
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wxFD_OPEN = 0x0001,
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wxFD_SAVE = 0x0002,
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wxFD_OVERWRITE_PROMPT = 0x0004,
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wxFD_NO_FOLLOW = 0x0008,
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wxFD_FILE_MUST_EXIST = 0x0010,
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wxFD_CHANGE_DIR = 0x0080,
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wxFD_PREVIEW = 0x0100,
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wxFD_MULTIPLE = 0x0200,
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wxFD_SHOW_HIDDEN = 0x0400
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};
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#define wxFD_DEFAULT_STYLE wxFD_OPEN
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/**
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Default wildcard string used in wxFileDialog corresponding to all files.
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It is defined as "*.*" under MSW and "*" everywhere else.
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*/
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const char wxFileSelectorDefaultWildcardStr[];
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/**
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@class wxFileDialog
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This class represents the file chooser dialog.
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The path and filename are distinct elements of a full file pathname.
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If path is ::wxEmptyString, the current directory will be used.
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If filename is ::wxEmptyString, no default filename will be supplied.
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The wildcard determines what files are displayed in the file selector,
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and file extension supplies a type extension for the required filename.
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The typical usage for the open file dialog is:
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@code
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void MyFrame::OnOpen(wxCommandEvent& WXUNUSED(event))
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{
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if (...current content has not been saved...)
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{
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if (wxMessageBox(_("Current content has not been saved! Proceed?"), _("Please confirm"),
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wxICON_QUESTION | wxYES_NO, this) == wxNO )
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return;
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//else: proceed asking to the user the new file to open
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}
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wxFileDialog
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openFileDialog(this, _("Open XYZ file"), "", "",
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"XYZ files (*.xyz)|*.xyz", wxFD_OPEN|wxFD_FILE_MUST_EXIST);
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if (openFileDialog.ShowModal() == wxID_CANCEL)
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return; // the user changed idea...
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// proceed loading the file chosen by the user;
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// this can be done with e.g. wxWidgets input streams:
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wxFileInputStream input_stream(openFileDialog.GetPath());
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if (!input_stream.IsOk())
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{
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wxLogError("Cannot open file '%s'.", openFileDialog.GetPath());
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return;
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}
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...
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}
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@endcode
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The typical usage for the save file dialog is instead somewhat simpler:
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@code
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void MyFrame::OnSaveAs(wxCommandEvent& WXUNUSED(event))
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{
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wxFileDialog
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saveFileDialog(this, _("Save XYZ file"), "", "",
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"XYZ files (*.xyz)|*.xyz", wxFD_SAVE|wxFD_OVERWRITE_PROMPT);
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if (saveFileDialog.ShowModal() == wxID_CANCEL)
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return; // the user changed idea...
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// save the current contents in the file;
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// this can be done with e.g. wxWidgets output streams:
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wxFileOutputStream output_stream(saveFileDialog.GetPath());
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if (!output_stream.IsOk())
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{
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wxLogError("Cannot save current contents in file '%s'.", saveFileDialog.GetPath());
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return;
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}
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...
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}
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@endcode
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@section filedialog_filters Wildcard Filters
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All implementations of the wxFileDialog provide a wildcard filter. Typing a filename
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containing wildcards (*, ?) in the filename text item, and clicking on Ok, will
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result in only those files matching the pattern being displayed.
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The wildcard may be a specification for multiple types of file with a description
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for each, such as:
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@code
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"BMP and GIF files (*.bmp;*.gif)|*.bmp;*.gif|PNG files (*.png)|*.png"
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@endcode
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On Mac macOS in the open file dialog the filter choice box is not shown by default.
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Instead all given wildcards are applied at the same time: So in the above
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example all bmp, gif and png files are displayed. To enforce the
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display of the filter choice set the corresponding wxSystemOptions before calling
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the file open dialog:
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@code
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wxSystemOptions::SetOption(wxOSX_FILEDIALOG_ALWAYS_SHOW_TYPES, 1)
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@endcode
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But in contrast to Windows and Unix, where the file type choice filters only
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the selected files, on Mac macOS even in this case the dialog shows all files
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matching all file types. The files which does not match the currently selected
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file type are greyed out and are not selectable.
