private static IntPtr ShellProc(int code, IntPtr wParam, IntPtr lParam)
{
if (code == PI.HSHELL_REDRAW)
{
try
{
if (_forms.TryGetValue(wParam, out Form f))
{
FlashEvent(f, (int)lParam == 1);
}
}
catch
{
//
}
}
return(PI.CallNextHookEx(_hHook, code, wParam, lParam));
}
/// <summary>
/// Process Windows-based messages.
/// </summary>
/// <param name="m">A Windows-based message.</param>
protected override void WndProc(ref Message m)
{
// We need to snoop the need to show a context menu
if (m.Msg == PI.WM_CONTEXTMENU)
{
// Only interested in overriding the behavior when we have a krypton context menu...
if (KryptonContextMenu != null)
{
// Extract the screen mouse position (if might not actually be provided)
Point mousePt = new Point(PI.LOWORD(m.LParam), PI.HIWORD(m.LParam));
// If keyboard activated, the menu position is centered
if (((int)((long)m.LParam)) == -1)
{
mousePt = new Point(Width / 2, Height / 2);
}
else
{
mousePt = PointToClient(mousePt);
// Mouse point up and left 1 pixel so that the mouse overlaps the top left corner
// of the showing context menu just like it happens for a ContextMenuStrip.
mousePt.X -= 1;
mousePt.Y -= 1;
}
// If the mouse posiiton is within our client area
if (ClientRectangle.Contains(mousePt))
{
// Show the context menu
KryptonContextMenu.Show(this, PointToScreen(mousePt));
// We eat the message!
return;
}
}
}
if (!IsDisposed)
{
base.WndProc(ref m);
}
}
private bool ProcessMouseMoveWithCMS(ref Message m)
{
if (_current == null)
{
return(false);
}
// Convert the client position to screen point
Point screenPt = CommonHelper.ClientMouseMessageToScreenPt(m);
// Convert from a class to a structure
PI.POINT screenPIPt = new PI.POINT
{
x = screenPt.X,
y = screenPt.Y
};
// Get the window handle of the window under this screen point
IntPtr hWnd = PI.WindowFromPoint(screenPIPt);
// Is the window handle that of the currently tracking popup
if (_current.Handle == hWnd)
{
return(true);
}
// Search all the stacked popups for any that match the window handle
VisualPopup[] popups = _stack.ToArray();
for (int i = 0; i < popups.Length; i++)
{
if (!popups[i].IsDisposed)
{
if (popups[i].Handle == hWnd)
{
return(true);
}
}
}
// Mouse move is not over a popup, so allow it
return(false);
}
static FlashWindowExListener()
{
int processId = PI.GetCurrentThreadId();
// create an instance of the delegate that
// won't be garbage collected to avoid:
// Managed Debugging Assistant 'CallbackOnCollectedDelegate' :**
// 'A callback was made on a garbage collected delegate of type
// 'WpfApp1!WpfApp1.MainWindow+NativeMethods+CBTProc::Invoke'.
// This may cause application crashes, corruption and data loss.
// When passing delegates to unmanaged code, they must be
// kept alive by the managed application until it is guaranteed
// that they will never be called.'
_hookProc = ShellProc;
// we are interested in listening to WH_SHELL events, mainly the HSHELL_REDRAW event.
_hHook = PI.SetWindowsHookEx(PI.WH_.SHELL, _hookProc, IntPtr.Zero, processId);
Application.ApplicationExit += delegate { PI.UnhookWindowsHookEx(_hHook); };
}
private bool ProcessNonClientMouseDown(ref Message m)
{
// Extract the x and y mouse position from message
Point screenPt = new Point(PI.LOWORD((int)m.LParam), PI.HIWORD((int)m.LParam));
// Ask the popup if this message causes the entire stack to be killed
if (_current.DoesCurrentMouseDownEndAllTracking(m, ScreenPtToClientPt(screenPt)))
{
EndAllTracking();
}
// Do any of the current popups want the mouse down to be eaten?
