moel@202: /*
moel@344:
moel@344: This Source Code Form is subject to the terms of the Mozilla Public
moel@344: License, v. 2.0. If a copy of the MPL was not distributed with this
moel@344: file, You can obtain one at http://mozilla.org/MPL/2.0/.
moel@344:
moel@344: Copyright (C) 2010-2011 Michael Möller <mmoeller@openhardwaremonitor.org>
moel@344: Copyright (C) 2010 Paul Werelds <paul@werelds.net>
moel@176:
moel@176: */
moel@176:
moel@176: using System;
moel@176: using System.Drawing;
moel@302: using System.Drawing.Drawing2D;
moel@302: using System.Drawing.Text;
moel@176: using System.Reflection;
moel@176: using System.Runtime.InteropServices;
moel@176: using System.Windows.Forms;
moel@176:
moel@176: namespace OpenHardwareMonitor.GUI {
moel@183:
moel@302: public class GadgetWindow : NativeWindow, IDisposable {
moel@176:
moel@176: private bool visible = false;
moel@183: private bool lockPositionAndSize = false;
moel@176: private bool alwaysOnTop = false;
moel@176: private byte opacity = 255;
moel@176: private Point location = new Point(100, 100);
moel@176: private Size size = new Size(130, 84);
moel@176: private ContextMenu contextMenu = null;
moel@176: private MethodInfo commandDispatch;
moel@302: private IntPtr handleBitmapDC;
moel@302: private Size bufferSize;
moel@302: private Graphics graphics;
moel@176:
moel@176: public GadgetWindow() {
moel@176: Type commandType =
moel@176: typeof(Form).Assembly.GetType("System.Windows.Forms.Command");
moel@176: commandDispatch = commandType.GetMethod("DispatchID",
moel@176: BindingFlags.Static | BindingFlags.NonPublic | BindingFlags.Public,
moel@176: null, new Type[]{ typeof(int) }, null);
moel@176:
moel@176: this.CreateHandle(CreateParams);
moel@176:
moel@176: // move window to the bottom
moel@176: MoveToBottom(Handle);
moel@176:
moel@176: // prevent window from fading to a glass sheet when peek is invoked
moel@176: try {
moel@176: bool value = true;
moel@202: NativeMethods.DwmSetWindowAttribute(Handle,
moel@176: WindowAttribute.DWMWA_EXCLUDED_FROM_PEEK, ref value,
moel@176: Marshal.SizeOf(value));
moel@176: } catch (DllNotFoundException) { } catch (EntryPointNotFoundException) { }
moel@302:
moel@302: CreateBuffer();
moel@176: }
moel@176:
moel@176: private void ShowDesktopChanged(bool showDesktop) {
moel@176: if (showDesktop) {
moel@176: MoveToTopMost(Handle);
moel@176: } else {
moel@176: MoveToBottom(Handle);
moel@176: }
moel@176: }
moel@176:
moel@176: private void MoveToBottom(IntPtr handle) {
moel@176: NativeMethods.SetWindowPos(handle, HWND_BOTTOM, 0, 0, 0, 0,
moel@176: SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE | SWP_NOSENDCHANGING);
moel@176: }
moel@176:
moel@176: private void MoveToTopMost(IntPtr handle) {
moel@176: NativeMethods.SetWindowPos(handle, HWND_TOPMOST, 0, 0, 0, 0,
moel@176: SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE | SWP_NOSENDCHANGING);
moel@176: }
moel@176:
moel@176: private void ShowContextMenu(Point position) {
moel@176: NativeMethods.TrackPopupMenuEx(contextMenu.Handle,
