[Mono-bugs] [Bug 80451][Nor] New - Transparent control is not displayed properly

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Changed by georgegiolfan at yahoo.com.

http://bugzilla.ximian.com/show_bug.cgi?id=80451

--- shadow/80451	2007-01-04 15:43:35.000000000 -0500
+++ shadow/80451.tmp.30989	2007-01-04 15:43:35.000000000 -0500
@@ -0,0 +1,53 @@
+Bug#: 80451
+Product: Mono: Class Libraries
+Version: 1.2
+OS: other
+OS Details: 
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: Windows.Forms
+AssignedTo: toshok at ximian.com                            
+ReportedBy: georgegiolfan at yahoo.com               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: Transparent control is not displayed properly
+
+Description of Problem:
+A Control with the style SupportsTransparentBackColor set to true and 
+BackColor set to Color.Transparent is not displayed properly.
+
+Steps to reproduce the problem:
+1. Compile and run the following program.
+using System;
+using System.Drawing;
+using System.Windows.Forms;
+class TestForm : Form {
+    static void Main() {
+        Application.Run(new TestForm());
+    }
+    public TestForm() {
+        BackgroundImage = Icon.ToBitmap();
+        TransparentControl c = new TransparentControl();
+        c.BackColor = Color.Transparent;
+        c.Width = 100;
+        c.Dock = DockStyle.Right;
+        Controls.Add(c);
+    }
+    protected override void OnClick(EventArgs e) {
+        base.OnClick(e);
+        BackgroundImage = null;
+    }
+    class TransparentControl : Control {
+        public TransparentControl() {
+            SetStyle(ControlStyles.SupportsTransparentBackColor, true);
+        }
+    }
+}
+2. Resize the form so that its width changes and see or click on it.
+
+How often does this happen? 
+Always (on SVN version).