是否可以在表单应用程序中实现WPF样式的启动屏幕？
在我的VisualStudio10项目中使用资源时，我遇到了一个名为SplashScreen的构建操作，这使我在上找到了这篇文章 四处寻找，我在上找到了这篇MSDN文章，但这是一种不同的方法：WinForms版本在主窗体初始化时只显示启动屏幕，而不是在应用程序加载之前使用本机代码加载启动屏幕是否可以在表单应用程序中实现WPF样式的启动屏幕？,wpf,winforms,splash-screen,Wpf,Winforms,Splash Screen,在我的VisualStudio10项目中使用资源时，我遇到了一个名为SplashScreen的构建操作，这使我在上找到了这篇文章 四处寻找，我在上找到了这篇MSDN文章，但这是一种不同的方法：WinForms版本在主窗体初始化时只显示启动屏幕，而不是在应用程序加载之前使用本机代码加载启动屏幕 有没有办法在WinForms应用程序中实现这种出色的启动屏幕类型？可以使用非WPF表单来实现这一点，而且工作起来非常愉快。另一方面，它也是VS2008中的一个特性。可以使用非WPF表单来实现这一点，而且工作
有没有办法在WinForms应用程序中实现这种出色的启动屏幕类型？可以使用非WPF表单来实现这一点，而且工作起来非常愉快。另一方面，它也是VS2008中的一个特性。可以使用非WPF表单来实现这一点，而且工作起来非常愉快。顺便说一句，它也是VS2008中的一项功能。是的。在WPF应用程序与.NET3.5SP1打包之前，我为它做了一个实现 基本上，在加载程序集和初始化应用程序时，创建本机Win32窗口并显示BMP图像。您可以使用其他图像格式，但BMP是首选格式，因为它需要加载的库数量最少 一个快速创建本机splash窗口的google发布了几篇文章。我从快速扫描中发现的最全面的是布拉德利·格兰杰的作品：。这篇文章是为WPF编写的，但其概念是相同的：创建一个本机窗口，启动应用程序，关闭窗口 明天我将在工作中查看实现的源代码，并用示例更新我的答案 在此之前，谷歌和谷歌研究了许多已经存在的例子，开始着手 更新 正如所承诺的，下面是一个完整的示例，它实现了一个闪屏
using System;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Security;
using System.Security.Permissions;
using System.Threading;
using System.Windows.Interop;
namespace SplashScreen
{
public class SplashScreenManager
{
static SplashScreen _current = null;
static SplashScreenManager() {}
SplashScreenManager() { }
public static SplashScreen Create(Module module, int resourceID)
{
if (_current != null)
{
_current.Close();
_current.Dispose();
}
_current = new SplashScreen(module, resourceID);
return _current;
}
public static void Close()
{
if (_current == null)
return;
_current.Close();
_current.Dispose();
_current = null;
}
public static SplashScreen Current
{
get { return _current; }
}
}
public class SplashScreen : IDisposable
{
static bool IsClassRegistered = false;
static string WindowClassName = "SplashScreenWindowClass";
IntPtr _bitmapHandle = IntPtr.Zero;
int _bitmapHeight;
int _bitmapWidth;
bool _isClosed;
UnsafeNativeMethods.WndProc _splashWindowProcedureCallback;
IntPtr _windowHandle = IntPtr.Zero;
[SecurityPermission(SecurityAction.Demand, UnmanagedCode = true)]
internal SplashScreen(Module module, int resourceID)
{
_bitmapHandle = UnsafeNativeMethods.LoadBitmap(Marshal.GetHINSTANCE(module), new IntPtr(resourceID));
_splashWindowProcedureCallback = new UnsafeNativeMethods.WndProc(SplashWindowProcedure);
}
public void Close()
{
if (_isClosed)
return;
_isClosed = true;
UnsafeNativeMethods.PostMessage(new HandleRef(this, _windowHandle), 0x10, IntPtr.Zero, IntPtr.Zero);
if (_bitmapHandle != IntPtr.Zero)
{
UnsafeNativeMethods.DeleteObject(_bitmapHandle);
_bitmapHandle = IntPtr.Zero;
}
}
public void Close(IntPtr handle)
{
if (_windowHandle != IntPtr.Zero)
UnsafeNativeMethods.SetForegroundWindow(handle);
Close();
}
void CreateWindow()
{
if (!IsClassRegistered)
RegisterClass();
if (IsClassRegistered)
{
CreateWindowInternal();
if (_windowHandle != IntPtr.Zero)
UnsafeNativeMethods.ShowWindow(_windowHandle, 5);
}
}
public void Dispose()
{
Dispose(true);
}
protected virtual void Dispose(bool disposing)
{
Close(IntPtr.Zero);
GC.SuppressFinalize(this);
}
void GetBitmapDimensions()
{
int cb = Marshal.SizeOf(typeof(UnsafeNativeMethods.BITMAP));
IntPtr lpvObject = Marshal.AllocCoTaskMem(cb);
UnsafeNativeMethods.GetObject(_bitmapHandle, cb, lpvObject);
UnsafeNativeMethods.BITMAP bitmap = (UnsafeNativeMethods.BITMAP)Marshal.PtrToStructure(lpvObject, typeof(UnsafeNativeMethods.BITMAP));
