internal Screen(IntPtr monitor, IntPtr hdc)
{
IntPtr screenDC = hdc;
if (!multiMonitorSupport || monitor == (IntPtr)PRIMARY_MONITOR)
{
// Single monitor system
//
bounds = SystemInformation.VirtualScreen;
workingArea = SystemInformation.WorkingArea;
primary = true;
deviceName = "DISPLAY";
}
else
{
// MultiMonitor System
// We call the 'A' version of GetMonitorInfoA() because
// the 'W' version just never fills out the struct properly on Win2K.
//
NativeMethods.MONITORINFOEX info = new NativeMethods.MONITORINFOEX();
SafeNativeMethods.GetMonitorInfo(new HandleRef(null, monitor), info);
bounds = Rectangle.FromLTRB(info.rcMonitor.left, info.rcMonitor.top, info.rcMonitor.right, info.rcMonitor.bottom);
workingArea = Rectangle.FromLTRB(info.rcWork.left, info.rcWork.top, info.rcWork.right, info.rcWork.bottom);
primary = ((info.dwFlags & MONITORINFOF_PRIMARY) != 0);
int count = info.szDevice.Length;
while (count > 0 && info.szDevice[count - 1] == (char)0)
{
count--;
}
deviceName = new string(info.szDevice);
deviceName = deviceName.TrimEnd((char)0);
if (hdc == IntPtr.Zero)
{
screenDC = UnsafeNativeMethods.CreateDC(deviceName);
}
}
hmonitor = monitor;
this.bitDepth = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, screenDC), NativeMethods.BITSPIXEL);
this.bitDepth *= UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, screenDC), NativeMethods.PLANES);
if (hdc != screenDC)
{
UnsafeNativeMethods.DeleteDC(new HandleRef(null, screenDC));
}
}
internal Screen(IntPtr monitor, IntPtr hdc)
{
IntPtr screenDC = hdc;
if (!multiMonitorSupport || monitor == (IntPtr)PRIMARY_MONITOR)
{
// Single monitor system
//
bounds = SystemInformation.VirtualScreen;
primary = true;
deviceName = "DISPLAY";
}
else
{
// Multiple monitor system
var info = new NativeMethods.MONITORINFOEX();
SafeNativeMethods.GetMonitorInfo(new HandleRef(null, monitor), info);
bounds = Rectangle.FromLTRB(info.rcMonitor.left, info.rcMonitor.top, info.rcMonitor.right, info.rcMonitor.bottom);
primary = ((info.dwFlags & MONITORINFOF_PRIMARY) != 0);
deviceName = new string(info.szDevice);
deviceName = deviceName.TrimEnd((char)0);
if (hdc == IntPtr.Zero)
{
screenDC = UnsafeNativeMethods.CreateDC(deviceName);
}
}
hmonitor = monitor;
this.bitDepth = UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, screenDC), NativeMethods.BITSPIXEL);
this.bitDepth *= UnsafeNativeMethods.GetDeviceCaps(new HandleRef(null, screenDC), NativeMethods.PLANES);
if (hdc != screenDC)
{
UnsafeNativeMethods.DeleteDC(new HandleRef(null, screenDC));
}
}
protected override void Dispose(bool disposing)
{
Debug.Assert(disposing, "Never let a graphics buffer finalize!");
Debug.WriteLineIf(DoubleBuffering.TraceInfo, "Dispose(" + disposing + ") {");
Debug.Indent();
if (disposing && compatGraphics != null)
{
Debug.WriteLineIf(DoubleBuffering.TraceVerbose, "Disposing compatGraphics");
compatGraphics.Dispose();
compatGraphics = null;
}
if (oldBitmap != IntPtr.Zero && compatDC != IntPtr.Zero)
{
Debug.WriteLineIf(DoubleBuffering.TraceVerbose, "restoring bitmap to DC");
SafeNativeMethods.SelectObject(new HandleRef(this, compatDC), new HandleRef(this, oldBitmap));
oldBitmap = IntPtr.Zero;
}
if (compatDC != IntPtr.Zero)
{
Debug.WriteLineIf(DoubleBuffering.TraceVerbose, "delete compat DC");
UnsafeNativeMethods.DeleteDC(new HandleRef(this, compatDC));
compatDC = IntPtr.Zero;
}
if (dib != IntPtr.Zero)
{
Debug.WriteLineIf(DoubleBuffering.TraceVerbose, "delete dib");
SafeNativeMethods.DeleteObject(new HandleRef(this, dib));
dib = IntPtr.Zero;
}
bufferWidth = -1;
bufferHeight = -1;
virtualWidth = -1;
virtualHeight = -1;
Debug.Unindent();
Debug.WriteLineIf(DoubleBuffering.TraceInfo, "}");
}
