| Operators |
dev_open_file_dialog — Opens a file selection dialog.
dev_open_file_dialog opens a file selection dialog for reading one file (Mode = 'read'), reading one or more files (Mode = 'read_multi'), writing (Mode = 'write') a file or choosing (Mode = 'dir') a directory. If Mode is set to 'default' and Filter is set to an HALCON operator the type is set to the value the operator would use.
The Filter can be used to select the types of the files which shall be selected for reading or writing. The Filter can be set to an HALCON operator, for example read_image, 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)' or '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)' and 'JPEG Files (*.JPG)'. The 'All Files (*)' is always added. To combine more than one filter you have to separate them by ';;'.
Examples:
The filter 'Images (*.jpg *.tiff *.tif)' lists all files with the extensions jpg,tiff und tif.
The filter '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)'
The Path can be used to set the working directory. If Path is set to 'default' the working directory is set to the last one used for this type of Mode.
After a successful execution the Selection contains the selected files or file.
This operator is not supported for code export.
Type of file or files to select.
Mode of the file selection dialog.
Default value: 'default'
List of values: 'default', 'dir', 'read', 'read_multi', 'write'
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_dialog returns 2 (H_MSG_TRUE). Otherwise an exception is raised and an error code returned.
Foundation
| Operators |