moel@176: TPM_RIGHTBUTTON | TPM_VERTICAL, position.X,
moel@176: position.Y, Handle, IntPtr.Zero);
moel@176: }
moel@176:
moel@176: protected virtual CreateParams CreateParams {
moel@176: get {
moel@183: CreateParams cp = new CreateParams();
moel@183: cp.Width = 4096;
moel@183: cp.Height = 4096;
moel@176: cp.X = location.X;
moel@176: cp.Y = location.Y;
moel@176: cp.ExStyle = WS_EX_LAYERED | WS_EX_TOOLWINDOW;
moel@176: return cp;
moel@176: }
moel@176: }
moel@176:
moel@176: protected override void WndProc(ref Message message) {
moel@176: switch (message.Msg) {
moel@183: case WM_COMMAND: {
moel@183: // need to dispatch the message for the context menu
moel@183: if (message.LParam == IntPtr.Zero)
moel@183: commandDispatch.Invoke(null, new object[] {
moel@183: message.WParam.ToInt32() & 0xFFFF });
moel@183: } break;
moel@183: case WM_NCHITTEST: {
moel@183: message.Result = (IntPtr)HitResult.Caption;
moel@183: if (HitTest != null) {
moel@183: Point p = new Point(
paulwerelds@208: Macros.GET_X_LPARAM(message.LParam) - location.X,
paulwerelds@208: Macros.GET_Y_LPARAM(message.LParam) - location.Y
paulwerelds@208: );
moel@183: HitTestEventArgs e = new HitTestEventArgs(p, HitResult.Caption);
moel@183: HitTest(this, e);
moel@183: message.Result = (IntPtr)e.HitResult;
moel@183: }
moel@183: } break;
moel@183: case WM_NCLBUTTONDBLCLK: {
moel@244: if (MouseDoubleClick != null) {
moel@244: MouseDoubleClick(this, new MouseEventArgs(MouseButtons.Left, 2,
moel@244: Macros.GET_X_LPARAM(message.LParam) - location.X,
moel@244: Macros.GET_Y_LPARAM(message.LParam) - location.Y, 0));
moel@244: }
moel@183: message.Result = IntPtr.Zero;
moel@183: } break;
moel@183: case WM_NCRBUTTONDOWN: {
moel@183: message.Result = IntPtr.Zero;
moel@183: } break;
moel@183: case WM_NCRBUTTONUP: {
moel@183: if (contextMenu != null)
moel@183: ShowContextMenu(new Point(
paulwerelds@209: Macros.GET_X_LPARAM(message.LParam),
paulwerelds@209: Macros.GET_Y_LPARAM(message.LParam)
paulwerelds@209: ));
moel@183: message.Result = IntPtr.Zero;
moel@183: } break;
moel@183: case WM_WINDOWPOSCHANGING: {
moel@183: WindowPos wp = (WindowPos)Marshal.PtrToStructure(
moel@183: message.LParam, typeof(WindowPos));
moel@183:
moel@183: if (!lockPositionAndSize) {
moel@183: // prevent the window from leaving the screen
moel@183: if ((wp.flags & SWP_NOMOVE) == 0) {
moel@243: Rectangle rect = Screen.GetWorkingArea(
moel@243: new Rectangle(wp.x, wp.y, wp.cx, wp.cy));
moel@183: const int margin = 16;
moel@183: wp.x = Math.Max(wp.x, rect.Left - wp.cx + margin);
moel@183: wp.x = Math.Min(wp.x, rect.Right - margin);
moel@183: wp.y = Math.Max(wp.y, rect.Top - wp.cy + margin);
moel@183: wp.y = Math.Min(wp.y, rect.Bottom - margin);
moel@183: }
moel@176:
moel@183: // update location and fire event
moel@183: if ((wp.flags & SWP_NOMOVE) == 0) {
moel@183: if (location.X != wp.x || location.Y != wp.y) {
moel@183: location = new Point(wp.x, wp.y);
moel@183: if (LocationChanged != null)
moel@183: LocationChanged(this, EventArgs.Empty);
moel@183: }
moel@183: }
moel@176:
