LPFNIG_GUIPAGESELECTPROC

This callback function gets called every time a page icon is selected (mouse-clicked over) by the user from the page sorter window.

Declaration:

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typedef VOID (ACCUAPI LPFNIG_GUIPAGESELECTPROC)( LPVOID lpPrivate, HWND hwndPage, HIGEAR hIGear, UINT nPageNumber );

Arguments:

Name	Type	Description
lpPrivate	LPVOID	A far pointer to private data that is being pass into the callback.
hwndPage	HWND	Windows handle to the GUI page sorter window.
hIGear	HIGEAR	HIGEAR handle to the image.
nPageNumber	UINT	The page number of the currently selected page icon.

Return Value:

None

Supported Raster Image Formats:

All pixel formats supported by ImageGear for C and C++.

Sample:

Page

Example:

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HIGEAR hIGear; /* HIGEAR handle of image / HWND hwndPage; / Windows handle to the page sorter window / LPFNIG_GUIPAGESELECTPROC PageSelectProc; / Callback for icon selection/ IG_GUI_page_select_CB_register(hwndPage, PageSelectProc, NULL); /*************************************************************************/ / Called when a page is selected / /*************************************************************************/ VOID ACCUAPI PageSelectProc( LPVOID lpPrivateData, HWND hwndPage, HIGEAR hIGearPage, UINT nPage ) { CHAR szBuf[_MAX_PATH + 32]; hwndPage, lpPrivateData; hIGear = hIGearPage; nCurrentPage = nPage; / change the title of the main window to reflect a page change */ wsprintf(szBuf, "%s Page: %d", (LPVOID)szFile, nPage); SetWindowText(hWndMain, szBuf); IG_dspl_dithering_set(hIGear, IG_GRP_DEFAULT, IG_DSPL_DITHER_FIXED_PALETTE); InvalidateRect(hWndMain, NULL, FALSE); UpdateWindow(hWndMain); }

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HIGEAR hIGear;    /* HIGEAR handle of image  */
HWND hwndPage;   /* Windows handle to the page sorter window    */
LPFNIG_GUIPAGESELECTPROC PageSelectProc; /* Callback for icon selection*/
IG_GUI_page_select_CB_register(hwndPage, PageSelectProc, NULL);
/***************************************************************************/
/* Called when a page is selected                                          */
/***************************************************************************/
VOID ACCUAPI PageSelectProc(
   LPVOID   lpPrivateData,
   HWND     hwndPage,
   HIGEAR   hIGearPage,
   UINT     nPage
   )
{
   CHAR     szBuf[_MAX_PATH + 32];
   hwndPage, lpPrivateData;
   hIGear = hIGearPage;
   nCurrentPage = nPage;
   /* change the title of the main window to reflect a page change */
   wsprintf(szBuf, "%s Page:  %d", (LPVOID)szFile, nPage);
   SetWindowText(hWndMain, szBuf);
   IG_dspl_dithering_set(hIGear, IG_GRP_DEFAULT, IG_DSPL_DITHER_FIXED_PALETTE);
   InvalidateRect(hWndMain, NULL, FALSE);
   UpdateWindow(hWndMain);
}

Remarks:

This callback must first be registered by calling IG_GUI_page_select_CB_register().