ImageGear for C and C++ on Windows v19.4 - Updated
IG_GUI_thumbnail_mouse_CB_register
API Reference Guide > Core Component API Reference > Core Component Functions Reference > GUI Functions > GUI Thumbnail Functions > IG_GUI_thumbnail_mouse_CB_register

Call this function to register a callback function that is to be called whenever a thumbnail is selected in thumbnail windowhWndThumbnail.

Declaration:

 
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AT_ERRCOUNT ACCUAPI IG_GUI_thumbnail_mouse_CB_register (
        HWND hWndThumbnail,
        LPFNIG_GUITHUMBMOUSE lpfnThumbMouse, 
        LPVOID lpPrivate
);

Arguments:

Name Type Description
hWndThumbnail HWND Windows handle to the Thumbnail window.
lpfnThumbMouse LPFNIG_GUITHUMBMOUSE A pointer to the callback function that you are registering to be called whenever a thumbnail is selected using a mouse click.
lpPrivateData LPVOID A far pointer to any private data to which you want to pass 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.

Sample:

None

Remarks:

See the description for the callback type LPFNIG_GUITHUMBMOUSE for more information.