moel@183: // update size and fire event
moel@183: if ((wp.flags & SWP_NOSIZE) == 0) {
moel@183: if (size.Width != wp.cx || size.Height != wp.cy) {
moel@183: size = new Size(wp.cx, wp.cy);
moel@183: if (SizeChanged != null)
moel@183: SizeChanged(this, EventArgs.Empty);
moel@183: }
moel@183: }
moel@176:
moel@183: // update the size of the layered window
moel@183: if ((wp.flags & SWP_NOSIZE) == 0) {
moel@183: NativeMethods.UpdateLayeredWindow(Handle, IntPtr.Zero,
moel@183: IntPtr.Zero, ref size, IntPtr.Zero, IntPtr.Zero, 0,
moel@183: IntPtr.Zero, 0);
moel@183: }
moel@183:
moel@183: // update the position of the layered window
moel@183: if ((wp.flags & SWP_NOMOVE) == 0) {
moel@183: NativeMethods.SetWindowPos(Handle, IntPtr.Zero,
moel@183: location.X, location.Y, 0, 0, SWP_NOSIZE | SWP_NOACTIVATE |
moel@183: SWP_NOZORDER | SWP_NOSENDCHANGING);
moel@183: }
moel@176: }
moel@183:
moel@183: // do not forward any move or size messages
moel@243: wp.flags |= SWP_NOSIZE | SWP_NOMOVE;
moel@243:
moel@243: // suppress any frame changed events
moel@243: wp.flags &= ~SWP_FRAMECHANGED;
moel@243:
moel@183: Marshal.StructureToPtr(wp, message.LParam, false);
moel@183: message.Result = IntPtr.Zero;
moel@183: } break;
moel@183: default: {
moel@183: base.WndProc(ref message);
moel@183: } break;
moel@176: }
moel@176: }
moel@176:
moel@176: private BlendFunction CreateBlendFunction() {
moel@176: BlendFunction blend = new BlendFunction();
moel@176: blend.BlendOp = AC_SRC_OVER;
moel@176: blend.BlendFlags = 0;
moel@176: blend.SourceConstantAlpha = opacity;
moel@176: blend.AlphaFormat = AC_SRC_ALPHA;
moel@176: return blend;
moel@176: }
moel@176:
moel@302: private void CreateBuffer() {
moel@302: IntPtr handleScreenDC = NativeMethods.GetDC(IntPtr.Zero);
moel@302: handleBitmapDC = NativeMethods.CreateCompatibleDC(handleScreenDC);
moel@302: NativeMethods.ReleaseDC(IntPtr.Zero, handleScreenDC);
moel@302: bufferSize = size;
moel@176:
moel@302: BitmapInfo info = new BitmapInfo();
moel@302: info.Size = Marshal.SizeOf(info);
moel@302: info.Width = size.Width;
moel@302: info.Height = -size.Height;
moel@302: info.BitCount = 32;
moel@302: info.Planes = 1;
moel@302:
moel@302: IntPtr ptr;
moel@302: IntPtr hBmp = NativeMethods.CreateDIBSection(handleBitmapDC, ref info, 0,
moel@302: out ptr, IntPtr.Zero, 0);
moel@302: IntPtr hBmpOld = NativeMethods.SelectObject(handleBitmapDC, hBmp);
moel@302: NativeMethods.DeleteObject(hBmpOld);
moel@302:
moel@302: graphics = Graphics.FromHdc(handleBitmapDC);
moel@302:
moel@302: if (Environment.OSVersion.Version.Major > 5) {
moel@302: this.graphics.TextRenderingHint = TextRenderingHint.SystemDefault;
moel@302: this.graphics.SmoothingMode = SmoothingMode.HighQuality;
moel@302: }
moel@302: }
moel@302:
moel@302: private void DisposeBuffer() {
moel@302: graphics.Dispose();
moel@302: NativeMethods.DeleteDC(handleBitmapDC);
moel@302: }
moel@302:
moel@302: public virtual void Dispose() {
moel@302: DisposeBuffer();
moel@302: }
moel@302:
moel@302: public PaintEventHandler Paint;
moel@302:
moel@302: public void Redraw() {