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@section filedialog_customize Dialog Customization
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Uniquely among the other standard dialogs, wxFileDialog can be customized
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by adding extra controls to it. Moreover, there are two ways to do it: the
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first one is to define a callback function and use SetExtraControlCreator()
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to tell the dialog to call it, while the second one requires defining a
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class inheriting from wxFileDialogCustomizeHook and implementing its
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virtual functions, notably wxFileDialogCustomizeHook::AddCustomControls()
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where the extra controls have to be created, and finally calling
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SetCustomizeHook() with this custom hook object.
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The first approach is somewhat simpler and more flexible, as it allows to
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create any kind of custom controls, but is not supported by the "new style"
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(where "new" means used since Windows Vista, i.e. circa 2007) file dialogs
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under MSW. Because of this, calling SetExtraControlCreator() in wxMSW
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forces the use of old style (Windows XP) dialogs, that may look out of
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place. The second approach is implemented by the MSW dialogs natively and
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doesn't suffer from this limitation, so its use is recommended, especially
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if the few simple control types supported by it (see wxFileDialogCustomize
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for more information about the supported controls) are sufficient for your
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needs.
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Both of the approaches to the dialog customization are demonstrated in the
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@ref page_samples_dialogs, please check it for more details.
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@note New style file dialogs can only be used in wxMSW when the apartment,
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COM threading model is used. This is the case by default, but if the
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application initializes COM on its own using multi-threaded model, old
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style dialogs are used, at least when they must have a parent, as the
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new style dialog doesn't support this threading model.
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@beginStyleTable
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@style{wxFD_DEFAULT_STYLE}
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Equivalent to @c wxFD_OPEN.
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@style{wxFD_OPEN}
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This is an open dialog; usually this means that the default
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button's label of the dialog is "Open". Cannot be combined with @c wxFD_SAVE.
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@style{wxFD_SAVE}
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This is a save dialog; usually this means that the default button's
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label of the dialog is "Save". Cannot be combined with @c wxFD_OPEN.
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@style{wxFD_OVERWRITE_PROMPT}
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For save dialog only: prompt for a confirmation if a file will be
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overwritten.
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This style is always enabled on wxOSX and cannot be disabled.
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@style{wxFD_NO_FOLLOW}
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Directs the dialog to return the path and file name of the selected
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shortcut file, not its target as it does by default. Currently this
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flag is only implemented in wxMSW and wxOSX (where it prevents
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aliases from being resolved). The non-dereferenced link path
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is always returned, even without this flag, under Unix and so using
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it there doesn't do anything. This flag was added in wxWidgets
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3.1.0.
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@style{wxFD_FILE_MUST_EXIST}
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For open dialog only: the user may only select files that actually
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exist. Notice that under macOS the file dialog with @c wxFD_OPEN
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style always behaves as if this style was specified, because it is
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impossible to choose a file that doesn't exist from a standard macOS
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file dialog.
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@style{wxFD_MULTIPLE}
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For open dialog only: allows selecting multiple files.
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@style{wxFD_CHANGE_DIR}
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Change the current working directory (when the dialog is dismissed)
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to the directory where the file(s) chosen by the user are.
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@style{wxFD_PREVIEW}
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Show the preview of the selected files (currently only supported by
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wxGTK).
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@style{wxFD_SHOW_HIDDEN}
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Show hidden files. This flag was added in wxWidgets 3.1.3
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@endStyleTable
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@library{wxcore}
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@category{cmndlg}
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@see @ref overview_cmndlg_file, ::wxFileSelector()
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*/
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class wxFileDialog : public wxDialog
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{
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public:
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/**
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Constructor. Use ShowModal() to show the dialog.
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@param parent
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Parent window.
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@param message
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Message to show on the dialog.
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@param defaultDir
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The default directory, or the empty string.
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@param defaultFile
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The default filename, or the empty string.
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@param wildcard
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A wildcard, such as "*.*" or "BMP files (*.bmp)|*.bmp|GIF files (*.gif)|*.gif".
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@param style
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A dialog style. See @c wxFD_* styles for more info.
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@param pos
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Dialog position. Not implemented.
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@param size
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Dialog size. Not implemented.
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@param name
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Dialog name. Not implemented.
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*/
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wxFileDialog(wxWindow* parent,
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const wxString& message = wxFileSelectorPromptStr,
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const wxString& defaultDir = wxEmptyString,
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const wxString& defaultFile = wxEmptyString,
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const wxString& wildcard = wxFileSelectorDefaultWildcardStr,
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long style = wxFD_DEFAULT_STYLE,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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const wxString& name = wxFileDialogNameStr);
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/**
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Destructor.
