static public void ChangeProtection(IntPtr hWnd)
{
try
{
if (NativeCode.IsWindow(hWnd))
{
if (dwmDisabled == false)
{
if ((int)NativeCode.GetProp(hWnd, "protect_affinity") == 1)
{
if (IsDWMEnabled() == false)
{
if ((int)NativeCode.GetProp(hWnd, "protect_change") == 0) //Make sure that we try it only once!
{
NativeCode.SetProp(hWnd, "protect_change", (IntPtr)1); //Prop gets never removed, but who cares...
UnProtect(hWnd);
Protect(hWnd);
}
}
}
}
}
}
catch (System.Exception ex)
{
LogFile.Error("exception in ChangeProtection():", ex);
}
}
static public void UnProtect(IntPtr hWnd)
{
if (NativeCode.IsWindow(hWnd))
{
try
{
if ((int)NativeCode.GetProp(hWnd, "protect_affinity") == 1)
{
NativeCode.SetWindowDisplayAffinity(hWnd, 0);
NativeCode.RemoveProp(hWnd, "protect_affinity");
}
}
catch (System.Exception ex)
{
LogFile.Error("exception in UnProtect() while removing affinity:", ex);
}
try
{
if ((int)NativeCode.GetProp(hWnd, "protect_layer_added") == 1)
{
NativeCode.SetWindowLong(hWnd, NativeCode.GWL_EXSTYLE, NativeCode.GetWindowLong(hWnd, NativeCode.GWL_EXSTYLE) & (~NativeCode.WS_EX_LAYERED));
NativeCode.RemoveProp(hWnd, "protect_layer_added");
}
}
catch (System.Exception ex)
{
LogFile.Error("exception in UnProtect() while removing layered attribute:", ex);
}
try
{
if ((int)NativeCode.GetProp(hWnd, "protect_mag") == 1)
{
if (NativeCode.IsWindow(NativeCode.GetProp(hWnd, "protect_mag_hwnd")))
{
NativeCode.DestroyWindow(NativeCode.GetProp(hWnd, "protect_mag_hwnd"));
}
NativeCode.RemoveProp(hWnd, "protect_mag");
NativeCode.RemoveProp(hWnd, "protect_mag_hwnd");
}
}
catch (System.Exception ex)
{
LogFile.Error("exception in UnProtect() while removing magnification component:", ex);
}
}
else
{
LogFile.Error("no vailid window handle forwarded to UnProtect()");
}
}
public void SetPlacement(int windowTop, int windowLeft, int windowWidth, int windowHeight, bool windowActivate)
{
if ((windowWidth != 0) && (windowHeight != 0))
{
this.Size = new Size(windowWidth, windowHeight);
this.Location = new Point(windowLeft, windowTop);
NativeCode.ShowWindow(this.Handle, NativeCode.SW_RESTORE);
}
if (windowActivate)
{
NativeCode.SetForegroundWindow(this.Handle);
NativeCode.AllowSetForegroundWindow(NativeCode.ASFW_ANY);
}
}
private void LoadXpsFromPipe(string pipeName)
{
int sz = (int)Program.PipeSize;
if (sz <= 0)
{
throw new ArgumentException("Invalid pipe size " + Program.PipeSize.ToString());
}
SafeFileHandle pipeHandle = NativeCode.CreateFile(pipeName, NativeCode.GENERIC_READ, 0, IntPtr.Zero, NativeCode.OPEN_EXISTING, 0, IntPtr.Zero);
if (pipeHandle.IsInvalid)
{
throw new IOException("pipe cannot be opened!");
}
FileStream fStream = new FileStream(pipeHandle, FileAccess.Read, 4096, false);
//we must copy it to a memorystream, oterwise it does not work! (Length cannot be evaluated!)