moel@302: if (!visible || Paint == null)
moel@302: return;
moel@302:
moel@302: if (size != bufferSize) {
moel@302: DisposeBuffer();
moel@302: CreateBuffer();
moel@302: }
moel@302:
moel@302: Paint(this,
moel@302: new PaintEventArgs(graphics, new Rectangle(Point.Empty, size)));
moel@176:
moel@176: Point pointSource = Point.Empty;
moel@183: BlendFunction blend = CreateBlendFunction();
moel@176:
moel@302: NativeMethods.UpdateLayeredWindow(Handle, IntPtr.Zero, IntPtr.Zero,
moel@302: ref size, handleBitmapDC, ref pointSource, 0, ref blend, ULW_ALPHA);
moel@183:
moel@183: // make sure the window is at the right location
moel@302: NativeMethods.SetWindowPos(Handle, IntPtr.Zero,
moel@302: location.X, location.Y, 0, 0, SWP_NOSIZE | SWP_NOACTIVATE |
moel@183: SWP_NOZORDER | SWP_NOSENDCHANGING);
moel@176: }
moel@176:
moel@176: public byte Opacity {
moel@176: get {
moel@176: return opacity;
moel@176: }
moel@176: set {
moel@176: if (opacity != value) {
moel@176: opacity = value;
moel@176: BlendFunction blend = CreateBlendFunction();
moel@176: NativeMethods.UpdateLayeredWindow(Handle, IntPtr.Zero, IntPtr.Zero,
moel@176: IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, 0, ref blend, ULW_ALPHA);
moel@176: }
moel@176: }
moel@176: }
moel@176:
moel@176: public bool Visible {
moel@176: get {
moel@176: return visible;
moel@176: }
moel@176: set {
moel@176: if (visible != value) {
moel@176: visible = value;
moel@176: NativeMethods.SetWindowPos(Handle, IntPtr.Zero, 0, 0, 0, 0,
moel@176: SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE | SWP_NOZORDER |
moel@176: (value ? SWP_SHOWWINDOW : SWP_HIDEWINDOW));
moel@180: if (value) {
moel@180: if (!alwaysOnTop)
moel@180: ShowDesktop.Instance.ShowDesktopChanged += ShowDesktopChanged;
moel@180: } else {
moel@180: if (!alwaysOnTop)
moel@180: ShowDesktop.Instance.ShowDesktopChanged -= ShowDesktopChanged;
moel@180: }
moel@176: }
moel@176: }
moel@176: }
moel@176:
moel@183: // if locked, the window can not be moved or resized
moel@183: public bool LockPositionAndSize {
moel@176: get {
moel@183: return lockPositionAndSize;
moel@176: }
moel@176: set {
moel@183: lockPositionAndSize = value;
moel@176: }
moel@176: }
moel@176:
moel@176: public bool AlwaysOnTop {
moel@176: get {
moel@176: return alwaysOnTop;
moel@176: }
moel@176: set {
moel@176: if (value != alwaysOnTop) {
moel@176: alwaysOnTop = value;
moel@176: if (alwaysOnTop) {
moel@180: if (visible)
moel@180: ShowDesktop.Instance.ShowDesktopChanged -= ShowDesktopChanged;
moel@176: MoveToTopMost(Handle);
moel@176: } else {
moel@176: MoveToBottom(Handle);
moel@180: if (visible)
moel@180: ShowDesktop.Instance.ShowDesktopChanged += ShowDesktopChanged;
moel@176: }
moel@176: }
moel@176: }
moel@176: }
moel@176:
moel@176: public Size Size {
moel@176: get {
moel@176: return size;
moel@176: }
moel@176: set {
moel@176: if (size != value) {
moel@176: size = value;
moel@183: NativeMethods.UpdateLayeredWindow(Handle, IntPtr.Zero, IntPtr.Zero,
moel@183: ref size, IntPtr.Zero, IntPtr.Zero, 0, IntPtr.Zero, 0);
