Title without icon

[rover]

Excellent example rover, thanks.

In Yashied's defence, I think his use of the word "prompt" was an an interpretation of "advise" and not a request to be quick.

Thanks Martin

@Yashied

I stand corrected if I've mistaken your intent

[ResNullius]

@rover,

Is the "DestroyIcon" dllCall necessary?

Seems to work fine without it (on XP anyway).

[James]

It's conventional.

[martin]

@rover,

Is the "DestroyIcon" dllCall necessary?

Seems to work fine without it (on XP anyway).

Since the window has been told there is no icon then it won't free the memory used by the icon when it closes, so I think that line is needed.

[rover]

Since the window has been told there is no icon then it won't free the memory used by the icon when it closes, so I think that line is needed.

@ResNullius

As the two handles to the icon are deleted from the WndClassEx struct the icon should be destroyed to free the memory as Martin said

and as James mentioned it's convention, or 'good form' and programming practices I guess. The memory would be freed when the script is exited anyway.

I removed the second destroyicon call for the small icon handle GCL_HICONSM as it always returned 0, even if deleted before GCL_HICON.

its a handle to the same resource anyway, maybe its just an alias to the GCL_HICON handle? I haven't checked MSDN on that one.

[GEOSoft]

@rover

That is so nice that I turned it into a function to include in my dialog.au3 UDF (with your permission of course).

;
#include <GUIConstantsEX.au3>
#include <WindowsConstants.au3>
$hGUI = _GUINoIcon("Test GUI", 300, 200)
GUISetState()

Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE

Func _GUINoIcon($sTitle, $iWidth = -1, $iHeight = -1, $iXpos = -1, $iYpos = -1)
   Local $GCL_HICONSM = -34, $GCL_HICON = -14
   Local $hWnd = GUICreate($sTitle, $iWidth, $iHeight, $iXpos, $iYpos, _
         BitOR($WS_CAPTION, $WS_SYSMENU), $WS_EX_DLGMODALFRAME)
   Local $hIcon = GetClassLong($hWnd, $GCL_HICON)
   DllCall("User32.dll", "int", "DestroyIcon", "hwnd", $hIcon)
   SetClassLong($hWnd, $GCL_HICON, 0)
   SetClassLong($hWnd, $GCL_HICONSM, 0)
   Return $hWnd
EndFunc  ;<==> _GUINoIcon()

Func GetClassLong($hWnd, $nIndex)
   Local $hResult = DllCall("user32.dll", "dword", "GetClassLong", "hwnd", $hWnd, "int", $nIndex)
   Return $hResult[0]
EndFunc  ;<==> GetClassLong()

Func SetClassLong($hWnd, $nIndex, $dwNewLong)
   Local $hResult = DllCall("user32.dll", "dword", "SetClassLong", "hwnd", $hWnd, "int", $nIndex, "long", $dwNewLong)
   Return $hResult[0]
EndFunc  ;<==> SetClassLong()
;

[Yashied]

Many thanks to you, rover! This is a great example! That's exactly what I wanted. Also thanks to all who have discussed this topic.

The word "prompt" I did not mean quick. I would say - a hint (advice).

Thanks again.

Edited March 9, 2009 by Yashied

[rover]

Many thanks to you, rover! This is a great example! That's exactly what I wanted. Also thanks to all who have discussed this topic.

The word "prompt" I did not mean quick. I would say - a hint (advice).

Thanks again.

@Yashied, Your welcome

The word "prompt" I did not mean quick. I would say - a hint (advice).

my mistake

@GeOSoft

That is so nice that I turned it into a function to include in my dialog.au3 UDF (with your permission of course).

No problem.

those API's already coded by others (lod3n, Rasim etc.) as is the WndClassEx struct (Kip)

I have a drop shadow UDF in the examples forum for adding shadows to forms and dialogs by adding the CS_DROPSHADOW style to the WndClassEx struct.

[GEOSoft]

great. Thank you and I'll take a look at the drop shadow as well.