_ChangeScreenRes()如何修改系统支持的最大屏幕分辨率？
本帖最后由 yifang3878 于 2013-2-19 11:29 编辑_ChangeScreenRes()修改系统支持的最大分辨率的时候会失败，比如系统最大支持1366*768，_ChangeScreenRes(1366,768)会执行失败。
代码如下，请问如何修改函数？
#include-once
;===============================================================================
;
; 函数名称: _ChangeScreenRes()
; 详细信息: 修改 屏幕分辨率,刷新率.
; 版本: 1.0.0.1
; 参数: $i_Width - 屏幕宽度(如1024X768 中的 1024)
; $i_Height - 屏幕高度(如1024X768 中的 768)
; $i_BitsPP -桌面颜色深度(如 32BIT,32位)
; $i_RefreshRate - 屏幕刷新率(如 75 MHZ).
; 需求 AutoIt 测试版 > 3.1 以上
; 返回值: 成功,屏幕更新,@ERROR = 0
; 失败,屏幕不更新, @ERROR = 1
; 论坛: http://www.autoitscript.com/forum/index.php?showtopic=20121
; 作者: Original code - psandu.ro
; Modifications - PartyPooper
; 翻译: thesnow
;
;===============================================================================
Func _ChangeScreenRes($i_Width = @DesktopWidth, $i_Height = @DesktopHeight, $i_BitsPP = @DesktopDepth, $i_RefreshRate = @DesktopRefresh)
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;int;byte;int")
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
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
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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