bool processed = false;
if (_current != null)
{
processed = _current.DoesMouseDownGetEaten(m, screenPt);
if (!processed)
{
// Search from end towards the front, the last entry is the most recent 'Push'
VisualPopup[] popups = _stack.ToArray();
for (int i = 0; i < popups.Length; i++)
{
// Ignore disposed popups
VisualPopup popup = popups[i];
if (!popup.IsDisposed)
{
processed = popup.DoesMouseDownGetEaten(m, screenPt);
if (processed)
{
break;
}
}
}
}
}
return(processed);
}
private static string InternalShow(IWin32Window owner,
string prompt,
string caption,
string defaultResponse)
{
IWin32Window showOwner = null;
// If do not have an owner passed in then get the active window and use that instead
if (owner == null)
{
showOwner = Control.FromHandle(PI.GetActiveWindow());
}
else
{
showOwner = owner;
}
// Show input box window as a modal dialog and then dispose of it afterwards
using (KryptonInputBox ib = new KryptonInputBox(prompt, caption, defaultResponse))
{
if (showOwner == null)
{
ib.StartPosition = FormStartPosition.CenterScreen;
}
else
{
ib.StartPosition = FormStartPosition.CenterParent;
}
if (ib.ShowDialog(showOwner) == DialogResult.OK)
{
return(ib.InputResponse);
}
else
{
return(string.Empty);
}
}
}
public virtual void Paint(RenderContext context)
{
Debug.Assert(context != null);
Debug.Assert(Root != null);
// Validate incoming reference
if (context == null)
{
throw new ArgumentNullException("context");
}
// Do nothing if the control is disposed or inside a layout call
if (!_control.IsDisposed)
{
if (_outputDebug)
{
PI.QueryPerformanceCounter(ref _outputStart);
}
// Ask the view to paint itself
Root.Render(context);
if (_outputDebug)
{
long outputEnd = 0;
PI.QueryPerformanceCounter(ref outputEnd);
long outputDiff = outputEnd - _outputStart;
Console.WriteLine("Id:{0} Paint Type:{1} Elapsed: {2}",
Id,
_control.GetType().ToString(),
outputDiff.ToString());
}
}
// Maintain internal counters for measuring perf
_paintCounter++;
}
/// <summary>
/// Should a mouse down at the provided point cause an end to popup tracking.
/// </summary>
/// <param name="m">Original message.</param>
/// <param name="pt">Client coordinates point.</param>
/// <returns>True to end tracking; otherwise false.</returns>
public virtual bool DoesCurrentMouseDownEndAllTracking(Message m, Point pt)
{
bool endTracking = !ClientRectangle.Contains(pt);
// The mouse is not over our client area but the focus is
if (endTracking && ContainsFocus)
{
// Get the window handle of the window under this screen point
Point screenPt = PointToScreen(pt);
PI.POINT screenPIPt = new PI.POINT
{
X = screenPt.X,
Y = screenPt.Y
};
IntPtr hWnd = PI.WindowFromPoint(screenPIPt);
// Assuming we got back a valid window handle
if (hWnd != IntPtr.Zero)
{
StringBuilder className = new StringBuilder(256);
int length = PI.GetClassName(hWnd, className, className.Capacity);
// If we got back a valid name
if (length > 0)
{
// If let the message occur as it is being pressed on a combo box
// drop down list and so it will process the message appropriately
if (className.ToString() == "ComboLBox")
{
endTracking = false;
}
}
}
}
return(endTracking);
}
public bool PreFilterMessage(ref Message m)
{
// If we have suspended operation....
if (_suspended > 0)
{
// Intercept the non-client mouse move to prevent the custom
// chrome of the form from providing hot tracking feedback
if (m.Msg == PI.WM_NCMOUSEMOVE)
{
return(true);
}
// A mouse move can occur because a context menu is showing with a popup also
// already showing. We suppress the mouse move to prevent tracking of the popup
if (m.Msg == PI.WM_MOUSEMOVE)
{
return(ProcessMouseMoveWithCMS(ref m));
}
return(false);
}
if (_current != null)
{
// If the popup has been become disposed
if (_current.IsDisposed)
{
EndCurrentTracking();
return(false);
}
else
{
// Get the active window
IntPtr activeWindow = PI.GetActiveWindow();
// Is there a change in active window?
