Call this function to register a callback function that is to be called whenever a thumbnail is selected in thumbnail window hWndThumbnail.
Declaration:
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AT_ERRCOUNT ACCUAPI IG_GUI_thumbnail_CB_register (
HWND hWndThumbnail,
LPFNIG_GUITHUMBSELECT lpfnThumbSelect,
LPVOID lpPrivate
);
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Arguments:
| Name | Type | Description |
| hWndThumbnail | HWND | Windows handle to the Thumbnail window. |
| lpfnThumbSelect | LPFNIG_GUITHUMBSELECT | A pointer to the callback function that you are registering, to be called whenever a thumbnail is selected. |
| lpPrivateData | LPVOID | A far pointer to any private data to which you want to pass to the callback. |
Return Value:
Returns the number of ImageGear errors that occurred during this function call.
Supported Raster Image Formats:
This function does not process image pixels.
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The callback used with this function correctly reports color space and bit depth for these pixel formats only: Indexed RGB – 1, 4, 8 bpp; |
Sample:
Thumbnail, Display, FlashPix
Example:
For an example showing the use of this and other IG_GUI_Thumbnail functions and callbacks, see the Thumbnail sample application.
Remarks:
See also the description for callback type LPFNIG_GUITHUMBSELECT.