ImageGear Professional v18.2 > API Reference Guide > Core Component API Reference > Core Component Callback Functions Reference > LPFNIG_GUITHUMBLOAD |
This function is called when the user loads a thumbnail in the window hwndThumbnail.
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typedef AT_BOOL (LPACCUAPI LPFNIG_GUITHUMBLOAD)(
LPVOID lpPrivate,
HWND hwndThumbnail,
const LPSTR lpszFileName
);
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Name | Type | Description |
lpPrivate | LPVOID | Private data passed. |
hwndThumbnail | HWND | Thumbnail window handle. |
lpszFileName | const LPSTR | File name of the thumbnail. |
None
This function does not process image pixels.
None
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/* CB function*/ AT_BOOL MyLoadCB(LPVOID lpPrivate, HWND hwndThumbnail, const LPSTR lpszFileName) { /* just a test */ MessageBox(hwndThumbnail, (LPCTSTR) lpszFileName, "Thumbnail file Name", MB_OK); return TRUE; } ... ?/* register Load CB */ IG_GUI_thumbnail_load_CB_register(hwndThumbnail, MyLoadCB, NULL); |
This type of callback function is registered by a call to the IG_GUI_thumbnail_load_CB_register() function.