JakeJohnson74

WM_WINDOWPOSCHANGED Question

3 posts in this topic

#1 ·  Posted (edited)

I am having some trouble dealing with the unsigned integer being returned by this message. 

I am looking at the flags parameter on MSDN and I need to convert that Uint to Hex in a way that outputs the value so it will match the format shown in the description the MSDN gives. 

Here is the link to the Message: https://msdn.microsoft.com/en-us/library/windows/desktop/ms632612%28v=vs.85%29.aspx

and here is my example: 

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

GUIRegisterMsg($WM_WINDOWPOSCHANGED, "_WM_WINDOWPOSCHANGED")

$hgui = GUICreate("test", 300, 300, -1, -1, BitOR($WS_OVERLAPPEDWINDOW, $WS_POPUP))
GUISetState()

While 1
    $msg = GUIGetMsg()
    Switch $msg
        Case $GUI_EVENT_CLOSE
            Exit
    EndSwitch
WEnd


func _WM_WINDOWPOSCHANGED($hWnd, $msg, $wParam, $lParam)
    Local $winpos_Struct = DllStructCreate("hwnd hwnd;hwnd hwndInsertAfter;int x;int y;int cx;int cy;uint flags", $lParam)

    ConsoleWrite("+ Position Changed to: -" & @LF)
    ConsoleWrite("hwnd: " & DllStructGetData($winpos_Struct, "hwnd") & @LF)
    ConsoleWrite("hwndafter: " & DllStructGetData($winpos_Struct, "hwndInsertAfter") & @LF)
    ConsoleWrite("x: " & DllStructGetData($winpos_Struct, "x") & @LF)
    ConsoleWrite("y: " & DllStructGetData($winpos_Struct, "y") & @LF)
    ConsoleWrite("cx: " & DllStructGetData($winpos_Struct, "cx") & @LF)
    ConsoleWrite("cy: " & DllStructGetData($winpos_Struct, "cy") & @LF)
    ConsoleWrite("flag: " & DllStructGetData($winpos_Struct, "flags") & @LF)
EndFunc

Any Advice would be helpful! :)

***Edit 

I should have mentioned that the flag can hold one or more members. So I am not sure how I should handle this. This is where my confusion is.

Edited by JakeKenmode

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If a got that you want. maybe using bitwise you can get it.

flags=bitor(SWP_HIDEWINDOW,SWP_NOMOVE)

bitand(flags,SWP_HIDEWINDOW) returns SWP_HIDEWINDOW

Saludos

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Thanks :) Here is the working code. 

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

GUIRegisterMsg($WM_WINDOWPOSCHANGING, "_WM_WINDOWPOSCHANGING")

;WINDOWPOS Contants
;~ Const $SWP_NOSIZE         = 0x0001
;~ Const $SWP_NOMOVE         = 0x0002
;~ Const $SWP_NOZORDER       = 0x0004
;~ Const $SWP_NOREDRAW       = 0x0008
;~ Const $SWP_NOACTIVATE     = 0x0010
;~ Const $SWP_FRAMECHANGED   = 0x0020
;~ Const $SWP_SHOWWINDOW     = 0x0040
;~ Const $SWP_HIDEWINDOW     = 0x0080
;~ Const $SWP_NOCOPYBITS     = 0x0100
;~ Const $SWP_NOREPOSITION   = 0x0200
;~ Const $SWP_NOSENDCHANGING = 0x0400

$hgui = GUICreate("test", 300, 300, -1, -1, BitOR($WS_OVERLAPPEDWINDOW, $WS_POPUP))
GUISetState()

While 1
    $msg = GUIGetMsg()
    Switch $msg
        Case $GUI_EVENT_CLOSE
            Exit
    EndSwitch
WEnd


func _WM_WINDOWPOSCHANGING($hWnd, $msg, $wParam, $lParam)
    Local $winpos_Struct = DllStructCreate("hwnd hwnd;hwnd hwndInsertAfter;int x;int y;int cx;int cy;uint flags", $lParam)


$AboutToMaximizeOrRestore = bitand(DllStructGetData($winpos_Struct, "flags"), $SWP_FRAMECHANGED)

if (hex($AboutToMaximizeOrRestore)) > 0 then
    ConsoleWrite("+ About to Change Maximize or restore -" & @LF)
endif


EndFunc

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