SelectionRectangle Example VC++

This example draws a selection rectangle on an image and zooms in on the area bound by the rectangle.

void CImgEdit1Dlg::OnZoomto() 
{
    // This would draw a rectangle on an image and would
    // zoom in on the area bound by the rectangle
  
    // Enable rectangle drawing
    ImgEdit1.SetSelectionRectangle(TRUE);
    // Draw rectangle
    ImgEdit1.DrawSelectionRect( 150, 200, 400, 400);
    ImgEdit1.ZoomToSelection();
}