MemoryStream fMem = new MemoryStream(); //FileStream fMem = new FileStream(@"D:\test.out", FileMode.Create, FileAccess.Write, FileShare.ReadWrite, 1000, FileOptions.None);
byte[] arr = new byte[sz];
int offset = 0;
int remaining = sz;
int read = 0;
int start = Environment.TickCount;
while (remaining > 0)
{
read = fStream.Read(arr, offset, remaining); //Should we terminate when read returns 0 (end of stream)
if (read > 0)
{
start = Environment.TickCount; // reset timer
}
else
{
if (Environment.TickCount > 25000) //Seit 10 sekunden konnte nichts gelesen werden -> abbrechen
{
LogFile.Error("Read timout reached, aborting...");
break;
}
}
LogFile.Debug("read " + read.ToString() + " bytes from pipe");
offset += read;
remaining -= read;
}
fMem.Write(arr, 0, sz);
fStream.Close();
LoadXpsFromStream(fMem, @"pack://xpsstream.xps/");
}
static public bool IsDWMEnabled()
{
bool dwmEnabled = false;
try
{
NativeCode.DwmIsCompositionEnabled(out dwmEnabled);
}
catch (System.Exception ex)
{
//Windows XP...
dwmEnabled = false;
LogFile.Error("exception in IsDWMEnabled():", ex);
}
return(dwmEnabled);
}
static public void Init()
{
try
{
NativeCode.RegisterHotKey(IntPtr.Zero, NativeCode.IDHOT_SNAPDESKTOP, 0, NativeCode.VK_SNAPSHOT);
NativeCode.RegisterHotKey(IntPtr.Zero, NativeCode.IDHOT_SNAPWINDOW, NativeCode.MOD_ALT, NativeCode.VK_SNAPSHOT);
NativeCode.RegisterHotKey(IntPtr.Zero, 0xC000, NativeCode.MOD_ALT | NativeCode.MOD_CONTROL, NativeCode.VK_SNAPSHOT);
NativeCode.RegisterHotKey(IntPtr.Zero, 0xB000, NativeCode.MOD_CONTROL, NativeCode.VK_SNAPSHOT);
}
catch (System.Exception ex)
{
LogFile.Error("exception in Init() while registering hotkeys:", ex);
}
try
{
magInit = NativeCode.MagInitialize();
}
catch (System.Exception ex)
{
LogFile.Error("exception in Init() while initializing magnification component:", ex);
}
}
static public void Free()
{
try
{
if (dwmDisabled)
{
NativeCode.DwmEnableComposition(NativeCode.DWM_EC_ENABLECOMPOSITION);
dwmDisabled = false;
}
}
catch (System.Exception ex)
{
LogFile.Error("exception in Free() while enabling DWM:", ex);
}
try
{
NativeCode.UnregisterHotKey(IntPtr.Zero, NativeCode.IDHOT_SNAPDESKTOP);
NativeCode.UnregisterHotKey(IntPtr.Zero, NativeCode.IDHOT_SNAPWINDOW);
NativeCode.UnregisterHotKey(IntPtr.Zero, 0xB000);
NativeCode.UnregisterHotKey(IntPtr.Zero, 0xC000);
}
catch (System.Exception ex)
{
LogFile.Error("exception in Free() while unregistering hotkey:", ex);
}
try
{
NativeCode.MagUninitialize();
magInit = false;
}
catch (System.Exception ex)
{
LogFile.Error("exception in Free() while uninitalizing magnification component:", ex);
}
}
public void ToggleFullscreen()
{
if (isFullscreen)
{
try
{
if (Program.IsProtected)
{
//Protected window cannot set style with FormBorderStyle.Sizable, because this seems to remove layered style!
NativeCode.SetWindowLong(this.Handle, NativeCode.GWL_STYLE, NativeCode.WS_VISIBLE | NativeCode.WS_OVERLAPPEDWINDOW | NativeCode.WS_MAXIMIZE);
NativeCode.ShowWindow(this.Handle, NativeCode.SW_SHOWNORMAL);
//this.WindowState = lastState;
this.Invalidate();
this.Refresh();
//NativeCode.RedrawWindow(this.Handle, IntPtr.Zero, IntPtr.Zero, NativeCode.RDW_FRAME | NativeCode.RDW_UPDATENOW | NativeCode.RDW_INVALIDATE);
//NativeCode.UpdateWindow(this.Handle);
isFullscreen = false;
}
else
{
this.FormBorderStyle = FormBorderStyle.Sizable;
this.WindowState = lastState;
isFullscreen = false;
}
}
catch (System.Exception ex)
{
LogFile.Error("Error in ToggleScreen() 1", ex);
}
}
else
{
try
{
if (Program.IsProtected)
{
//Protected window cannot set style with FormBorderStyle.Sizable, because this seems to remove layered style!
