imaqGetWindowZoom
From NI Vision for LabWindows/CVI Function
imaqGetWindowZoom
Usage
int imaqGetWindowZoom(int windowNumber, int* xZoom, int* yZoom);
Purpose
Retrieves 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Note This function is obsolete.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 imaqGetWindowZoom2(). |
Parameters
|
Name
|
Type
|
Description
|
|---|---|---|
| windowNumber | int | The window number of the image window. |
| xZoom | int* | On return, the current zoom factor in the x direction for the window. |
| yZoom | int* | On return, the current zoom factor in the y direction for the window. |
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(). |