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Re: Ctrl * GetCallbackCtrl() [message #6196 is a reply to message #6193]

Thu, 02 November 2006 14:39

mirek
Messages: 14267
Registered: November 2005

Ultimate Member

unodgs wrote on Thu, 02 November 2006 03:36

Ok, it's not so perfect... Wink

Quote:

Because if I change cursor in ChildGotFocus for edits the cursor change its place immediately on left click. For rest of controls cursor change place in WhenAction routine and it happens mostly on left mouse up.
Anyway I patched a little bit CtrlCore Wink

and I hope you'll accept this. What I've done is:

CtrlCore.h : Ctrl class

virtual void ChildMouseAction(Ctrl * ctrl, int event, Point p) {}

CtrlMouse.cpp

Image Ctrl::DispatchMouseEvent(int e, Point p, int zd) {
	if(!IsEnabled())
		return Image::Arrow();
	if(captureCtrl && captureCtrl != this && captureCtrl->IsMouseActive())
		return captureCtrl->MEvent0(e, p + GetScreenRect().TopLeft() -
		                            captureCtrl->GetScreenRect().TopLeft(), zd);
	Ctrl *top = this;
	if(e == MOUSEWHEEL && !GetParent()) {
		Ctrl *w = GetFocusCtrl();
		if(w) {
			top = w->GetTopCtrl();
			p = GetMousePos() - top->GetScreenRect().TopLeft();
		}
	}
	Ctrl *q = top->ChildFromPoint(p);
	if(parent)
		parent->ChildMouseAction(q, e, p);
	return q ? q->DispatchMouseEvent(e, p, zd) : top->MEvent0(e, p, zd);
}

This line was added:

if(parent) parent->ChildMouseAction(q, e, p);

With such a simple modification I can override ChildMouseActtion in my grid ctrl and has control over mouse events before they go to any child contol.

What do you think about it?

Have you tested? This does not seemt to be correct to me; if I remember well, parent is always NULL here.... (DispatchMouseEvent is called by host platform for TopWindow).

Anyway, I think the requirement itself is sound.

Mirek

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