如何在Windows 7中设置显示器方向?

我想写一些有趣的代码在Windows 7上翻转方向。请参阅我想要控制的选项的屏幕截图。


监控方向


这是我的代码:

class Program { public const long WM_PAINT=0x0F; public const long WM_DISPLAYCHANGE=0x7E; [StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)] public struct DEVMODE // taken from Win API { ... public System.Windows.Forms.ScreenOrientation dmDisplayOrientation; } [DllImport("user32.dll", CharSet=CharSet.Auto)] public static extern bool EnumDisplaySettings(string lpszDeviceName, int iModeNum, ref DEVMODE lpDevMode); [DllImport("user32.dll", CharSet=CharSet.Ansi)] public static extern int ChangeDisplaySettings(ref DEVMODE lpDevMode, int dwFlags); [DllImport("User32.Dll")] public static extern long PostMessage(IntPtr hWnd, long wMsg, long wParam, long lParam); static void Main(string[] args) { ScreenOrientation ori=ScreenOrientation.Angle0; DEVMODE mode=new DEVMODE() { dmSize=(short)Marshal.SizeOf(typeof(DEVMODE)), dmDriverExtra=0, dmDeviceName=new string(new char[32]), dmFormName=new string(new char[32]), }; try { EnumDisplaySettings(null, -1, ref mode); if((mode.dmFields&0x80)>0) { ori=mode.dmDisplayOrientation; } mode.dmDisplayOrientation=ScreenOrientation.Angle270; int temp=mode.dmPelsWidth; mode.dmPelsWidth=mode.dmPelsHeight; mode.dmPelsHeight=temp; int ret=ChangeDisplaySettings(ref mode, 0); PostMessage(Process.GetCurrentProcess().Handle, WM_DISPLAYCHANGE, 0, 0); ... } catch { } } } 

哪个运行,但不会产生任何影响。

参考代码: http : //justlikeamagic.com/2009/05/21/changing-display-settings-programmatically/和http://msdn.microsoft.com/en-us/library/ms812499.aspx#tbconchgscrn_chngingdisplay

我已经开始了。

请看一下: MultiMonitorHelper

它包含Win7的必要结构,因此您可以调用SetDisplayConfig和其他函数。

一个实际的例子,如何将显示器旋转90度:

  int numPathArrayElements; int numModeInfoArrayElements; const QueryDisplayFlags pathType = QueryDisplayFlags.OnlyActivePaths; // query active paths from the current computer. // note that 0 is equal to SUCCESS! // TODO; HARDCODE MAGIC VALUES AWAY. if (CCDWrapper.GetDisplayConfigBufferSizes(pathType, out numPathArrayElements, out numModeInfoArrayElements) == 0) { var pathInfoArray = new DisplayConfigPathInfo[numPathArrayElements]; var modeInfoArray = new DisplayConfigModeInfo[numModeInfoArrayElements]; // TODO; FALLBACK MECHANISM THAT HANDLES DIFFERENT VALUES FOR ZERO. if (CCDWrapper.QueryDisplayConfig( pathType, ref numPathArrayElements, pathInfoArray, ref numModeInfoArrayElements, modeInfoArray, IntPtr.Zero) == 0) { pathInfoArray[0].targetInfo.rotation = DisplayConfigRotation.Rotate90; CCDWrapper.SetDisplayConfig((uint) numPathArrayElements, pathInfoArray, (uint) numModeInfoArrayElements, modeInfoArray, SdcFlags.Apply | SdcFlags.UseSuppliedDisplayConfig); } } 

它现在是原始的,这意味着现在没有“C#style”API,但是,你可以使用这些结构。

在Windows 7上, ChangeDisplaySetting具有已知的兼容性问题。 解决方法是调用WDK函数: SetDisplayConfig

http://social.msdn.microsoft.com/Forums/en/windowsuidevelopment/thread/5bc2396d-1e0e-44fb-b73b-95f8dfc45684