Event window resize

[TheBreeder]

I have created the content of a window depending on the size of the window. If a button or field is addressed, I can find the size of the window and adapt the eventual controls. Is there an event that can be triggerd if a window is resized ?

Thanks

[water]

You can use something like "GUIRegisterMsg($WM_SIZE, 'WM_SIZE')" which will run the function "WM_SIZE($hWnd, $Msg, $wParam, $lParam)" when your window is resized.

See this post for an example.

[TheBreeder]

You can use something like "GUIRegisterMsg($WM_SIZE, 'WM_SIZE')" which will run the function "WM_SIZE($hWnd, $Msg, $wParam, $lParam)" when your window is resized.

See this post for an example.

this will give me the new actual size, but I'm not triggerd when the users has resized the window. I have to use waits and thing like that to be able to detect a change.

[water]

When I run the following code the function "MY_WM_SIZE" is called as long as the user resizes the window.

Do you want to know when the user has finished resizing the window? Then I think you'll have to combine the above code with code to check if the user has released the left mouse button.

[Authenticity]

Windows post a message only when the user change the window size. If the user is resizing the window but the mouse button remains pressed, you won't be notified about it with WM_SIZE because it's not triggered until the user release the mouse button. You can use GUICtrlSetResizing to dock or otherwise move the control relative to the window width or height.

Edited May 4, 2009 by Authenticity

[water]

If the user is resizing the window but the mouse button remains pressed, you won't be notified about it with WM_SIZE because it's not triggered until the user release the mouse button.

I don't think this is true. I've inserted a consolewrite at the beginning of the MY_WM_SIZE function (see my previous post fo the link) and I get messages on the console as long as i resize the GUI AND the mouse button is pressed.

I'm running Autoit 3.3.0 on Windows XP.

[TheBreeder]

I don't think this is true. I've inserted a consolewrite at the beginning of the MY_WM_SIZE function (see my previous post fo the link) and I get messages on the console as long as i resize the GUI AND the mouse button is pressed.

I'm running Autoit 3.3.0 on Windows XP.

I get it work.

Thanks all for your input.

This will close for me the topic.

Richard

[Melba23]

Authenticity,

I am with you on this one.

M23

P.S. Not that I am ever really against you, you understand! :-)

[Zedna]

Windows post a message only when the user change the window size. If the user is resizing the window but the mouse button remains pressed, you won't be notified about it with WM_SIZE because it's not triggered until the user release the mouse button. You can use GUICtrlSetResizing to dock or otherwise move the control relative to the window width or height.

I think this may be affected by Windows' option "Draw content of windows while moving".

I have always ON this option and WM_SIZE is triggered all the time I'm resizing window.

Edited May 4, 2009 by Zedna

[Melba23]

Zedna,

After some minutes of fruitless searching, please give me a hint as to where that option is hidden (on Vista if possible!) and I will tell you if it is on/off on my system!

M23

[Authenticity]

I don't think this is true. I've inserted a consolewrite at the beginning of the MY_WM_SIZE function (see my previous post fo the link) and I get messages on the console as long as i resize the GUI AND the mouse button is pressed.

I'm running Autoit 3.3.0 on Windows XP.

The code you've posted calling the event twice each time, once upon user action and once because of WinMove function call.

Both, your code and this one are calling the event only when the user is releasing the mouse button:

#include <WindowsConstants.au3>

GUIRegisterMsg($WM_SIZE, 'onresize')

Dim $hGUI = GUICreate('Test', 100, 100, Default, Default, BitOR($WS_POPUP, $WS_THICKFRAME))
Dim $iCount = 0

GUISetState()

Do
Until GUIGetMsg() = -3

Func onresize($hwnd, $iMsg, $iwParam, $ilParam)
    ConsoleWrite('Data ' & $iCount & @LF)
    $iCount += 1
    
    Return 'GUI_RUNDEFMSG'
EndFunc

I guess something is not clear, ;].

Edited May 4, 2009 by Authenticity

[martin]

Zedna,

After some minutes of fruitless searching, please give me a hint as to where that option is hidden (on Vista if possible!) and I will tell you if it is on/off on my system!

M23

I don't know about Vista but in XP the setting is in desktop Properties, Appearance, Effect, showwindows contents while dragging. If you don't have show windows contents while dragging then WM_SIZE is only sent to a window at the start of resizing and at the end just before sending WM_EXITSIZEMOVE.

[Authenticity]

Correct martin, sorry for misleading whoever I'm misleading here ;].

[Zedna]

Zedna,

After some minutes of fruitless searching, please give me a hint as to where that option is hidden (on Vista if possible!) and I will tell you if it is on/off on my system!

M23

Free translation from my Czech Windows:

WIN98:

menu Start/Settings/Options of folder --> Tab "Show" --> checkbox "Show content of window while dragging"

WINXP:

right click on "This computer" on the desktop --> Tab "?Specify?" --> In group "Performance" button "Setup or Setting" --> Tab "Visual effects" --> checkbox "Show content of window while dragging"

Edited May 4, 2009 by Zedna

[Melba23]

martin,

Thanks. I found "Show window contents while dragging" under "Personalization - Window Color and Appearance - Appearance - Effects". It is "On".

On closer inspection of a script using WM_SIZE, I do appear to get multiple returns from the Registered function as I resize a window. However, I use the function to set a flag which I check in the main While...WEnd loop - and this is only triggered once, as the mouse button is released.

The snippets concerned:

While 1
    
    Switch GUIGetMsg()
    ; various Cases

; Look for resize message
    If $fResized Then       
        ConsoleWrite("Loop" & @CRLF) ; <<<<< Added to check
        ; Other code to reorganise/resize the GUI contents (tabs and a listview)

        ; Reset flag
        $fResized = False
    EndIf
WEnd

; -------

Func MY_WM_SIZE($hWnd, $Msg, $wParam, $lParam)
    
    $iGUIWidth = BitAND($lParam, 0xFFFF)
    $iGUIHeight = BitShift($lParam, 16)
; Set flag
    $fResized = True
        
    ConsoleWrite("Function" & @CRLF) ; <<<<< Added to check
        
    Return $GUI_RUNDEFMSG
    
EndFunc  ;==>MY_WM_SIZE

The script works perfectly - the internal GUI reorgaisation only taking place after mouse button release. Does this GUIRegisterMsg code take over the script in much the same way as a HotKetSet? That could explain why the While...WEnd loop does not even get a chance to check the flag until after mouse button release - which gives the impression of a single return from the function.

M23