NativeCode.SetWindowLong(this.Handle, NativeCode.GWL_STYLE, NativeCode.WS_VISIBLE | NativeCode.WS_POPUP);
NativeCode.ShowWindow(this.Handle, NativeCode.SW_SHOWNORMAL); //Makes sure that the taskbar is not visible!
NativeCode.ShowWindow(this.Handle, NativeCode.SW_SHOWMAXIMIZED);
this.Invalidate();
this.Refresh();
//NativeCode.RedrawWindow(this.Handle, IntPtr.Zero, IntPtr.Zero, NativeCode.RDW_FRAME | NativeCode.RDW_UPDATENOW | NativeCode.RDW_INVALIDATE);
//NativeCode.UpdateWindow(this.Handle);
isFullscreen = true;
}
else
{
lastState = this.WindowState;
this.FormBorderStyle = FormBorderStyle.None;
this.WindowState = FormWindowState.Normal;//Makes sure that the taskbar is not visible!
this.WindowState = FormWindowState.Maximized;
isFullscreen = true;
}
}
catch (System.Exception ex)
{
LogFile.Error("Error in ToggleScreen() 2", ex);
}
}
}
static public void Protect(IntPtr hWnd)
{
bool isProtected = false;
if (NativeCode.IsWindow(hWnd))
{
if (IsDWMEnabled())
{
try
{
isProtected = NativeCode.SetWindowDisplayAffinity(hWnd, NativeCode.WDA_MONITOR);
if (isProtected)
{
NativeCode.SetProp(hWnd, "protect_affinity", (IntPtr)1);
}
}
catch (System.Exception ex)
{
//Possibly Windows Vista
LogFile.Warn("exception in Protect() while setting affinity:" + ex.Message);
}
}
if (isProtected == false)
{
try
{
//Disable DWM, that it cannot be enabled while the application is running
NativeCode.DwmEnableComposition(NativeCode.DWM_EC_DISABLECOMPOSITION);
dwmDisabled = true;
}
catch (System.Exception ex)
{
//Possibly Windows XP...
LogFile.Warn("exception in Protect() while disabling DWM:" + ex.Message);
}
try
{
if ((NativeCode.GetWindowLong(hWnd, NativeCode.GWL_EXSTYLE) & NativeCode.WS_EX_LAYERED) == 0)
{
NativeCode.SetProp(hWnd, "protect_layer_added", (IntPtr)1);
}
NativeCode.SetWindowLong(hWnd, NativeCode.GWL_EXSTYLE, NativeCode.GetWindowLong(hWnd, NativeCode.GWL_EXSTYLE) | NativeCode.WS_EX_LAYERED);
NativeCode.SetLayeredWindowAttributes(hWnd, 0, 255, NativeCode.LWA_ALPHA);
}
catch (System.Exception ex)
{
LogFile.Error("exception in Protect() while setting layered window:", ex);
}
try
{
if (magInit)
{
IntPtr magWnd = NativeCode.CreateWindow(0, NativeCode.WC_MAGNIFIER, "", NativeCode.WS_CHILD, 0, 0, 1, 1, hWnd, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
NativeCode.SetProp(hWnd, "protect_mag", (IntPtr)1);
NativeCode.SetProp(hWnd, "protect_mag_hwnd", magWnd);
}
}
catch (System.Exception ex)
{
LogFile.Error("exception in Protect() while creating maginification window:", ex);
}
try
{
NativeCode.RedrawWindow(hWnd, IntPtr.Zero, IntPtr.Zero, NativeCode.RDW_FRAME | NativeCode.RDW_UPDATENOW | NativeCode.RDW_INVALIDATE);
NativeCode.UpdateWindow(hWnd);
}
catch (System.Exception ex)
{
LogFile.Error("exception in Protect() while refreshing window:", ex);
}
}
}
else
{
LogFile.Error("no vailid window handle forwarded to Protect()");
}
}