IsWindow_

[mestnyi]

Code: Select all

hWnd=OpenWindow(10, 0, 0, 300, 200, "", #PB_Window_SystemMenu | #PB_Window_SizeGadget | #PB_Window_MaximizeGadget | #PB_Window_ScreenCentered)

hWnd = 20
If IsWindow_(hWnd)
  Debug hWnd
EndIf
  
hWnd = 100
If IsWindow_(hWnd)
  Debug hWnd
EndIf
  
While WaitWindowEvent()!#PB_Event_CloseWindow :Wend

Why this behavior?

[PureGuy]

What do you expect from that code?
It's unlikely that there are windows with handle 20 and 100.

[ts-soft]

The result of openwindow (if not using #PB_Any), is hwnd!

Code: Select all

hWnd=OpenWindow(10, 0, 0, 300, 200, "", #PB_Window_SystemMenu | #PB_Window_SizeGadget | #PB_Window_MaximizeGadget | #PB_Window_ScreenCentered)

;hWnd = 20
If IsWindow_(hWnd)
  Debug hWnd
EndIf
 
;hWnd = 100
If IsWindow_(hWnd)
  Debug hWnd
EndIf
 
While WaitWindowEvent()!#PB_Event_CloseWindow :Wend 

[mestnyi]

What do you expect from that code?

I want to receive true if is the handle

It's unlikely that there are windows with handle 20 and 100.

That's exactly why the condition?

[Little John]

What do you expect from that code?

I want to receive true if is the handle

Why do you think just 20 or 100 would be a handle?
Why don't you test 21, 47, 188, ... as well?

Code: Select all

hWnd=OpenWindow(10, 0, 0, 300, 200, "", #PB_Window_SystemMenu | #PB_Window_SizeGadget | #PB_Window_MaximizeGadget | #PB_Window_ScreenCentered)

There you already have a window handle. What's wrong with it?
And after you have got that handle, you are overwriting the value of that variable with 20 and 100, respectively. That does not make any sense.

I think you should explain more in detail, what you actually want to achieve.

[mestnyi]

What are you stuck on 20 100, this is an example that these conditions did not have to work because these numbers are not the handle

Code: Select all

hWnd=OpenWindow(10, 0, 0, 300, 200, "", #PB_Window_SystemMenu | #PB_Window_SizeGadget | #PB_Window_MaximizeGadget | #PB_Window_ScreenCentered)

If IsWindow_(hWnd)
  Debug "Is WindowHandle "+hWnd
EndIf
  
hWnd = 19
If Not IsWindow_(hWnd)
  Debug "Is Not WindowHandle "+hWnd 
EndIf

hWnd = 20
If IsWindow_(hWnd)
  Debug "Is WindowHandle "+hWnd ;is not handle why work???
EndIf
  
While WaitWindowEvent()!#PB_Event_CloseWindow :Wend

If, and now it is not clear, I do not know how to explain it

[PureGuy]

It doesn't work here, so on your system there is a windows that has a handle with value 20.
There 100 or better say thousand of windows on your current desktop most of these are hidden.

Why shouldn't you have luck that one has a hwnd of 20?

[Fred]

IsWindow_() test all window in the whole OS, not just the window in your pogram, so it's possible you have a window handle of 20.

[netmaestro]

20 is a valid hwnd on my system as well. GetClassname returns #32774, which is 'tooltip'. No idea for what but it could be a bug in the OS as I don't believe it's legitimate. A combination of EnumWindows and EnumChildWindows returns a list of hwnds the smallest of which is 65560. Yet IsWindow_(20) returns true and GetClassname works for it. Puzzling.

[mestnyi]

IsWindow_() test all window in the whole OS

This explains a lot, how to be? how to distinguish between the handle on the number? better yet how to distinguish a gadget from the statement handle window handle.
I probably bored you, but with this I have a problem.

[netmaestro]

One possibility is that 20 is the handle for a reward tooltip that MS gives out to users who never ever look at porn on their computer. Me and Mestnyi are safe, but I don't know what that says about the rest of you guys...

[mestnyi]

Me and Mestnyi are safe

there are not only 20 there are many 22, 100, 300 ...

[electrochrisso]

One possibility is that 20 is the handle for a reward tooltip that MS gives out to users who never ever look at porn on their computer. Me and Mestnyi are safe, but I don't know what that says about the rest of you guys...

Hey! Maybe thats the reason I never get a 20, and I am also going blind.

[RASHAD]

MSDN
Remarks
A thread should not use IsWindow for a window that it did not create because the window could be destroyed after this function was called. Further, because window handles are recycled the handle could even point to a different window.

[Little John]

Aaaahhh ... Now I see what the actual question was.

One possibility is that 20 is the handle for a reward tooltip that MS gives out to users who never ever look at porn on their computer. Me and Mestnyi are safe, but I don't know what that says about the rest of you guys...