public HwndSource()
{
HwndSourceParameters parameters = new HwndSourceParameters
{
PositionX = UnmanagedMethods.CW_USEDEFAULT,
PositionY = UnmanagedMethods.CW_USEDEFAULT,
Width = UnmanagedMethods.CW_USEDEFAULT,
Height = UnmanagedMethods.CW_USEDEFAULT,
WindowStyle = (int)UnmanagedMethods.WindowStyles.WS_OVERLAPPEDWINDOW
};
this.Initialize(parameters);
}
public HwndSource()
{
HwndSourceParameters parameters = new HwndSourceParameters
{
PositionX = UnmanagedMethods.CW_USEDEFAULT,
PositionY = UnmanagedMethods.CW_USEDEFAULT,
Width = UnmanagedMethods.CW_USEDEFAULT,
Height = UnmanagedMethods.CW_USEDEFAULT,
WindowStyle = (int)UnmanagedMethods.WindowStyles.WS_OVERLAPPEDWINDOW
};
this.Initialize(parameters);
}
private void Initialize(HwndSourceParameters parameters)
{
// Ensure that the delegate doesn't get garbage collected by storing it as a field.
this.wndProcDelegate = new UnmanagedMethods.WndProc(this.WndProc);
this.className = Guid.NewGuid().ToString();
UnmanagedMethods.WNDCLASSEX wndClassEx = new UnmanagedMethods.WNDCLASSEX
{
cbSize = Marshal.SizeOf(typeof(UnmanagedMethods.WNDCLASSEX)),
style = parameters.WindowClassStyle,
lpfnWndProc = this.wndProcDelegate,
hInstance = Marshal.GetHINSTANCE(this.GetType().Module),
hCursor = UnmanagedMethods.LoadCursor(IntPtr.Zero, (int)UnmanagedMethods.Cursor.IDC_ARROW),
hbrBackground = (IntPtr)5,
lpszClassName = this.className,
};
ushort atom = UnmanagedMethods.RegisterClassEx(ref wndClassEx);
if (atom == 0)
{
throw new Win32Exception();
}
this.Handle = UnmanagedMethods.CreateWindowEx(
parameters.ExtendedWindowStyle,
atom,
parameters.WindowName,
parameters.WindowStyle,
parameters.PositionX,
parameters.PositionY,
parameters.Width,
parameters.Height,
parameters.ParentWindow,
IntPtr.Zero,
IntPtr.Zero,
IntPtr.Zero);
if (this.Handle == IntPtr.Zero)
{
throw new Win32Exception();
}
}
public override PlatformPresentationSource CreatePopupPresentationSource()
{
UnmanagedMethods.WindowStyles style =
UnmanagedMethods.WindowStyles.WS_POPUP;
UnmanagedMethods.WindowStyles extendedStyle =
UnmanagedMethods.WindowStyles.WS_EX_TOPMOST |
UnmanagedMethods.WindowStyles.WS_EX_TOOLWINDOW |
UnmanagedMethods.WindowStyles.WS_EX_NOACTIVATE;
HwndSourceParameters parameters = new HwndSourceParameters
{
WindowStyle = unchecked ((int)style),
ExtendedWindowStyle = unchecked ((int)extendedStyle),
PositionX = 500,
PositionY = 500,
Width = 200,
Height = 200,
};
return(new HwndSource(parameters));
}
public HwndSource(HwndSourceParameters parameters)
{
this.Initialize(parameters);
}
private void Initialize(HwndSourceParameters parameters)
{
// Ensure that the delegate doesn't get garbage collected by storing it as a field.
this.wndProcDelegate = new UnmanagedMethods.WndProc(this.WndProc);
this.className = Guid.NewGuid().ToString();
UnmanagedMethods.WNDCLASSEX wndClassEx = new UnmanagedMethods.WNDCLASSEX
{
cbSize = Marshal.SizeOf(typeof(UnmanagedMethods.WNDCLASSEX)),
style = parameters.WindowClassStyle,
lpfnWndProc = this.wndProcDelegate,
hInstance = Marshal.GetHINSTANCE(this.GetType().Module),
hCursor = UnmanagedMethods.LoadCursor(IntPtr.Zero, (int)UnmanagedMethods.Cursor.IDC_ARROW),
hbrBackground = (IntPtr)5,
lpszClassName = this.className,
};
ushort atom = UnmanagedMethods.RegisterClassEx(ref wndClassEx);
if (atom == 0)
{
throw new Win32Exception();
}
this.Handle = UnmanagedMethods.CreateWindowEx(
parameters.ExtendedWindowStyle,
atom,
parameters.WindowName,
parameters.WindowStyle,
parameters.PositionX,
parameters.PositionY,
parameters.Width,
parameters.Height,
parameters.ParentWindow,
IntPtr.Zero,
IntPtr.Zero,
IntPtr.Zero);
if (this.Handle == IntPtr.Zero)
{
throw new Win32Exception();
}
}
public override PlatformPresentationSource CreatePopupPresentationSource()
{
UnmanagedMethods.WindowStyles style =
UnmanagedMethods.WindowStyles.WS_POPUP;
UnmanagedMethods.WindowStyles extendedStyle =
UnmanagedMethods.WindowStyles.WS_EX_TOPMOST |
UnmanagedMethods.WindowStyles.WS_EX_TOOLWINDOW |
UnmanagedMethods.WindowStyles.WS_EX_NOACTIVATE;
HwndSourceParameters parameters = new HwndSourceParameters
{
WindowStyle = unchecked((int)style),
ExtendedWindowStyle = unchecked((int)extendedStyle),
PositionX = 500,
PositionY = 500,
Width = 200,
Height = 200,
};
return new HwndSource(parameters);
}
public HwndSource(HwndSourceParameters parameters)
{
this.Initialize(parameters);
}