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*/
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virtual ~wxFileDialog();
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/**
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Add a directory to the list of shortcuts shown in the dialog.
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File dialogs on many platforms display a fixed list of directories
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which can be easily selected by the user. This function allows to add
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an application-defined directory to this list, which can be convenient
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for the programs that use specific directories for their files instead
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of the default user document directory (see wxStandardPaths).
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Currently this function is only implemented in wxMSW and wxGTK and does
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nothing under the other platforms. Moreover, in wxMSW this function is
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incompatible with the use of SetExtraControlCreator(), if you need to
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use this function and customize the dialog contents, please use the
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newer SetCustomizeHook() instead.
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The @ref page_samples_dialogs "dialogs sample" shows the use of this
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function by adding two custom shortcuts corresponding to the
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subdirectories of @c WXWIN environment variable if it is defined.
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@note In wxMSW, the shortcuts appear in a separate section called
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"Application Links" by default. To change the title of this
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section, the application can specify a value of the @c
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FileDescription field of the version information structure in its
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resource file -- if present, this string will be used as the
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section title.
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@param directory The full path to the directory, which should exist.
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@param flags Can be set to @c wxFD_SHORTCUT_BOTTOM (which is also the
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default behaviour) to add the shortcut after the existing ones,
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or @c wxFD_SHORTCUT_TOP to add it before them. Support for the
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latter flag is only available in wxMSW, in wxGTK the shortcuts are
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always added to the bottom of the list.
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@return @true on success or @false if shortcut couldn't be added, e.g.
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because this functionality is not available on the current
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platform.
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@since 3.3.0
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*/
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bool AddShortcut(const wxString& directory, int flags = 0);
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/**
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Returns the path of the file currently selected in dialog.
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Notice that this file is not necessarily going to be accepted by the
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user, so calling this function mostly makes sense from an update UI
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event handler of a custom file dialog extra control to update its state
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depending on the currently selected file.
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Currently this function is fully implemented under GTK and MSW and
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always returns an empty string elsewhere.
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@since 2.9.5
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@return The path of the currently selected file or an empty string if
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nothing is selected.
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@see SetExtraControlCreator()
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*/
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virtual wxString GetCurrentlySelectedFilename() const;
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/**
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Returns the file type filter index currently selected in dialog.
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Notice that this file type filter is not necessarily going to be the
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one finally accepted by the user, so calling this function mostly makes
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sense from an update UI event handler of a custom file dialog extra
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control to update its state depending on the currently selected file
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type filter.
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Currently this function is fully implemented under macOS and MSW and
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always returns @c wxNOT_FOUND elsewhere.
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@since 3.1.3 - MSW
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@since 3.1.5 - macOS
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@return The 0-based index of the currently selected file type filter or
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wxNOT_FOUND if nothing is selected.
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@see SetExtraControlCreator()
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@see GetFilterIndex()
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@see SetFilterIndex()
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*/
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virtual int GetCurrentlySelectedFilterIndex () const;
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/**
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Returns the default directory.
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*/
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virtual wxString GetDirectory() const;
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/**
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If functions SetExtraControlCreator() and ShowModal() were called,
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returns the extra window. Otherwise returns @NULL.
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@since 2.9.0
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*/
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wxWindow* GetExtraControl() const;
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/**
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Returns the default filename.
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@note This function can't be used with dialogs which have the @c wxFD_MULTIPLE style,
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use GetFilenames() instead.
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*/
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virtual wxString GetFilename() const;
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/**
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Fills the array @a filenames with the names of the files chosen.
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This function should only be used with the dialogs which have @c wxFD_MULTIPLE style,
|
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use GetFilename() for the others.
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|
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Note that under Windows, if the user selects shortcuts, the filenames
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include paths, since the application cannot determine the full path
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of each referenced file by appending the directory containing the shortcuts
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to the filename.
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*/
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virtual void GetFilenames(wxArrayString& filenames) const;
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/**
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Returns the index into the list of filters supplied, optionally, in the
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wildcard parameter.
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Before the dialog is shown, this is the index which will be used when the
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dialog is first displayed.
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After the dialog is shown, this is the index selected by the user.
