TImageEnView.UpdateRect

Declaration

procedure UpdateRect(rclip: TRect; UpdateNow: Boolean = false);

Description

Updates the specified rectangle. Use this function instead of Update when only a portion of the image has changed.
If UpdateNow is True then the window is updated immediately (bypassing the application queue).

Example

// we assume that Zoom = 100
ImageEnView1.IEBitmap.Canvas.Fill(0, 0, 10, 10);
ImageEnView1.UpdateRect(rect(0, 0, 10, 10));

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