IG_dspl_zoom

This function returns the current zoom values.

Declaration:

	Copy Code
AT_ERRCOUNT ACCUAPI IG_dspl_zoom_get( [IN] HIGEAR hIGear, [IN] DWORD dwGrpID, [IN] HWND hWnd, [OUT] LPAT_MODE lpnZoomMode, [OUT] LPDOUBLE lpdblHZoom, [OUT] LPDOUBLE lpdblVZoom );

Arguments:

Name	Type	Description
hIGear	HIGEAR	ImageGear handle of image.
dwGrpID	DWORD	Identifier of the group from which to obtain zoom parameters.
hWnd	HWND	Pointer to NSView or NSScrollView object where image is drawn. Pointer must be casted to non-retainable HWND type with (__bridge HWND) operator.
lpnZoomMode	LPAT_MODE	Pointer to where ZoomMode is to be received. If NULL, then this parameter is ignored.
lpdblHZoom	LPDOUBLE	Where to return the calculated horizontal zoom value. This value is always calculated whether or not the horizontal zoom is fixed.
lpdblVZoom	LPDOUBLE	Where to return the calculated vertical zoom value. This value is always calculated whether or not the vertical zoom is fixed.

Return Value:

Returns the number of ImageGear errors that occurred during this function call.

Supported Raster Image Formats:

All pixel formats supported by ImageGear Professional.

Example:

	Copy Code
NSView* nsView = self; HIGEAR hIGear; /* HIGEAR handle of image / DWORD nGrpID; / display group identifier / AT_MODE nZoomMode; / zoom mode / DOUBLE dHZoom; / horizontal zoom value / DOUBLE dVZoom; / vertical zoom value */ ... IG_dspl_zoom_get( hIGear, nGrpID, (__bridge HWND)nsView, &nZoomMode, &dHZoom, &dVZoom ); ...

Copy Code

NSView* nsView = self;
HIGEAR hIGear; /* HIGEAR handle of image */
DWORD nGrpID; /* display group identifier */
AT_MODE nZoomMode; /* zoom mode */
DOUBLE dHZoom; /* horizontal zoom value */
DOUBLE dVZoom; /* vertical zoom value */
...
IG_dspl_zoom_get( hIGear, nGrpID, (__bridge HWND)nsView, &nZoomMode, &dHZoom, &dVZoom );
...