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*/
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virtual int GetFilterIndex() const;
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/**
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Returns the message that will be displayed on the dialog.
|
||||
*/
|
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virtual wxString GetMessage() const;
|
||||
|
||||
/**
|
||||
Returns the full path (directory and filename) of the selected file.
|
||||
|
||||
@note This function can't be used with dialogs which have the @c wxFD_MULTIPLE style,
|
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use GetPaths() instead.
|
||||
*/
|
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virtual wxString GetPath() const;
|
||||
|
||||
/**
|
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Fills the array @a paths with the full paths of the files chosen.
|
||||
|
||||
This function should only be used with the dialogs which have @c wxFD_MULTIPLE style,
|
||||
use GetPath() for the others.
|
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*/
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virtual void GetPaths(wxArrayString& paths) const;
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/**
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Returns the file dialog wildcard.
|
||||
*/
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virtual wxString GetWildcard() const;
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|
||||
/**
|
||||
Set the hook to be used for customizing the dialog contents.
|
||||
|
||||
This function can be called before calling ShowModal() to specify that
|
||||
the dialog contents should be customized using the provided hook. See
|
||||
wxFileDialogCustomizeHook documentation and @ref page_samples_dialogs
|
||||
for the examples of using it.
|
||||
|
||||
@note In order to define a custom hook object, @c wx/filedlgcustomize.h
|
||||
must be included in addition to the usual @c wx/filedlg.h header.
|
||||
|
||||
@param customizeHook The hook object that will be used by the dialog.
|
||||
This object must remain valid at least until ShowModal() returns.
|
||||
|
||||
@return @true if the hook was successfully set or @false if customizing
|
||||
the file dialog is not supported by the current platform.
|
||||
|
||||
@since 3.1.7
|
||||
*/
|
||||
bool SetCustomizeHook(wxFileDialogCustomizeHook& customizeHook);
|
||||
|
||||
/**
|
||||
Sets the default directory.
|
||||
*/
|
||||
virtual void SetDirectory(const wxString& directory);
|
||||
|
||||
/**
|
||||
The type of function used as an argument for SetExtraControlCreator().
|
||||
|
||||
@since 2.9.0
|
||||
*/
|
||||
typedef wxWindow *(*ExtraControlCreatorFunction)(wxWindow*);
|
||||
|
||||
/**
|
||||
Customize file dialog by adding extra window, which is typically placed
|
||||
below the list of files and above the buttons.
|
||||
|
||||
SetExtraControlCreator() can be called only once, before calling ShowModal().
|
||||
|
||||
The @c creator function should take pointer to parent window (file dialog)
|
||||
and should return a window allocated with operator new.
|
||||
|
||||
@note Using SetExtraControlCreator() in wxMSW forces the use of "old
|
||||
style" (Windows XP-like) file dialogs, instead of the newer
|
||||
(Vista-like) ones and is not recommended for this reason. Prefer to
|
||||
use SetCustomizeHook() instead.
|
||||
|
||||
@since 2.9.0
|
||||
*/
|
||||
bool SetExtraControlCreator(ExtraControlCreatorFunction creator);
|
||||
|
||||
/**
|
||||
Sets the default filename.
|
||||
|
||||
In wxGTK this will have little effect unless a default directory has previously been set.
|
||||
*/
|
||||
virtual void SetFilename(const wxString& setfilename);
|
||||
|
||||
/**
|
||||
Sets the default filter index, starting from zero.
|
||||
*/
|
||||
virtual void SetFilterIndex(int filterIndex);
|
||||
|
||||
/**
|
||||
Sets the message that will be displayed on the dialog.
|
||||
*/
|
||||
virtual void SetMessage(const wxString& message);
|
||||
|
||||
/**
|
||||
Sets the path (the combined directory and filename that will be returned when
|
||||
the dialog is dismissed).
|
||||
*/
|
||||
virtual void SetPath(const wxString& path);
|
||||
|
||||
/**
|
||||
Sets the wildcard, which can contain multiple file types, for example:
|
||||
"BMP files (*.bmp)|*.bmp|GIF files (*.gif)|*.gif".
|
||||
*/
|
||||
virtual void SetWildcard(const wxString& wildCard);
|
||||
|
||||
/**
|
||||
Shows the dialog, returning @c wxID_OK if the user pressed OK, and @c wxID_CANCEL
|
||||
otherwise.
