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dev_open_file_dialogdev_open_file_dialogDevOpenFileDialogDevOpenFileDialog (Operator)


dev_open_file_dialogdev_open_file_dialogDevOpenFileDialogDevOpenFileDialog — Opens a file selection dialog.


dev_open_file_dialog( : : Filter, Mode, Path : Selection)

Herror dev_open_file_dialog(const char* Filter, const char* Mode, const char* Path, char* Selection)

Herror T_dev_open_file_dialog(const Htuple Filter, const Htuple Mode, const Htuple Path, Htuple* Selection)

void DevOpenFileDialog(const HTuple& Filter, const HTuple& Mode, const HTuple& Path, HTuple* Selection)

static void HOperatorSet.DevOpenFileDialog(HTuple filter, HTuple mode, HTuple path, out HTuple selection)


dev_open_file_dialogdev_open_file_dialogDevOpenFileDialogDevOpenFileDialogDevOpenFileDialog opens a file selection dialog for reading one file (ModeModeModeModemode = 'read'"read""read""read""read"), reading one or more files (ModeModeModeModemode = 'read_multi'"read_multi""read_multi""read_multi""read_multi"), writing (ModeModeModeModemode = 'write'"write""write""write""write") a file or choosing (ModeModeModeModemode = 'dir'"dir""dir""dir""dir") a directory. If ModeModeModeModemode is set to 'default'"default""default""default""default" and FilterFilterFilterFilterfilter is set to an HALCON operator the type is set to the value the operator would use.

The FilterFilterFilterFilterfilter can be used to select the types of the files which shall be selected for reading or writing. The FilterFilterFilterFilterfilter can be set to an HALCON operator, for example read_imageread_imageReadImageReadImageReadImage, which should read or write the selected file. In that case, the filter is set appropriate to the files used by the HALCON operator. To select images of type JPEG and TIFF the filter could be set to 'Images (*.jpg *.tif *.tiff)'"Images (*.jpg *.tif *.tiff)""Images (*.jpg *.tif *.tiff)""Images (*.jpg *.tif *.tiff)""Images (*.jpg *.tif *.tiff)" or 'JPEG Files (*.jpg);;TIFF-Files (*.tif *.tiff)'"JPEG Files (*.jpg);;TIFF-Files (*.tif *.tiff)""JPEG Files (*.jpg);;TIFF-Files (*.tif *.tiff)""JPEG Files (*.jpg);;TIFF-Files (*.tif *.tiff)""JPEG Files (*.jpg);;TIFF-Files (*.tif *.tiff)". In the first case, by selecting the entry 'Images' all supported images files are displayed together. In the second case it is possible to choose between JPEG Files or TIFF Files. The Filter is not case sensitive, therefore the same results are supplied by 'JPEG Files (*.jpg)'"JPEG Files (*.jpg)""JPEG Files (*.jpg)""JPEG Files (*.jpg)""JPEG Files (*.jpg)" and 'JPEG Files (*.JPG)'"JPEG Files (*.JPG)""JPEG Files (*.JPG)""JPEG Files (*.JPG)""JPEG Files (*.JPG)". The 'All Files (*)'"All Files (*)""All Files (*)""All Files (*)""All Files (*)" is always added. To combine more than one filter you have to separate them by ';;'";;"";;"";;"";;".


The filter 'Images (*.jpg *.tiff *.tif)'"Images (*.jpg *.tiff *.tif)""Images (*.jpg *.tiff *.tif)""Images (*.jpg *.tiff *.tif)""Images (*.jpg *.tiff *.tif)" lists all files with the extensions jpg,tiff und tif.

The filter 'JPEG Files (*.jpg)'"JPEG Files (*.jpg)""JPEG Files (*.jpg)""JPEG Files (*.jpg)""JPEG Files (*.jpg)" lists all files with the extension jpg

Combination of 3 filters: 'Images (*.jpg *.tiff *.tif);;JPEG Files (*.jpg);;TIFF Files (*.tiff *.tif)'"Images (*.jpg *.tiff *.tif);;JPEG Files (*.jpg);;TIFF Files (*.tiff *.tif)""Images (*.jpg *.tiff *.tif);;JPEG Files (*.jpg);;TIFF Files (*.tiff *.tif)""Images (*.jpg *.tiff *.tif);;JPEG Files (*.jpg);;TIFF Files (*.tiff *.tif)""Images (*.jpg *.tiff *.tif);;JPEG Files (*.jpg);;TIFF Files (*.tiff *.tif)"

The PathPathPathPathpath can be used to set the working directory. If PathPathPathPathpath is set to 'default'"default""default""default""default" the working directory is set to the last one used for this type of ModeModeModeModemode.

After a successful execution the SelectionSelectionSelectionSelectionselection contains the selected files or file.


This operator is not supported for code export.


FilterFilterFilterFilterfilter (input_control)  string HTupleHTupleHtuple (string) (string) (HString) (char*)

Type of file or files to select.

ModeModeModeModemode (input_control)  string HTupleHTupleHtuple (string) (string) (HString) (char*)

Mode of the file selection dialog.

Default value: 'default' "default" "default" "default" "default"

List of values: 'default'"default""default""default""default", 'dir'"dir""dir""dir""dir", 'read'"read""read""read""read", 'read_multi'"read_multi""read_multi""read_multi""read_multi", 'write'"write""write""write""write"

PathPathPathPathpath (input_control)  string HTupleHTupleHtuple (string) (string) (HString) (char*)

Working directory.

Default value: 'default' "default" "default" "default" "default"

SelectionSelectionSelectionSelectionselection (output_control)  string(-array) HTupleHTupleHtuple (string) (string) (HString) (char*)

Selected file names.

Default value: 'default' "default" "default" "default" "default"

Example (HDevelop)

dev_open_file_dialog ('read_image', 'default','c:/',Selection)
read_image(ToolId, Selection)


If the values of the specified parameters are correct, dev_open_file_dialogdev_open_file_dialogDevOpenFileDialogDevOpenFileDialogDevOpenFileDialog returns 2 (H_MSG_TRUE). Otherwise an exception is raised and an error code returned.



See also




ClassesClasses | | Operators