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).
Parameters
Name
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Type
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Description
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windowNumber
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int
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The window number of the image window.
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xZoom
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int
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The zoom factor for the x direction. Set xZoom to zero to maintain the current zoom factor for the x direction.
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yZoom
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int
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The zoom factor for the y direction. Set yZoom to zero to maintain the current zoom factor for the y direction.
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center
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Point
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The center point around which to zoom. Set this parameter to IMAQ_NO_POINT to maintain the current center point.
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Return Value
Type
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Description
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|
int |
On success, this function returns a non-zero value. On failure, this function returns 0. To get extended error information, call imaqGetLastError().
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