imaqZoomWindow

Usage

int imaqZoomWindow(int windowNumber, int xZoom, int yZoom, Point center);

Purpose

Sets the current zoom factors for a given image window. The zoom factor indicates an increase or decrease in the magnification of an image. A positive number indicates a magnification by the amount specified. For example, a zoom factor of 3 indicates that the image is displayed at three times its actual size (3:1). A negative number indicates that the image is decreased in magnification by the specified amount. For example, a zoom factor of –5 indicates that the image is displayed at one-fifth its actual size (1:5).

Note   This function is obsolete. The replacement function is imaqZoomWindow2().

Parameters

Name	Type	Description
windowNumber	int	The window number of the image window.
xZoom	int	The zoom factor for the x direction. Set xZoom to zero to maintain the current zoom factor for the x direction.
yZoom	int	The zoom factor for the y direction. Set yZoom to zero to maintain the current zoom factor for the y direction.
center	Point	The center point around which to zoom. Set this parameter to IMAQ_NO_POINT to maintain the current center point.

Return Value

Type	Description
int	On success, this function returns a non-zero value. On failure, this function returns 0. To get extended error information, call imaqGetLastError().