如何使MDIChild透明？

Question

I'd successfully made a normal Form Transparent by handling the OPACITY property.

Now, I want to make an MDIChild (loaded in an MDIParent) transparent. Is that possible? I'd applied the same technique (mentioned above) for the MDIChild. But, was unsucessful.

Is it possible to make the MDIChild tranparent. Does anyone had done that before?

Any hekp will be appreciated. Thanks.

Answer 1

否。MDI子窗体不支持透明度。

Answer 2

You May try assigning the mdiparent to a form variable, set the mdichild's mdiparent property to null and then apply your technique to make it transparent . i dont know if it would work

Answer 3

You can use Region property.

this.Region = this.CreateNewRegion();
// ...
private Region CreateNewRegion() {
   var points = new Point[] { new Point(0,0), new Point(20,0), new Point(30, 50) };
   var path = new System.Drawing.Drawing2D.GraphicPath();
   path.AddPolygon( points );
   var region = new Region( path );
   return region;
}