Graphics.IsVisible Method (Rectangle)
Assembly: System.Drawing (in system.drawing.dll)
public boolean IsVisible ( Rectangle rect )
public function IsVisible ( rect : Rectangle ) : boolean
Not applicable.
Parameters
- rect
Rectangle structure to test for visibility.
Return Value
true if the rectangle specified by the rect parameter is contained within the visible clip region of this Graphics; otherwise, false.The following code example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler. The code performs the following actions:
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Creates a rectangular clipping region and sets it as the clipping region for the graphics object of the form usingReplace.
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Creates the location and size of two rectangles, one inside the clipping region and one outside.
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Tests each of the rectangles for visibility and draws only the visible one.
The result is one small red rectangle, which is within the clip region.
Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.