Wrapper for commonly used DLL Call
#include <SendMessage.au3>
_SendMessage ( $hWnd, $iMsg [, $wParam = 0 [, $lParam = 0 [, $iReturn = 0 [, $wParamType = "wparam" [, $lParamType = "lparam" [, $sReturnType = "lresult"]]]]]] )
| $hWnd | Window/control handle |
| $iMsg | Message to send to control (number) |
| $wParam | [optional] Specifies additional message-specific information |
| $lParam | [optional] Specifies additional message-specific information |
| $iReturn | [optional] What to return: 0 - Return value from DLL call 1 - $ihWnd 2 - $iMsg 3 - $wParam 4 - $lParam <0 or > 4 - array same as DllCall() |
| $wParamType | [optional] See DllCall in Related |
| $lParamType | [optional] See DllCall in Related |
| $sReturnType | [optional] See DllCall in Related |
| Success: | the user selected value from the DllCall() result. |
| Failure: | sets the @error flag to non-zero. |
When a message is blocked by UIPI the last error, retrieved with _WinAPI_GetLastError(), is set to 5 (access denied).
DllCall(), _SendMessageA, _WinAPI_GetLastError
#include <MsgBoxConstants.au3>
#include <SendMessage.au3>
Example()
Func Example()
Local Const $iOff = 2, $iOn = -1
Opt("WinTitleMatchMode", 4)
Local $hWnd = WinGetHandle('classname=Progman')
_ToggleMonitor($hWnd, $iOff)
Sleep(3000)
_ToggleMonitor($hWnd, $iOn)
EndFunc ;==>Example
Func _ToggleMonitor($hWnd, $iOnOff)
Local Const $WM_SYSCOMMAND = 274
Local Const $SC_MONITORPOWER = 61808
_SendMessage($hWnd, $WM_SYSCOMMAND, $SC_MONITORPOWER, $iOnOff)
If @error Then
MsgBox($MB_SYSTEMMODAL, "_ToggleMonitor", "_SendMessage Error: " & @error)
Exit
EndIf
EndFunc ;==>_ToggleMonitor