I am facing a problem with my GDI++ code in C# control.
Though i have tried many things from last 6 months, i am not able to
get completely rid of this bug.
Whenever the user is opening a window or closing a window, i'm getting
following exception.
This is a very rare exception but it causes the whole application
crash
and has become a nigtmare for me.
This problem is more frequent on Citrix client as compared to normal
desktop environment.
InnnerException : Invalid parameter used.
Stack Trace: at System.Drawing. Region.GetHrgn( Graphics g)
at System.Windows. Forms.Control.G etHRgn(Region region)
at System.Windows. Forms.Control.O nHandleCreated( EventArgs e)
at System.Windows. Forms.Control.W mCreate(Message & m)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.ButtonBas e.WndProc(Messa ge& m)
at System.Windows. Forms.Button.Wn dProc(Message& m)
at System.Windows. Forms.ControlNa tiveWindow.OnMe ssage(Message& m)
at System.Windows. Forms.ControlNa tiveWindow.WndP roc(Message& m)
at System.Windows. Forms.NativeWin dow.Callback(In tPtr hWnd, Int32
msg, IntPtr wparam, IntPtr lparam)
Source: System.Drawing
I have done following coding in a control which is derived from
System.Windows. Forms.Button
protected override void OnPaint(PaintEv entArgs e)
{
if(this != null)
{
if(!this.IsDisp osed && !this.Disposing )
{
using(GraphicsP ath path = new
GraphicsPath(Fi llMode.Alternat e))
{
path.AddEllipse (0, 0, this.Width, this.Height);
using(Region rgn = new Region(path).Cl one())
{
ctrl.Region=rgn .Clone();
}
}
}
}
}
I'll appriciate if you can provide some help.
2  2120 
You posted this to at least the following newsgroups:
microsoft.publi c.dotnet.framew ork
microsoft.publi c.dotnet.genera l
microsoft.publi c.dotnet.langua ges.csharp
microsoft.publi c.dotnet.langua ges.vb
but not to
microsoft.publi c.dotnet.framew ork.drawing.
When you post a message to multiple groups, please post all of
them at once. That way, if someone in one group provides a
solution, the solution will be posted to all of the groups.
Also, if someone in another group is working on a solution,
they will know it has been solved, and they can work on helping
somebody else.
Also please do not post to newsgroups that are not pertinent,
like in this case, the VB newsgroups, when you have a C# issue.
Robin S.
-------------------------------------------
"JayvardhanPune " <ja************ **@tietoenator. inwrote in message
news:11******** **************@ p10g2000cwp.goo glegroups.com.. .
>I am facing a problem with my GDI++ code in C# control.
Though i have tried many things from last 6 months, i am not able to
get completely rid of this bug.
Whenever the user is opening a window or closing a window, i'm getting
following exception.
This is a very rare exception but it causes the whole application
crash
and has become a nigtmare for me.
This problem is more frequent on Citrix client as compared to normal
desktop environment.
InnnerException : Invalid parameter used.
Stack Trace: at System.Drawing. Region.GetHrgn( Graphics g)
at System.Windows. Forms.Control.G etHRgn(Region region)
at System.Windows. Forms.Control.O nHandleCreated( EventArgs e)
at System.Windows. Forms.Control.W mCreate(Message & m)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.ButtonBas e.WndProc(Messa ge& m)
at System.Windows. Forms.Button.Wn dProc(Message& m)
at System.Windows. Forms.ControlNa tiveWindow.OnMe ssage(Message& m)
at System.Windows. Forms.ControlNa tiveWindow.WndP roc(Message& m)
at System.Windows. Forms.NativeWin dow.Callback(In tPtr hWnd, Int32
msg, IntPtr wparam, IntPtr lparam)
Source: System.Drawing
I have done following coding in a control which is derived from
System.Windows. Forms.Button
protected override void OnPaint(PaintEv entArgs e)
{
if(this != null)
{
if(!this.IsDisp osed && !this.Disposing )
{
using(GraphicsP ath path = new
GraphicsPath(Fi llMode.Alternat e))
{
path.AddEllipse (0, 0, this.Width, this.Height);
using(Region rgn = new Region(path).Cl one())
{
ctrl.Region=rgn .Clone();
}
}
}
}
}
I'll appriciate if you can provide some help.
"JayvardhanPune " <ja************ **@tietoenator. inwrote in message
news:11******** **************@ p10g2000cwp.goo glegroups.com.. .
>I am facing a problem with my GDI++ code in C# control.
Though i have tried many things from last 6 months, i am not able to
get completely rid of this bug.
Whenever the user is opening a window or closing a window, i'm getting
following exception.
This is a very rare exception but it causes the whole application
crash
and has become a nigtmare for me.
This problem is more frequent on Citrix client as compared to normal
desktop environment.
InnnerException : Invalid parameter used.
Stack Trace: at System.Drawing. Region.GetHrgn( Graphics g)
at System.Windows. Forms.Control.G etHRgn(Region region)
at System.Windows. Forms.Control.O nHandleCreated( EventArgs e)
at System.Windows. Forms.Control.W mCreate(Message & m)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.ButtonBas e.WndProc(Messa ge& m)
at System.Windows. Forms.Button.Wn dProc(Message& m)
at System.Windows. Forms.ControlNa tiveWindow.OnMe ssage(Message& m)
at System.Windows. Forms.ControlNa tiveWindow.WndP roc(Message& m)
at System.Windows. Forms.NativeWin dow.Callback(In tPtr hWnd, Int32
msg, IntPtr wparam, IntPtr lparam)
Source: System.Drawing
I have done following coding in a control which is derived from
System.Windows. Forms.Button
protected override void OnPaint(PaintEv entArgs e)
{
if(this != null)
{
if(!this.IsDisp osed && !this.Disposing )
{
using(GraphicsP ath path = new
GraphicsPath(Fi llMode.Alternat e))
{
path.AddEllipse (0, 0, this.Width, this.Height);
using(Region rgn = new Region(path).Cl one())
{
ctrl.Region=rgn .Clone();
}
}
}
}
}
This is just a guess but throw in a check that this.Width and this.Height
are both not zero.
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