Extending ButtonTool in MDI Child

Sam posted over 15 years ago

I am trying to extend the ButtonTool in my winforms mdi child form however, I keep getting a Key not found error? This only happens when I extend the ButtonTool. If I do not extend the ButtonTool then things work as expected. I am attempting to implement a command pattern with the IG toolbars etc. however, it is proving to be MUCH more of a headache than I expected. Can someone please help?

<code>

// ButtonTool btool = new ButtonTool("Test button"); // this will work...

MyButton btool = new MyButton ("test"); // this will throw an exception when the child form is launched WTF? btool.SharedProps.DisplayStyle = ToolDisplayStyle.ImageAndText;

btool.SharedProps.Caption = "Test button";

toolMgr.Tools.Add(btool);

toolMgr.Toolbars["UltraToolbar1"].Tools.AddTool("Test button",false);

toolMgr.ToolClick += new ToolClickEventHandler(ToolbarsManager_ToolClick);

...

</code>

this is the error I receive when the child form loads...

ystem.ArgumentException: Key not found
Parameter name: key
   at Infragistics.Shared.KeyedSubObjectsCollectionBase.GetItem(String key)
   at Infragistics.Win.UltraWinToolbars.ToolsCollectionBase.get_Item(String key)
   at Infragistics.Win.UltraWinToolbars.ToolBase.InternalSetUnderlyingTool(ToolBase underlyingMdiChildTool)
   at Infragistics.Win.UltraWinToolbars.ToolsCollectionBase.MergeMdiChildTools(ToolsCollection childToolsCollection)
   at Infragistics.Win.UltraWinToolbars.UltraToolbarsManager.MergeMdiChildToolbarTools()
   at Infragistics.Win.UltraWinToolbars.UltraToolbarsManager.MergeMdiChild(UltraToolbarsManager childToolbarsManager)
   at Infragistics.Win.UltraWinToolbars.UltraToolbarsManager.InternalSetActiveMdiChildManager(UltraToolbarsManager newActiveMdiChildManager, Boolean calledFromMdiChildActivate, Boolean remergeIfUnchanged)
   at Infragistics.Win.UltraWinToolbars.UltraToolbarsManager.OnFormMdiChildActivated(Object sender, EventArgs e)
   at System.EventHandler.Invoke(Object sender, EventArgs e)
   at System.Windows.Forms.Form.OnMdiChildActivate(EventArgs e)
   at System.Windows.Forms.Form.ActivateMdiChildInternal(Form form)
   at System.Windows.Forms.Form.WmMdiActivate(Message& m)
   at System.Windows.Forms.Form.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.DefMDIChildProc(IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at System.Windows.Forms.Form.DefWndProc(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.ContainerControl.WndProc(Message& m)
   at System.Windows.Forms.Form.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at System.Windows.Forms.NativeWindow.DefWndProc(Message& m)
   at System.Windows.Forms.Control.DefWndProc(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.MdiClient.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

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44743

Mike Dour posted over 15 years ago

Can you post some of the code for your derived button? I only need to see the constructor and overridden members.
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Sam posted over 15 years ago in reply to Mike Dour

public interface IMenuItemCommand {void Execute();
}

class RemoveDocumentButton : ButtonTool, IMenuItemCommand {
public RemoveDocumentButton(string key, string text): base(key){
this.Key = key;this.SharedProps.Caption = text;
}

public override string Key {
get {return base.Key;
}

set {
base.Key = value;
}

}
#region IMenuItemCommand Members
public void Execute() {
System.Windows.Forms.MessageBox.Show("TODO: // remove document from collection");
}

#endregion

}

The error seems to occur only when attempt to show my MDI Child Form after I add the derived ButtonTool directly to my UltraToolbar, If I add this button to a PopupButtonTool's Tool collection then all seems to work.??
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44743

Mike Dour posted over 15 years ago in reply to Sam

Ok, I see two problems here. The first is in your call to AddTool in the originally posted code. You are passing "Test Button" as the key, but that is the caption of the tool. Pass in "test" instead. The second problem is that when you use the AddTool method, the root tool is cloned to create the tool instance. In the case of your derived tool, it is going to create a new ButtonTool, not a new RemoveDocumentButton. Add the following override to your derived button:

protected override ToolBase Clone( bool cloneNewInstance )
{
RemoveDocumentButton newTool = new RemoveDocumentButton( this.Key );
newTool.InitializeFrom( this, cloneNewInstance );
return newTool;
}
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Sam posted over 15 years ago in reply to Mike Dour

Mike, Overriding Clone did the trick everything now works as I expect. Sorry, I did have a bug in the originally posted code that I must have introduced when I transcriped it to the forum. Thanks for you response and tell the boss that I said you deserve a raise.
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44743

Mike Dour posted over 15 years ago in reply to Sam

Haha, thanks. I won't forget to pass on the message :)
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