if (activeWindow != _activeWindow)
{
// If the current window has become active, ask popup if that is allowed
if ((activeWindow == _current.Handle) && _current.AllowBecomeActiveWhenCurrent)
{
_activeWindow = _current.Handle;
}
else
{
bool focus = _current.ContainsFocus;
if (!focus)
{
VisualPopup[] popups = _stack.ToArray();
// For from last to first for any popup that has the focus
for (int i = popups.Length - 1; i >= 0; i--)
{
if (!popups[i].IsDisposed)
{
if (popups[i].ContainsFocus)
{
focus = true;
break;
}
}
}
}
// If the change in active window (focus) is not to the current
// or a stacked popup then we need to pull down the entire stack
// as focus has been shifted away from the use of any popup.
if (!focus)
{
EndAllTracking();
return(false);
}
}
}
}
// We only intercept and handle keyboard and mouse messages
if (!IsKeyOrMouseMessage(ref m))
{
return(false);
}
switch (m.Msg)
{
case PI.WM_KEYDOWN:
case PI.WM_SYSKEYDOWN:
// If the popup is telling us to redirect keyboard to itself
if (!_current.KeyboardInert)
{
// If the focus is not inside the actual current tracking popup
// then we need to manually translate the message to ensure that
// KeyPress events occur for the current popup.
if (!_current.ContainsFocus)
{
PI.MSG msg = new PI.MSG
{
hwnd = m.HWnd,
message = m.Msg,
lParam = m.LParam,
wParam = m.WParam
};
PI.TranslateMessage(ref msg);
}
return(ProcessKeyboard(ref m));
}
break;
case PI.WM_CHAR:
case PI.WM_KEYUP:
case PI.WM_DEADCHAR:
case PI.WM_SYSCHAR:
case PI.WM_SYSKEYUP:
case PI.WM_SYSDEADCHAR:
// If the popup is telling us to redirect keyboard to itself
if (!_current.KeyboardInert)
{
return(ProcessKeyboard(ref m));
}
break;
case PI.WM_MOUSEMOVE:
case PI.WM_NCMOUSEMOVE:
return(ProcessMouseMove(ref m));
case PI.WM_LBUTTONDOWN:
case PI.WM_RBUTTONDOWN:
case PI.WM_MBUTTONDOWN:
return(ProcessClientMouseDown(ref m));
case PI.WM_NCLBUTTONDOWN:
case PI.WM_NCRBUTTONDOWN:
case PI.WM_NCMBUTTONDOWN:
return(ProcessNonClientMouseDown(ref m));
}
}
return(false);
}
/// <summary>
/// Show the window without taking activation.
/// </summary>
public void ShowWithoutActivate()
{
// Show the window without activating it (i.e. do not take focus)
PI.ShowWindow(this.Handle, (short)PI.SW_SHOWNOACTIVATE);
}
internal static extern bool EndPaint(IntPtr hwnd, ref PI.PAINTSTRUCT ps);
public DialogResult ShowDialog()
{
return(ShowDialog(Control.FromHandle(PI.GetActiveWindow())));
}
/// <summary>
/// Draw text with a glowing background, for use on a composition element.
