This function returns the group ID of the specified magnify window.
Declaration:
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AT_ERRCOUNT ACCUAPI IG_GUI_magnify_GrpID_get(
HWND hwndMag,
DWORD* pdwGrpID
);
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Arguments:
| Name | Type | Description |
| HwndMag | HWND | Handle to magnify the window. |
| PdwGrpID | DWORD* | Pointer to where the magnify window group ID is to be received. |
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
Example:
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/* Updating magnify window with new gamma correction:?*/
DWORD dwGrpID;
IG_GUI_magnify_GrpID_get(hwndMag, &dwGrpID);
IG_dspl_gamma_correction_set(hIGear, dwGrpID, IG_DSPL_ALL_CHANNELS, 1.0, 1.0, 1.0);
InvalidateRect(hwndMag, NULL, FALSE);
UpdateWindow(m_hwndMag);
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Remarks:
This value can be used for magnify window display attribute corrections.