OpenEuphoria

Re: Win32Lib; Timed events

• Posted by CChris <christian.cuvier at a?riculture?gouv.fr> May 16, 2008
• 688 views

ZNorQ wrote:
> 
> CChris wrote:
> > 
> > ZNorQ wrote:
> > > 
> > > CChris wrote:
> > > > 
> > > > I said "any control will do". 0 is not an actual control id, not even a
> > > > valid
> > > > handle for Windows. It is a special value which is treated, somewhat
> > > > consistently,
> > > > as if refeerring to the desktop window. But it actually doesn't.
> > > > 
> > > > CChris
> > > 
> > > Ah, ok. But how would i go about then when I'm creating a program that
> > > doesn't
> > > pop-up a window. I know I can use WinMain(0, Normal), but how do I use the
> > > timer
> > > in this case?
> > > 
> > > Purpose of the code; Run in the background and run various code in
> > > intervals.
> > > 
> > > Kenneth/ZNorQ
> > 
> > CreateEx a main window that is not visible and has the WS_EX_NOACTIVATE
> > extended
> > style (so it won't show in the toolbar). Then WinMain(the_window,Minimized).
> > This is probably close to what you want.
> > A cleaner way woul be to support message only windows, but it would work on
> > Win2K only, and currently requires low level API to create it. I'll think
> > about
> > it.
> > 
> > CChris
> 
> I just tried something else before I saw your answer; (VERY abbreviated)
> 
> mywin= createEx(window, etc...)
> setTimer(mywin, 1, 1000)
> setHandler(mywin, etc...)
> WinMain(0,Normal)
> 
> And it *seems* to work! I'll have a go at your version as well. 
> 
> As for "message only windows", I'm not that fluent in WinAPI coding to even
> remotely understand what your are talking about.. :)
> 
> Thanks for the input, CChris.
> 
> ZNorQ

Other Windows developers had needed a window that would just take and dispatch
messages, and nothing else (no switching to it, no taskbar button, no rectagle on
screen, no nothing).

You can always do this by defining the event loop of the window
accordingly.That's how it was done under Win9x. A good recipe for bugs. You can
do that using win32lib's setDefaultProcessing().

So, in Win2K and onwards, there is a special sort of window with such a
minimalistic functionality, which is called "message only window". win32lib
cannot currently createEx() it, but the Windows API sure can (if curious, google
for HWND_MESSAGE and check links to MSDN in the result).


CChris