/// </summary>
/// <param name="g">Graphics reference.</param>
/// <param name="text">Text to be drawn.</param>
/// <param name="font">Font to use for text.</param>
/// <param name="bounds">Bounding area for the text.</param>
/// <param name="state">State of the source element.</param>
/// <param name="color">Color of the text.</param>
/// <param name="copyBackground">Should existing background be copied into the bitmap.</param>
public static void DrawCompositionGlowingText(Graphics g,
string text,
Font font,
Rectangle bounds,
PaletteState state,
Color color,
bool copyBackground)
{
try
{
// Get the hDC for the graphics instance and create a memory DC
IntPtr gDC = g.GetHdc();
IntPtr mDC = PI.CreateCompatibleDC(gDC);
PI.BITMAPINFO bmi = new PI.BITMAPINFO();
bmi.biSize = Marshal.SizeOf(bmi);
bmi.biWidth = bounds.Width;
bmi.biHeight = -(bounds.Height + GLOW_EXTRA_HEIGHT * 2);
bmi.biCompression = 0;
bmi.biBitCount = 32;
bmi.biPlanes = 1;
// Create a device independant bitmp and select into the memory DC
IntPtr hDIB = PI.CreateDIBSection(gDC, bmi, 0, 0, IntPtr.Zero, 0);
PI.SelectObject(mDC, hDIB);
if (copyBackground)
{
// Copy existing background into the bitmap
PI.BitBlt(mDC, 0, 0, bounds.Width, bounds.Height + GLOW_EXTRA_HEIGHT * 2,
gDC, bounds.X, bounds.Y - GLOW_EXTRA_HEIGHT, 0x00CC0020);
}
// Select the font for use when drawing
IntPtr hFont = font.ToHfont();
PI.SelectObject(mDC, hFont);
// Get renderer for the correct state
VisualStyleRenderer renderer = new VisualStyleRenderer(state == PaletteState.Normal ? VisualStyleElement.Window.Caption.Active :
VisualStyleElement.Window.Caption.Inactive);
// Create structures needed for theme drawing call
PI.RECT textBounds = new PI.RECT();
textBounds.left = 0;
textBounds.top = 0;
textBounds.right = (bounds.Right - bounds.Left);
textBounds.bottom = (bounds.Bottom - bounds.Top) + (GLOW_EXTRA_HEIGHT * 2);
PI.DTTOPTS dttOpts = new PI.DTTOPTS();
dttOpts.dwSize = Marshal.SizeOf(typeof(PI.DTTOPTS));
dttOpts.dwFlags = PI.DTT_COMPOSITED | PI.DTT_GLOWSIZE | PI.DTT_TEXTCOLOR;
dttOpts.crText = ColorTranslator.ToWin32(color);
dttOpts.iGlowSize = 11;
// Always draw text centered
TextFormatFlags textFormat = TextFormatFlags.SingleLine |
TextFormatFlags.HorizontalCenter |
TextFormatFlags.VerticalCenter |
TextFormatFlags.EndEllipsis;
// Perform actual drawing
PI.DrawThemeTextEx(renderer.Handle,
mDC, 0, 0,
text, -1, (int)textFormat,
ref textBounds, ref dttOpts);
// Copy to foreground
PI.BitBlt(gDC,
bounds.Left, bounds.Top - GLOW_EXTRA_HEIGHT,
bounds.Width, bounds.Height + (GLOW_EXTRA_HEIGHT * 2),
mDC, 0, 0, 0x00CC0020);
// Dispose of allocated objects
PI.DeleteObject(hFont);
PI.DeleteObject(hDIB);
PI.DeleteDC(mDC);
// Must remember to release the hDC
g.ReleaseHdc(gDC);
}
catch
{
}
}
public WindowStylesHelper(IntPtr handle)
{
WinStyle = PI.GetWindowLong(handle, PI.GWL_.STYLE);
WinExStyle = PI.GetWindowLong(handle, PI.GWL_.EXSTYLE);
}
internal static extern IntPtr WindowFromPoint(PI.POINT pt);
internal static extern bool RedrawWindow(IntPtr hWnd, ref PI.RECT rectUpdate, IntPtr hRgnUpdate, uint uFlags);
void ForwardMessage(IWin32Window control, ref Message m)
{
PI.SendMessage(control.Handle, m.Msg, m.WParam, m.LParam);
}
protected override void OnPaint(PaintEventArgs e)
{
var outerBounds = new Rectangle(0, 0, Width, Height);
using (var target = new Bitmap(outerBounds.Width, outerBounds.Height, PixelFormat.Format32bppArgb))
{
using (var targetGraphics = Graphics.FromImage(target))
{
// The top and bottom borders extend over the sides of the window.
