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CImageView:SetCursorExtent
The SetCursorExtent method sets the extent of the image cursor in the CImageView. This differs from SetCursorRect in the argument list.
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bResult = CImageView:SetCursorExtent( xmin, xmax, ymin, ymax ) |
Thexmin, xmax,ymin, and ymax values
specify the cursor bounds, measured in pixel coordinates.
On success, the
method returns true.
On failure,
false is
returned.
Assume that a CImageView object named V exists and wraps an image window. The following script fragment sets the image cursor to an x-range of 50:150 and a y-range of 100:300. Notice that both values returned by R:Size() can be printed since it is the last parameter in the Printf argument list:
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V:SetCursorExtent(50,150,100,300) |
-- set the image cursor |
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R = V:GetCursorRect() |
-- fetch the image cursor rectangle |
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Printf("W=%lg, H=%lg", R:Size()) |
-- Result: W=100, H=200 |
CImageView , GetCursorRect , SetCursorRect , SetCursorWidth , SetCursorHeight