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Home » Developing U++ » U++ Developers corner » Using Pen with U++
Re: Using Pen with U++ [message #56712 is a reply to message #56711] Sun, 04 April 2021 20:42 Go to previous messageGo to previous message
mirek is currently offline  mirek
Messages: 13976
Registered: November 2005
Ultimate Member
Tom1 wrote on Sun, 04 April 2021 20:35
Hi Mirek,

Thanks for accepting the changes.

It was a stupid mistake of me to use Image::Arrow() instead of CursorImage(). It should be in CtrlMouse.cpp(145) like:
	if(supports_pen && is_pen_event) return CursorImage(p, keyflags); // Avoid duplicated pen events

Without 'supports_pen' it would become a tedious battle in client code to avoid various pen originated duplicate mouse events, so I rather block them just before. Anyway, making 'bool supports_pen;' a configurable flag in Ctrl:: in CtrlCore.h is fine with me:



I understand that, but would that be really that hard? Esp. now that we have K_PEN?

Quote:

	Ctrl&   EnablePenSupport(bool b = true)                   { supports_pen = b; return *this; }

Then, to avoid Pen() return value assignment in Win32Proc.cpp(147), we should remove 'supports_pen =' and have just:
				q->Pen(p, pen, GetMouseFlags());


This works here. (I will of course add 'EnablePenSupport();' to constructors of Pen() enabled widgets.)

This includes RectTracker::RectTracker() in LocalLoop.cpp:
RectTracker::RectTracker(Ctrl& master)
{
	EnablePenSupport();


Best regards,

Tom


Actually, maybe you could rather not call EnablePenSupport in RectTracker contructor and leave that to client code?

But then, should not that prevent call of Pen virtual method too?

BTW, given what it does, should not that rather be called "DiasbleMouse"? Smile

Mirek
 
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