private static bool EnumMonitorsProc(IntPtr hMonitor, IntPtr hdcMonitor, ref RectStruct lprcMonitor, IntPtr dwData)
{
MonitorInfoEx mi = new MonitorInfoEx();
mi.Size = (uint)Marshal.SizeOf(mi);
bool success = GetMonitorInfo(hMonitor, ref mi);
if (success)
{
ScreenInfo si = new ScreenInfo();
si.MonitorArea = Oblong.FromRectStruct(mi.Monitor);
si.WorkArea = Oblong.FromRectStruct(mi.WorkArea);
si.DeviceName = mi.DeviceName;
si.IsPrimaryScreen = ((mi.Flags & MONITORINFOF_PRIMARY) == 1);;
DEVMODE DeviceMode = new DEVMODE();
DeviceMode.Initialize();
if (EnumDisplaySettingsEx(ToLPTStr(mi.DeviceName), -1, ref DeviceMode))
{
si.Scaling = Math.Round(((double)DeviceMode.dmPelsHeight / (mi.Monitor.bottom - mi.Monitor.top)) * 100);
}
si.NativeWorkArea = new Oblong((int)(mi.WorkArea.left * si.Scaling) / 100, (int)(mi.WorkArea.top * si.Scaling) / 100, (int)(mi.WorkArea.right * si.Scaling) / 100, (int)(mi.WorkArea.bottom * si.Scaling) / 100);
si.NativeArea = new Oblong((int)(mi.Monitor.left * si.Scaling) / 100, (int)(mi.Monitor.top * si.Scaling) / 100, (int)(mi.Monitor.right * si.Scaling) / 100, (int)(mi.Monitor.bottom * si.Scaling) / 100);
Display.Screens.Add(si);
}
return(true);
}
private static DEVMODE GetDeviceMode()
{
var mode = new DEVMODE();
mode.Initialize();
if (Win32Api.EnumDisplaySettings(null, Win32Api.ENUM_CURRENT_SETTINGS, ref mode))
{
return(mode);
}
else
{
throw new InvalidOperationException(GetLastError());
}
}
public static double getMonitorScaling(MonitorInfoEx monitor)
{
DEVMODE DeviceMode = new DEVMODE();
DeviceMode.Initialize();
if (EnumDisplaySettingsEx(ToLPTStr(monitor.DeviceName), -1, ref DeviceMode))
{
//si.NativeHeight = DeviceMode.dmPelsHeight;
//si.NativeWidth = DeviceMode.dmPelsWidth;
return(Math.Round((double)DeviceMode.dmPelsHeight / (monitor.Monitor.bottom - monitor.Monitor.top), 2));
}
return(1);
}
public CResolution(uint w,uint h,Screen s)
{
Screen screen = s;
uint iWidth = w;
uint iHeight = h;
DEVMODE dm = new DEVMODE();
dm.Initialize();
//dm.dmDeviceName = new String (new char[32]);
//dm.dmFormName = new String (new char[32]);
//dm.dmSize = (ushort)Marshal.SizeOf (dm);
// make sure we can read current monitor settings
if (User_32.EnumDisplaySettings (StringExtensions.ToLPTStr(screen.DeviceName), User_32.ENUM_CURRENT_SETTINGS, ref dm))
{
dm.dmPelsWidth = iWidth;
dm.dmPelsHeight = iHeight;
// check to see if requested graphics mode can be set
int iRet = User_32.ChangeDisplaySettingsEx (screen.DeviceName, ref dm, IntPtr.Zero, ChangeDisplaySettingsFlags.CDS_TEST, IntPtr.Zero);
if (iRet == User_32.DISP_CHANGE_FAILED)
{
MessageBox.Show("DISP_CHANGE_FAILED", "FAILURE",MessageBoxButtons.OK,MessageBoxIcon.Information);
}
else
{
//have to use ChangeDisplaySettingsEx() instead of ChangeDisplaySettings() so we can specify device name (for multi-monitor support)
iRet = User_32.ChangeDisplaySettingsEx(screen.DeviceName, ref dm, IntPtr.Zero, ChangeDisplaySettingsFlags.CDS_UPDATEREGISTRY, IntPtr.Zero);
switch (iRet)
{
case User_32.DISP_CHANGE_SUCCESSFUL:
{
break;
//successfull change
}
case User_32.DISP_CHANGE_RESTART:
{
MessageBox.Show("Resolution Change Requires Reboot.","Information",MessageBoxButtons.OK,MessageBoxIcon.Information);
break;
//windows 9x series you have to restart
}
default:
{
MessageBox.Show("Something has gone horribly wrong.","Unknown Failure",MessageBoxButtons.OK,MessageBoxIcon.Information);
break;
//failed to change
}
}
}
}
}
