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这个函数以前在论坛找的,为什么我在XP系统调用正常,而在WIN7系统,其他分辨率都正常,而就是不能改变到最大分辩率,大家来帮我看看啊,谢谢了。
Func _ChangeScreenRes($i_Width, $i_Height, $i_BitsPP, $i_RefreshRate)
Local Const $DM_PELSWIDTH = 0x00080000
Local Const $DM_PELSHEIGHT = 0x00100000
Local Const $DM_BITSPERPEL = 0x00040000
Local Const $DM_DISPLAYFREQUENCY = 0x00400000
Local Const $CDS_TEST = 0x00000002
Local Const $CDS_UPDATEREGISTRY = 0x00000001
Local Const $DISP_CHANGE_RESTART = 1
Local Const $DISP_CHANGE_SUCCESSFUL = 0
Local Const $HWND_BROADCAST = 0xffff
Local Const $WM_DISPLAYCHANGE = 0x007E
If $i_Width = "" Or $i_Width = -1 Then $i_Width = @DesktopWidth ; default to current setting
If $i_Height = "" Or $i_Height = -1 Then $i_Height = @DesktopHeight ; default to current setting
If $i_BitsPP = "" Or $i_BitsPP = -1 Then $i_BitsPP = @DesktopDepth ; default to current setting
If $i_RefreshRate = "" Or $i_RefreshRate = -1 Then $i_RefreshRate = @DesktopRefresh ; default to current setting
Local $DEVMODE = DllStructCreate("byte[32];int[10];byte[32];int[6]")
Local $B = DllCall("user32.dll", "int", "EnumDisplaySettings", "ptr", 0, "long", 0, "ptr", DllStructGetPtr($DEVMODE))
If @error Then
$B = 0
SetError(1)
Return $B
Else
$B = $B[0]
EndIf
If $B <> 0 Then
DllStructSetData($DEVMODE, 2, BitOR($DM_PELSWIDTH, $DM_PELSHEIGHT, $DM_BITSPERPEL, $DM_DISPLAYFREQUENCY), 5)
DllStructSetData($DEVMODE, 4, $i_Width, 2)
DllStructSetData($DEVMODE, 4, $i_Height, 3)
DllStructSetData($DEVMODE, 4, $i_BitsPP, 1)
DllStructSetData($DEVMODE, 4, $i_RefreshRate, 5)
$B = DllCall("user32.dll", "int", "ChangeDisplaySettings", "ptr", DllStructGetPtr($DEVMODE), "int", $CDS_TEST)
If @error Then
$B = -1
Else
$B = $B[0]
EndIf
Select
Case $B = $DISP_CHANGE_RESTART
$DEVMODE = ""
Return 2
Case $B = $DISP_CHANGE_SUCCESSFUL
DllCall("user32.dll", "int", "ChangeDisplaySettings", "ptr", DllStructGetPtr($DEVMODE), "int", $CDS_UPDATEREGISTRY)
DllCall("user32.dll", "int", "SendMessage", "hwnd", $HWND_BROADCAST, "int", $WM_DISPLAYCHANGE, _
"int", $i_BitsPP, "int", $i_Height * 2 ^ 16 + $i_Width)
$DEVMODE = ""
Return 1
Case Else
$DEVMODE = ""
SetError(1)
Return $B
EndSelect
EndIf
EndFunc ;==>_ChangeScreenRes |
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