// The left and right borders do no. This means that we need to
// update the bounds to make it seem like the left and right
// borders do extend outside of the window.
if (Border == DropShadowBorder.Left || Border == DropShadowBorder.Right)
{
outerBounds = new Rectangle(
outerBounds.Left,
outerBounds.Top - _borderWidth,
outerBounds.Width,
outerBounds.Height + _borderWidth * 2
);
}
if (Border == DropShadowBorder.Left || Border == DropShadowBorder.Top)
{
DrawImage(targetGraphics, _imageCache.CornerNW,
new Point(outerBounds.Left, outerBounds.Top)
);
}
if (Border == DropShadowBorder.Right || Border == DropShadowBorder.Top)
{
DrawImage(targetGraphics, _imageCache.CornerNE,
new Point(outerBounds.Right - _cornerSize, outerBounds.Top)
);
}
if (Border == DropShadowBorder.Bottom || Border == DropShadowBorder.Left)
{
DrawImage(targetGraphics, _imageCache.CornerSW,
new Point(outerBounds.Left, outerBounds.Bottom - _cornerSize)
);
}
if (Border == DropShadowBorder.Bottom || Border == DropShadowBorder.Right)
{
DrawImage(targetGraphics, _imageCache.CornerSE,
new Point(outerBounds.Right - _cornerSize, outerBounds.Bottom - _cornerSize)
);
}
if (Border == DropShadowBorder.Top)
{
DrawBorder(targetGraphics, _imageCache.BorderN,
new Rectangle(
outerBounds.Left + _cornerSize,
outerBounds.Top,
outerBounds.Width - _cornerSize * 2,
_borderWidth
)
);
}
if (Border == DropShadowBorder.Bottom)
{
DrawBorder(targetGraphics, _imageCache.BorderS,
new Rectangle(
outerBounds.Left + _cornerSize,
outerBounds.Bottom - _borderWidth,
outerBounds.Width - _cornerSize * 2,
_borderWidth
)
);
}
if (Border == DropShadowBorder.Left)
{
DrawBorder(targetGraphics, _imageCache.BorderW,
new Rectangle(
outerBounds.Left,
outerBounds.Top + _cornerSize,
_borderWidth,
outerBounds.Height - _cornerSize * 2
)
);
}
if (Border == DropShadowBorder.Right)
{
DrawBorder(targetGraphics, _imageCache.BorderE,
new Rectangle(
outerBounds.Right - _borderWidth,
outerBounds.Top + _cornerSize,
_borderWidth,
outerBounds.Height - _cornerSize * 2
)
);
}
}
// Get device contexts
var screenDc = PI.GetDC(IntPtr.Zero);
var memDc = PI.CreateCompatibleDC(screenDc);
var hBitmap = IntPtr.Zero;
var hOldBitmap = IntPtr.Zero;
try
{
// Get handle to the new bitmap and select it into the current device context
hBitmap = target.GetHbitmap(Color.FromArgb(0));
hOldBitmap = PI.SelectObject(memDc, hBitmap); // Set parameters for layered window update
var newSize = new PI.SIZE(target.Size); // Size window to match bitmap
var sourceLocation = new PI.POINT(Point.Empty);
var newLocation = new PI.POINT(Location); // Same as this window
var blend = new PI.BLENDFUNCTION
{
BlendOp = PI.AC_SRC_OVER, // Only works with a 32bpp bitmap
BlendFlags = 0, // Always 0
SourceConstantAlpha = 255, // Set to 255 for per-pixel alpha values
AlphaFormat = PI.AC_SRC_ALPHA // Only works when the bitmap contains an alpha channel
};
// Update the window
PI.UpdateLayeredWindow(
Handle, screenDc, ref newLocation, ref newSize,
memDc, ref sourceLocation, 0, ref blend,
PI.ULW_ALPHA
);
}
finally
{
// Release device context
PI.ReleaseDC(IntPtr.Zero, screenDc);
if (hBitmap != IntPtr.Zero)
{
PI.SelectObject(memDc, hOldBitmap);
PI.DeleteObject(hBitmap); // Remove bitmap resources
}
PI.DeleteDC(memDc);
}
}
}
/// <summary>
/// Draw text without a glowing background, for use on a composition element.