moel@183: if (SizeChanged != null)
moel@183: SizeChanged(this, EventArgs.Empty);
moel@176: }
moel@176: }
moel@176: }
moel@176:
moel@183: public event EventHandler SizeChanged;
moel@183:
moel@176: public Point Location {
moel@176: get {
moel@176: return location;
moel@176: }
moel@176: set {
moel@183: if (location != value) {
moel@183: location = value;
moel@183: NativeMethods.SetWindowPos(Handle, IntPtr.Zero,
moel@183: location.X, location.Y, 0, 0,
moel@183: SWP_NOSIZE | SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOSENDCHANGING);
moel@183: if (LocationChanged != null)
moel@183: LocationChanged(this, EventArgs.Empty);
moel@183: }
moel@176: }
moel@176: }
moel@176:
moel@176: public event EventHandler LocationChanged;
moel@176:
moel@176: public ContextMenu ContextMenu {
moel@176: get {
moel@176: return contextMenu;
moel@176: }
moel@176: set {
moel@176: this.contextMenu = value;
moel@176: }
moel@176: }
moel@176:
moel@183: public event HitTestEventHandler HitTest;
moel@183:
moel@244: public event MouseEventHandler MouseDoubleClick;
moel@244:
moel@176: [StructLayout(LayoutKind.Sequential, Pack = 1)]
moel@176: private struct BlendFunction {
moel@176: public byte BlendOp;
moel@176: public byte BlendFlags;
moel@176: public byte SourceConstantAlpha;
moel@176: public byte AlphaFormat;
moel@176: }
moel@176:
moel@176: [StructLayout(LayoutKind.Sequential, Pack = 1)]
moel@176: private struct WindowPos {
moel@176: public IntPtr hwnd;
moel@176: public IntPtr hwndInsertAfter;
moel@176: public int x;
moel@176: public int y;
moel@176: public int cx;
moel@176: public int cy;
moel@176: public uint flags;
moel@176: }
moel@176:
moel@302: [StructLayout(LayoutKind.Sequential)]
moel@302: public struct BitmapInfo {
moel@302: public Int32 Size;
moel@302: public Int32 Width;
moel@302: public Int32 Height;
moel@302: public Int16 Planes;
moel@302: public Int16 BitCount;
moel@302: public Int32 Compression;
moel@302: public Int32 SizeImage;
moel@302: public Int32 XPelsPerMeter;
moel@302: public Int32 YPelsPerMeter;
moel@302: public Int32 ClrUsed;
moel@302: public Int32 ClrImportant;
moel@302: public Int32 Colors;
moel@302: }
moel@302:
moel@176: public static readonly IntPtr HWND_BOTTOM = (IntPtr)1;
moel@176: public static readonly IntPtr HWND_TOPMOST = (IntPtr)(-1);
moel@176:
moel@176: public const int WS_EX_LAYERED = 0x00080000;
moel@176: public const int WS_EX_TOOLWINDOW = 0x00000080;
moel@176:
moel@176: public const uint SWP_NOSIZE = 0x0001;
moel@176: public const uint SWP_NOMOVE = 0x0002;
moel@176: public const uint SWP_NOACTIVATE = 0x0010;
moel@243: public const uint SWP_FRAMECHANGED = 0x0020;
moel@176: public const uint SWP_HIDEWINDOW = 0x0080;
moel@176: public const uint SWP_SHOWWINDOW = 0x0040;
moel@176: public const uint SWP_NOZORDER = 0x0004;
moel@176: public const uint SWP_NOSENDCHANGING = 0x0400;
moel@176:
moel@176: public const int ULW_COLORKEY = 0x00000001;
moel@176: public const int ULW_ALPHA = 0x00000002;
moel@176: public const int ULW_OPAQUE = 0x00000004;
moel@176:
moel@176: public const byte AC_SRC_OVER = 0x00;
