ImageGear for C and C++ on Windows v19.9 - Updated
IG_GUI_pan_CB_register
Call this function to register a callback function that is to be called after a Pan window is updated.
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AT_ERRCOUNT ACCUAPI IG_GUI_pan_CB_register (
HWND hWndPan,
LPFNIG_GUIPANUPDATE lpfnPanUpdate,
LPVOID lpPrivate
);
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| Name | Type | Description |
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| hWndPan | HWND | A windows handle to the Pan window. |
| lpfnPanUpdate | LPFNIG_GUIPANUPDATE | A pointer to the callback function called whenever a pan window is updated. |
| lpPrivateData | LPVOID | A far pointer to any private data that you want to pass to the callback. |
Returns the number of ImageGear errors that occurred during this function call.
This function does not process image pixels.
None
See the example for the LPFNIG_GUIPANUPDATE callback function.