/// </summary>
/// <param name="g">Graphics reference.</param>
/// <param name="text">Text to be drawn.</param>
/// <param name="font">Font to use for text.</param>
/// <param name="bounds">Bounding area for the text.</param>
/// <param name="state">State of the source element.</param>
/// <param name="color"><see cref="Color"/> of the text.</param>
/// <param name="copyBackground">Should existing background be copied into the bitmap.</param>
/// <param name="sf">StringFormat of the memento.</param>
public static void DrawCompositionText(Graphics g,
string text,
Font font,
Rectangle bounds,
PaletteState state,
Color color,
bool copyBackground,
StringFormat sf)
{
// Get the hDC for the graphics instance and create a memory DC
IntPtr gDC = g.GetHdc();
try
{
IntPtr mDC = PI.CreateCompatibleDC(gDC);
PI.BITMAPINFO bmi = new PI.BITMAPINFO
{
biWidth = bounds.Width,
biHeight = -(bounds.Height),
biCompression = 0,
biBitCount = 32,
biPlanes = 1
};
bmi.biSize = (uint)Marshal.SizeOf(bmi);
// Create a device independent bitmap and select into the memory DC
IntPtr hDIB = PI.CreateDIBSection(gDC, ref bmi, 0, out _, IntPtr.Zero, 0);
PI.SelectObject(mDC, hDIB);
if (copyBackground)
{
// Copy existing background into the bitmap
PI.BitBlt(mDC, 0, 0, bounds.Width, bounds.Height,
gDC, bounds.X, bounds.Y, 0x00CC0020);
}
// Select the font for use when drawing
IntPtr hFont = font.ToHfont();
PI.SelectObject(mDC, hFont);
// Get renderer for the correct state
VisualStyleRenderer renderer = new VisualStyleRenderer(state == PaletteState.Normal ? VisualStyleElement.Window.Caption.Active :
VisualStyleElement.Window.Caption.Inactive);
// Create structures needed for theme drawing call
PI.RECT textBounds = new PI.RECT
{
left = 0,
top = 0,
right = (bounds.Right - bounds.Left),
bottom = (bounds.Bottom - bounds.Top)
};
PI.DTTOPTS dttOpts = new PI.DTTOPTS
{
dwSize = Marshal.SizeOf(typeof(PI.DTTOPTS)),
dwFlags = PI.DTT_COMPOSITED | PI.DTT_TEXTCOLOR,
crText = ColorTranslator.ToWin32(color)
};
// Always draw text centered
TextFormatFlags textFormat = TextFormatFlags.SingleLine |
TextFormatFlags.HorizontalCenter |
TextFormatFlags.VerticalCenter;
////Seb | TextFormatFlags.EndEllipsis;
// Perform actual drawing
//PI.DrawThemeTextEx(renderer.Handle,
// mDC, 0, 0,
// text, -1, (int)StringFormatToFlags(sf),
// ref textBounds, ref dttOpts);
PI.DrawThemeTextEx(renderer.Handle,
mDC, 0, 0,
text, -1, (int)textFormat,
ref textBounds, ref dttOpts);
// Copy to foreground
PI.BitBlt(gDC,
bounds.Left, bounds.Top,
bounds.Width, bounds.Height,
mDC, 0, 0, 0x00CC0020);
// Dispose of allocated objects
PI.DeleteObject(hFont);
PI.DeleteObject(hDIB);
PI.DeleteDC(mDC);
}
catch
{
// ignored
}
finally
{
// Must remember to release the hDC
g.ReleaseHdc(gDC);
}
}
internal static extern IntPtr BeginPaint(IntPtr hwnd, ref PI.PAINTSTRUCT ps);