moel@176: public const byte AC_SRC_ALPHA = 0x01;
moel@176:
moel@176: public const int WM_NCHITTEST = 0x0084;
moel@176: public const int WM_NCLBUTTONDBLCLK = 0x00A3;
moel@176: public const int WM_NCLBUTTONDOWN = 0x00A1;
moel@176: public const int WM_NCLBUTTONUP = 0x00A2;
moel@176: public const int WM_NCRBUTTONDOWN = 0x00A4;
moel@176: public const int WM_NCRBUTTONUP = 0x00A5;
moel@176: public const int WM_WINDOWPOSCHANGING = 0x0046;
moel@176: public const int WM_COMMAND = 0x0111;
moel@176:
moel@176: public const int TPM_RIGHTBUTTON = 0x0002;
moel@176: public const int TPM_VERTICAL = 0x0040;
moel@176:
moel@176: private enum WindowAttribute : int {
moel@176: DWMWA_NCRENDERING_ENABLED = 1,
moel@176: DWMWA_NCRENDERING_POLICY,
moel@176: DWMWA_TRANSITIONS_FORCEDISABLED,
moel@176: DWMWA_ALLOW_NCPAINT,
moel@176: DWMWA_CAPTION_BUTTON_BOUNDS,
moel@176: DWMWA_NONCLIENT_RTL_LAYOUT,
moel@176: DWMWA_FORCE_ICONIC_REPRESENTATION,
moel@176: DWMWA_FLIP3D_POLICY,
moel@176: DWMWA_EXTENDED_FRAME_BOUNDS,
moel@176: DWMWA_HAS_ICONIC_BITMAP,
moel@176: DWMWA_DISALLOW_PEEK,
moel@176: DWMWA_EXCLUDED_FROM_PEEK,
moel@176: DWMWA_LAST
moel@176: }
moel@176:
paulwerelds@208: /// <summary>
paulwerelds@208: /// Some macros imported and converted from the Windows SDK
paulwerelds@208: /// </summary>
paulwerelds@208: private static class Macros {
paulwerelds@210: public static ushort LOWORD(IntPtr l) {
paulwerelds@210: return (ushort) ((ulong)l & 0xFFFF);
paulwerelds@208: }
paulwerelds@208:
paulwerelds@208: public static UInt16 HIWORD(IntPtr l) {
paulwerelds@210: return (ushort) (((ulong)l >> 16) & 0xFFFF);
paulwerelds@208: }
paulwerelds@208:
paulwerelds@208: public static int GET_X_LPARAM(IntPtr lp) {
paulwerelds@210: return (short) LOWORD(lp);
paulwerelds@208: }
paulwerelds@208:
paulwerelds@208: public static int GET_Y_LPARAM(IntPtr lp) {
paulwerelds@210: return (short) HIWORD(lp);
paulwerelds@208: }
paulwerelds@208: }
paulwerelds@208:
paulwerelds@208: /// <summary>
paulwerelds@208: /// Imported native methods
paulwerelds@208: /// </summary>
moel@176: private static class NativeMethods {
moel@176: private const string USER = "user32.dll";
moel@176: private const string GDI = "gdi32.dll";
moel@176: public const string DWMAPI = "dwmapi.dll";
moel@176:
moel@176: [DllImport(USER, CallingConvention = CallingConvention.Winapi)]
moel@176: [return: MarshalAs(UnmanagedType.Bool)]
moel@183: public static extern bool UpdateLayeredWindow(IntPtr hwnd, IntPtr hdcDst,
moel@183: IntPtr pptDst, ref Size psize, IntPtr hdcSrc, IntPtr pprSrc,
moel@183: int crKey, IntPtr pblend, int dwFlags);
moel@183:
moel@183: [DllImport(USER, CallingConvention = CallingConvention.Winapi)]
moel@183: [return: MarshalAs(UnmanagedType.Bool)]
moel@176: public static extern bool UpdateLayeredWindow(IntPtr hwnd, IntPtr hdcDst,
moel@183: IntPtr pptDst, ref Size psize, IntPtr hdcSrc, ref Point pprSrc,
moel@176: int crKey, ref BlendFunction pblend, int dwFlags);
moel@176:
moel@176: [DllImport(USER, CallingConvention = CallingConvention.Winapi)]
