Use events - when mouse is clicked on "control C", you should handle it in parent.
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How do I propagate children controls events?
Very simple,
I have a user control (A) that contains a list of a user controls (B), that each B contains a user control (C).
I have a context menu in A that needs manage B controls (add, remove, select etc.)
The problem is when I right click on a C control, the grandparent (A) doesn't know a bout it.
Even if I manage to call it by subscribing it's methods (methods of A) to C events (E.g. MouseUp) ,
I get the mouse point related to C and not to A, thus while trying to find the child with
GetChildAtPoint() I get the wrong child.
What's the best way to handle this?
How do I forward the mouseUp caught by a grandson control to it's granparent?
Thanks!
Udi.
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Answers
"I get the mouse point related to C and not to A, thus while trying to find the child with
GetChildAtPoint() I get the wrong child."
Use the PointToScreen() and PointToClient() functions.
From (C), convert the click point to Screen coords using PointToScreen(). Then you can pass that value to (A) (thru events or however you want to do it) which will convert it to Client coords using PointToClient(). Once it is in client coords you can then use the GetChildAtPoint() function.
But if you have a nesting like you describe, A --> B --> C, I'm not sure you can get a (C) control from (A) via GetChildAtPoint(). You may only get (B) controls from the function...not sure there.
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by: PeterFearnPosted on 2006-02-07 at 03:57:51ID: 15891316
I'm guessing you're talking about windows forms?
The reason I ask, is that in web forms you can call RaiseBubbleEvent in the child control, and handle it by overriding OnBubbleEvent on the Page
You could do somthing like this in the control when you right click
UdibsControl control = Parent.Parent as UdibsControl; // if udibscontrol is the type of your user control
control.HandleRightClick(t