100分请教高手关于屏幕的显示位置的问题!急!!
我需要编写一个程序,修改屏幕的显示位置。看到了下面的文章:
http://allancandy.cnblogs.com/articles/221958.html
想到了这样的方法:
public enum DMDO
{
DEFAULT = 0,
D90 = 1,
D180 = 2,
D270 = 3
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
struct DEVMODE
{
public const int DM_DISPLAYFREQUENCY = 0x400000;
public const int DM_PELSWIDTH = 0x80000;
public const int DM_PELSHEIGHT = 0x100000;
public const int DM_POSITION = 0x000020;//从VC6头文件查到的,应该没错
private const int CCHDEVICENAME = 32;
private const int CCHFORMNAME = 32;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = CCHDEVICENAME)]
public string dmDeviceName;
public short dmSpecVersion;
public short dmDriverVersion;
public short dmSize;
public short dmDriverExtra;
public int dmFields;
public int dmPositionX;
public int dmPositionY;
public DMDO dmDisplayOrientation;
public int dmDisplayFixedOutput;
public short dmColor;
public short dmDuplex;
public short dmYResolution;
public short dmTTOption;
public short dmCollate;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = CCHFORMNAME)]
public string dmFormName;
public short dmLogPixels;
public int dmBitsPerPel;
public int dmPelsWidth;
public int dmPelsHeight;
public int dmDisplayFlags;
public int dmDisplayFrequency;
public int dmICMMethod;
public int dmICMIntent;
public int dmMediaType;
public int dmDitherType;
public int dmReserved1;
public int dmReserved2;
public int dmPanningWidth;
public int dmPanningHeight;
}
[DllImport("user32.dll", CharSet = CharSet.Auto)]
static extern int ChangeDisplaySettings([In] ref DEVMODE lpDevMode, int dwFlags);
public void ChangeRes()
{
Form1 t = new Form1();
long RetVal = 0;
DEVMODE dm = new DEVMODE();
dm.dmPositionX = 100;//X坐标
dm.dmPositionY = 200;//Y坐标
dm.dmSize = (short)Marshal.SizeOf(typeof(DEVMODE));
dm.dmPelsWidth = Int32.Parse(width.Text);
dm.dmPelsHeight = Int32.Parse(height.Text);
dm.dmFields = DEVMODE.DM_PELSWIDTH | DEVMODE.DM_PELSHEIGHT | DEVMODE.DM_POSITION;
RetVal = ChangeDisplaySettings(ref dm, 0);
}
可是发现能成功修改分辨率但不能修改屏幕的显示位置。
请问我的思路是否正确?如果总体思路正确请指出哪里出了问题
如果总体思路不正确,请指点明路