moel@176: [return: MarshalAs(UnmanagedType.Bool)]
moel@176: public static extern bool UpdateLayeredWindow(IntPtr hwnd, IntPtr hdcDst,
moel@176: IntPtr pptDst, IntPtr psize, IntPtr hdcSrc, IntPtr pprSrc,
moel@176: int crKey, ref BlendFunction pblend, int dwFlags);
moel@176:
moel@176: [DllImport(USER, CallingConvention = CallingConvention.Winapi)]
moel@176: public static extern IntPtr GetDC(IntPtr hWnd);
moel@176:
moel@176: [DllImport(USER, CallingConvention = CallingConvention.Winapi)]
moel@176: public static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);
moel@176:
moel@176: [DllImport(USER, CallingConvention = CallingConvention.Winapi)]
moel@176: public static extern bool SetWindowPos(IntPtr hWnd,
moel@176: IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);
moel@176:
moel@176: [DllImport(USER, CallingConvention = CallingConvention.Winapi)]
moel@176: public static extern bool TrackPopupMenuEx(IntPtr hMenu, uint uFlags,
moel@176: int x, int y, IntPtr hWnd, IntPtr tpmParams);
moel@176:
moel@176: [DllImport(GDI, CallingConvention = CallingConvention.Winapi)]
moel@176: public static extern IntPtr CreateCompatibleDC(IntPtr hDC);
moel@176:
moel@176: [DllImport(GDI, CallingConvention = CallingConvention.Winapi)]
moel@302: public static extern IntPtr CreateDIBSection(IntPtr hdc,
moel@302: [In] ref BitmapInfo pbmi, uint pila, out IntPtr ppvBits,
moel@302: IntPtr hSection, uint dwOffset);
moel@302:
moel@302: [DllImport(GDI, CallingConvention = CallingConvention.Winapi)]
moel@176: [return: MarshalAs(UnmanagedType.Bool)]
moel@176: public static extern bool DeleteDC(IntPtr hdc);
moel@176:
moel@176: [DllImport(GDI, CallingConvention = CallingConvention.Winapi)]
moel@176: public static extern IntPtr SelectObject(IntPtr hDC, IntPtr hObject);
moel@176:
moel@176: [DllImport(GDI, CallingConvention = CallingConvention.Winapi)]
moel@176: [return: MarshalAs(UnmanagedType.Bool)]
moel@176: public static extern bool DeleteObject(IntPtr hObject);
moel@176:
moel@176: [DllImport(DWMAPI, CallingConvention = CallingConvention.Winapi)]
moel@176: public static extern int DwmSetWindowAttribute(IntPtr hwnd,
moel@176: WindowAttribute dwAttribute, ref bool pvAttribute, int cbAttribute);
moel@176: }
moel@176: }
moel@183:
moel@183: public enum HitResult {
moel@183: Transparent = -1,
moel@183: Nowhere = 0,
moel@183: Client = 1,
moel@183: Caption = 2,
moel@183: Left = 10,
moel@183: Right = 11,
moel@183: Top = 12,
moel@183: TopLeft = 13,
moel@183: TopRight = 14,
moel@183: Bottom = 15,
moel@183: BottomLeft = 16,
moel@183: BottomRight = 17,
moel@183: Border = 18
moel@183: }
moel@183:
moel@183: public delegate void HitTestEventHandler(object sender, HitTestEventArgs e);
moel@183:
moel@183: public class HitTestEventArgs : EventArgs {
moel@183: public HitTestEventArgs(Point location, HitResult hitResult) {
moel@183: Location = location;
moel@183: HitResult = hitResult;
moel@183: }
moel@183: public Point Location { get; private set; }
moel@183: public HitResult HitResult { get; set; }
moel@183: }
moel@176: }