|
||||
*/
|
||||
virtual int ShowModal();
|
||||
};
|
||||
|
||||
|
||||
|
||||
// ============================================================================
|
||||
// Global functions/macros
|
||||
// ============================================================================
|
||||
|
||||
/** @addtogroup group_funcmacro_dialog */
|
||||
///@{
|
||||
|
||||
/**
|
||||
Pops up a file selector box. In Windows, this is the common file selector
|
||||
dialog. In X, this is a file selector box with the same functionality. The
|
||||
path and filename are distinct elements of a full file pathname. If path
|
||||
is empty, the current directory will be used. If filename is empty, no
|
||||
default filename will be supplied. The wildcard determines what files are
|
||||
displayed in the file selector, and file extension supplies a type
|
||||
extension for the required filename. Flags may be a combination of
|
||||
@c wxFD_OPEN, @c wxFD_SAVE, @c wxFD_OVERWRITE_PROMPT or @c wxFD_FILE_MUST_EXIST.
|
||||
|
||||
@note @c wxFD_MULTIPLE can only be used with wxFileDialog and not here since
|
||||
this function only returns a single file name.
|
||||
|
||||
Both the Unix and Windows versions implement a wildcard filter. Typing a
|
||||
filename containing wildcards (*, ?) in the filename text item, and
|
||||
clicking on Ok, will result in only those files matching the pattern being
|
||||
displayed.
|
||||
|
||||
The wildcard may be a specification for multiple types of file with a
|
||||
description for each, such as:
|
||||
|
||||
@code
|
||||
"BMP files (*.bmp)|*.bmp|GIF files (*.gif)|*.gif"
|
||||
@endcode
|
||||
|
||||
The application must check for an empty return value (the user pressed
|
||||
Cancel). For example:
|
||||
|
||||
@code
|
||||
wxString filename = wxFileSelector("Choose a file to open");
|
||||
if ( !filename.empty() )
|
||||
{
|
||||
// work with the file
|
||||
...
|
||||
}
|
||||
//else: cancelled by user
|
||||
@endcode
|
||||
|
||||
@header{wx/filedlg.h}
|
||||
*/
|
||||
wxString wxFileSelector(const wxString& message,
|
||||
const wxString& default_path = wxEmptyString,
|
||||
const wxString& default_filename = wxEmptyString,
|
||||
const wxString& default_extension = wxEmptyString,
|
||||
const wxString& wildcard = wxFileSelectorDefaultWildcardStr,
|
||||
int flags = 0,
|
||||
wxWindow* parent = nullptr,
|
||||
int x = wxDefaultCoord,
|
||||
int y = wxDefaultCoord);
|
||||
|
||||
/**
|
||||
An extended version of wxFileSelector()
|
||||
|
||||
@header{wx/filedlg.h}
|
||||
*/
|
||||
wxString wxFileSelectorEx(const wxString& message = wxFileSelectorPromptStr,
|
||||
const wxString& default_path = wxEmptyString,
|
||||
const wxString& default_filename = wxEmptyString,
|
||||
int *indexDefaultExtension = nullptr,
|
||||
const wxString& wildcard = wxFileSelectorDefaultWildcardStr,
|
||||
int flags = 0,
|
||||
wxWindow *parent = nullptr,
|
||||
int x = wxDefaultCoord,
|
||||
int y = wxDefaultCoord);
|
||||
|
||||
/**
|
||||
Shows a file dialog asking the user for a file name for opening a file.
|
||||
|
||||
The file dialog will have @c wxFD_FILE_MUST_EXIST flag set.
|
||||
|
||||
@see wxFileSelector(), wxFileDialog
|
||||
|
||||
@header{wx/filedlg.h}
|
||||
*/
|
||||
wxString wxLoadFileSelector(const wxString& what,
|
||||
const wxString& extension,
|
||||
const wxString& default_name = wxEmptyString,
|
||||
wxWindow *parent = nullptr);
|
||||
|
||||
/**
|
||||
Shows a file dialog asking the user for a file name for saving a file.
|
||||
|
||||
The file dialog will not have @c wxFD_OVERWRITE_PROMPT flag set.
|
||||
|
||||
@see wxFileSelector(), wxFileDialog
|
||||
|
||||
@header{wx/filedlg.h}
|
||||
*/
|
||||
wxString wxSaveFileSelector(const wxString& what,
|
||||
const wxString& extension,
|
||||
const wxString& default_name = wxEmptyString,
|
||||
wxWindow *parent = nullptr);
|
||||
|
||||
///@}
|
||||
|
||||
Reference in New Issue
Block a user