Layout-Resize-OnLoad

[John]

Hi,
This is my first experiment with C#, I'm trying to handle the resize
event. According to the documentation I should handle the Layout event
for this. My question is: how do I register this event? The following
code does not work because I never recieve the OnLoad event. What am I
doing wrong?

public class frmMain : System.Windows.Forms.Form
{
protected virtual void OnLoad(EventArgs e)
{
frmMain.ActiveForm.Layout += new
System.Windows.Forms.LayoutEventHandler(this.frmMa in_Layout);
}

private void frmMain_Layout(object sender,
System.Windows.Forms.LayoutEventArgs e)
{
splMain.Left = pgTasks.Left + pgTasks.Width;
splMain.Height = this.Height;
}
}

Another question, while I'm here, the line:

frmMain.ActiveForm.Layout += new
System.Windows.Forms.LayoutEventHandler(this.frmMa in_Layout);

does not make sense to me. I would think that the line should be:

this.ActiveForm.Layout += new
System.Windows.Forms.LayoutEventHandler(this.frmMa in_Layout);

replacing 'frmMain' with 'this' but the 'this' object reference has a
very different set of intellisense attributes, of which ActiveForm is
not one of them.

Thanks

[John]

John wrote:

protected virtual void OnLoad(EventArgs e)
{
frmMain.ActiveForm.Layout += new
System.Windows.Forms.LayoutEventHandler(this.frmMa in_Layout);
}

Sorry for the, somewhat, quick post, replacing 'virtual' with 'override'
solves the OnLoad problem, but it still doesn't solve the original
question: How do I register the LayoutEventHandler?

Registering in the OnLoad event is incorrect because ActiveForm is null
at that point.

Thanks

[Daniel O'Connell]

I take it you are coming from VB6?

frmMain.ActiveForm is a static member, and is not what you should be doing.
Instead
this.Layout + = new
System.Windows.Forms.LayoutEventHandle(this.frmMai n_Layout);
should work.
Also, you could simply override OnLayout in your form class, just make sure
you call base.OnLayout.
"John" <john@no_spam> wrote in message
news:%2****************@TK2MSFTNGP09.phx.gbl...

John wrote:

protected virtual void OnLoad(EventArgs e)
{
frmMain.ActiveForm.Layout += new
System.Windows.Forms.LayoutEventHandler(this.frmMa in_Layout);
}

Sorry for the, somewhat, quick post, replacing 'virtual' with 'override'
solves the OnLoad problem, but it still doesn't solve the original
question: How do I register the LayoutEventHandler?

Registering in the OnLoad event is incorrect because ActiveForm is null
at that point.

Thanks

[Jay B. Harlow [MVP - Outlook]]

John,
Just like you can override the OnLoad method to handle the Load event, you
can override the OnLayout method to handle the Layout event. In both cases
remember to call your base.OnLoad or base.OnLayout method.

Overriding the method is more efficient than handling the event for the
current class.

http://msdn.microsoft.com/library/de...ayoutTopic.asp

Hope this helps
Jay

"John" <john@no_spam> wrote in message
news:uA**************@TK2MSFTNGP10.phx.gbl...

Hi,
This is my first experiment with C#, I'm trying to handle the resize
event. According to the documentation I should handle the Layout event
for this. My question is: how do I register this event? The following
code does not work because I never recieve the OnLoad event. What am I
doing wrong?

public class frmMain : System.Windows.Forms.Form
{
protected virtual void OnLoad(EventArgs e)
{
frmMain.ActiveForm.Layout += new
System.Windows.Forms.LayoutEventHandler(this.frmMa in_Layout);
}

private void frmMain_Layout(object sender,
System.Windows.Forms.LayoutEventArgs e)
{
splMain.Left = pgTasks.Left + pgTasks.Width;
splMain.Height = this.Height;
}
}

Another question, while I'm here, the line:

frmMain.ActiveForm.Layout += new
System.Windows.Forms.LayoutEventHandler(this.frmMa in_Layout);

does not make sense to me. I would think that the line should be:

this.ActiveForm.Layout += new
System.Windows.Forms.LayoutEventHandler(this.frmMa in_Layout);

replacing 'frmMain' with 'this' but the 'this' object reference has a
very different set of intellisense attributes, of which ActiveForm is
not one of them.

Thanks