HWND hWnd;

/* handle to a window */

pBITMAPHANDLE pBitmap;

/* pointer to the bitmap handle */

L_BOOL bUpdateBitmap;

/* flag that indicates whether to update the magnifying glass source bitmap */

Parameter

Description

hWnd

Handle of the window to which the magnifying glass is attached.

pBitmap

Pointer to the bitmap handle that references the new bitmap that the magnifying glass will display the zoomed area.

bUpdateBitmap

Flag that indicates whether to update the magnifying glass source bitmap. Possible values are:

Value

Meaning

TRUE

Update the magnifying glass displayed bitmap with the parts of pBitmap while moving the magnifying glass over the displayed bitmap.

FALSE

Don’t update the magnifying glass displayed bitmap with the parts of pBitmap while moving the magnifying glass over the displayed bitmap.

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Note:

This function can be used only if the MAGGLASS_MANUAL_UPDATE flag was set when calling L_StartMagGlass function.

LTDIS

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Functions:

L_StartMagGlass, L_StopMagGlass, L_ShowMagGlass, L_SetMagGlassPos, L_CreateZoomView, L_GetZoomViewProps, L_UpdateZoomView, L_DestroyZoomView, L_GetZoomViewsCount, L_WindowHasZoomView, ZOOMVIEWPROPS

Topics:

Using the Magnifying Glass

Raster Image Functions: Displaying Images

Using the Zoom View