Prevent a control from being redrawed

[Kip]

Hi,

I want to stop a control being redrawed. It works pretty well actually, using:

_SendMessage($hButton, $WM_SETREDRAW, False, 0)

But then, when I want to start drawing again using:

_SendMessage($hButton, $WM_SETREDRAW, True, 0)

it doesn't redraw.

I tried several combinations with _WinAPI_RedrawWindow($hButton) and _WinAPI_InvalidateRect($hButton)

but none of them work.

Thnx, Kip

Edited September 7, 2008 by Kip

[Kip]

Bump

[martin]

Bump

Can you give some sample code for us to play with?

[Kip]

Nevermind, I already got it working.

Btw: Does anyone know how to get messages from a control that isn't being painted.

Because when I stop redrawing, lets say, a button, it doesnt notify me anymore when it is pressed.

[Kip]

bump?

[PsaltyDS]

Nevermind, I already got it working.

How? Please post your resolution of the first issue, as others may find this topic in search for the same answer.

Btw: Does anyone know how to get messages from a control that isn't being painted.

Because when I stop redrawing, lets say, a button, it doesnt notify me anymore when it is pressed.

Messages? Have you tried it in event mode?

[Kip]

How? Please post your resolution of the first issue, as others may find this topic in search for the same answer.

By calling _SendMessage($hButton, $WM_SETREDRAW, False, 0) outside the notification.

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#Include <WindowsConstants.au3>
#include <GuiConstantsEx.au3>
#include <WinAPI.au3>

$Draw = 0

$GUI = GUICreate("Buttons", 500, 400)
    
    $iButton = GUICtrlCreateButton("Frozen",100,100,120,23)
    $hButton = GUICtrlGetHandle($iButton)
    
    GUIRegisterMsg($WM_PAINT, "Paint")
    
GUISetState()


While 1
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            ExitLoop
            
        Case $iButton
            
            MsgBox(0,"sdsds","sdsds")
            
    EndSwitch
    
    If $Draw = 1 Then
        
        _SendMessage($hButton,$WM_SETREDRAW,False,0); Wont be redrawed. It's 'Frozen'
        
        $Draw = 0
    EndIf
    
WEnd


Func Paint($hWnd, $iMsg, $wParam, $lParam)
    
    If $hWnd = $GUI Then
        
        _SendMessage($hButton,$WM_SETREDRAW,True,0)
        
        _WinAPI_RedrawWindow($GUI)
        
        $Draw = 1
        
    EndIf
    
EndFunc

[PsaltyDS]

By calling _SendMessage($hButton, $WM_SETREDRAW, False, 0) outside the notification.

Thanks for posting the resolution. >_<

On having the control still work while not being redrawn, did you try GuiOnEventMode?

Edit: Nope, not in EventMode either. (I couldn't figure out what the point of registering $WM_PAINT was, so I took it out.)

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#include <WindowsConstants.au3>
#include <GuiConstantsEx.au3>
#include <WinAPI.au3>

Opt("GuiOnEventMode", 1)

$Draw = True
$n = 0

$GUI = GUICreate("Buttons", 500, 400)
GUISetOnEvent($GUI_EVENT_CLOSE, "_Quit")

$iButton_1 = GUICtrlCreateButton("UnFrozen: " & $n, 100, 100, 200, 23)
$hButton_1 = GUICtrlGetHandle(-1)
GUICtrlSetOnEvent(-1, "_ButtonHit")

$iButton_2 = GUICtrlCreateButton("Freeze", 100, 200, 200, 23)
GUICtrlSetOnEvent(-1, "_ButtonHit")

GUISetState()

AdlibEnable("_IncrementN", 2000)

While 1
    Sleep(20)
WEnd

Func _Quit()
    Exit
EndFunc  ;==>_Quit

Func _ButtonHit()
    Switch @GUI_CtrlId
        Case $iButton_1
            MsgBox(0, "Button", "$n = " & $n)
        Case $iButton_2
            $Draw = Not $Draw
            If $Draw Then
                GUICtrlSetData($iButton_2, "Freeze")
                _SendMessage($hButton_1, $WM_SETREDRAW, True, 0); Will be redrawn. It's 'UnFrozen'
            Else
                GUICtrlSetData($iButton_2, "UnFreeze")
                GUICtrlSetData($iButton_1, "Frozen")
                _SendMessage($hButton_1, $WM_SETREDRAW, False, 0); Wont be redrawn. It's 'Frozen'
            EndIf
    EndSwitch
EndFunc  ;==>_ButtonHit

Func _IncrementN()
    $n += 1
    GUICtrlSetData($iButton_1, "UnFrozen: " & $n)
EndFunc  ;==>_IncrementN

Edited September 24, 2008 by PsaltyDS

[Kip]

(I couldn't figure out what the point of registering $WM_PAINT was, so I took it out.)

To redraw the window when moving the window out of the screen.