_bitmapWidth = bitmap.bmWidth;
_bitmapHeight = bitmap.bmHeight;
Marshal.FreeCoTaskMem(lpvObject);
}
void OnPaint(IntPtr hdc)
{
if (_bitmapHandle != IntPtr.Zero)
{
IntPtr ptr = UnsafeNativeMethods.CreateCompatibleDC(hdc);
IntPtr hgdiobj = UnsafeNativeMethods.SelectObject(ptr, _bitmapHandle);
UnsafeNativeMethods.BitBlt(hdc, 0, 0, _bitmapWidth, _bitmapHeight, ptr, 0, 0, 0xcc0020);
UnsafeNativeMethods.SelectObject(ptr, hgdiobj);
UnsafeNativeMethods.DeleteDC(ptr);
}
}
void CreateWindowInternal()
{
int systemMetrics = UnsafeNativeMethods.GetSystemMetrics(0);
int num4 = UnsafeNativeMethods.GetSystemMetrics(1);
uint dwStyle = 0x80000000;
uint dwExStyle = 0x188;
IntPtr moduleHandle = UnsafeNativeMethods.GetModuleHandle(null);
IntPtr desktopWindow = UnsafeNativeMethods.GetDesktopWindow();
_windowHandle = UnsafeNativeMethods.CreateWindowEx(dwExStyle, WindowClassName, "", dwStyle, (systemMetrics - _bitmapWidth) / 2, (num4 - _bitmapHeight) / 2, _bitmapWidth, _bitmapHeight, desktopWindow, IntPtr.Zero, moduleHandle, IntPtr.Zero);
}
void RegisterClass()
{
IntPtr moduleHandle = UnsafeNativeMethods.GetModuleHandle(null);
UnsafeNativeMethods.WNDCLASSEX lpwcx = new UnsafeNativeMethods.WNDCLASSEX();
lpwcx.cbSize = (uint)Marshal.SizeOf(typeof(UnsafeNativeMethods.WNDCLASSEX));
lpwcx.cbClsExtra = 0;
lpwcx.cbWndExtra = 0;
lpwcx.hbrBackground = IntPtr.Zero;
lpwcx.hCursor = IntPtr.Zero;
lpwcx.hIcon = IntPtr.Zero;
lpwcx.hIconSm = IntPtr.Zero;
lpwcx.hInstance = moduleHandle;
lpwcx.lpfnWndProc = _splashWindowProcedureCallback;
lpwcx.lpszClassName = WindowClassName;
lpwcx.lpszMenuName = null;
lpwcx.style = 0;
if (UnsafeNativeMethods.RegisterClassExW(ref lpwcx) != 0)
{
IsClassRegistered = true;
}
}
public void Show()
{
if (_windowHandle == IntPtr.Zero)
{
Thread thread = new Thread(new ThreadStart(ThreadMethod));
thread.IsBackground = true;
thread.Start();
}
}
[SuppressUnmanagedCodeSecurity]
IntPtr SplashWindowProcedure(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam)
{
if (msg == 15)
{
UnsafeNativeMethods.PAINTSTRUCT lpPaint = new UnsafeNativeMethods.PAINTSTRUCT();
IntPtr hdc = UnsafeNativeMethods.BeginPaint(hWnd, out lpPaint);
OnPaint(hdc);
UnsafeNativeMethods.EndPaint(hWnd, ref lpPaint);
return IntPtr.Zero;
}
return UnsafeNativeMethods.DefWindowProc(hWnd, msg, wParam, lParam);
}
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
void ThreadMethod()
{
if (_bitmapHandle != IntPtr.Zero)
{
GetBitmapDimensions();
CreateWindow();
MSG msg = new MSG();
while (UnsafeNativeMethods.GetMessage(ref msg, _windowHandle, 0, 0) > 0)
{
UnsafeNativeMethods.TranslateMessage(ref msg);
UnsafeNativeMethods.DispatchMessage(ref msg);
}
_windowHandle = IntPtr.Zero;
GC.KeepAlive(this);
}
}
}
[SuppressUnmanagedCodeSecurity]
internal sealed class UnsafeNativeMethods
{
// Fields
internal const int GWL_EXSTYLE = -20;
public const int LOGPIXELSX = 0x58;
public const int LOGPIXELSY = 90;
internal const uint MB_ICONASTERISK = 0x40;
internal const uint MB_ICONERROR = 0x10;
internal const uint MB_ICONEXCLAMATION = 0x30;
internal const uint MB_ICONHAND = 0x10;
internal const uint MB_ICONINFORMATION = 0x40;
internal const uint MB_ICONQUESTION = 0x20;
internal const uint MB_ICONWARNING = 0x30;
internal const uint MB_OK = 0;
internal const uint MB_OKCANCEL = 1;
internal const uint MB_SETFOREGROUND = 0x10000;
internal const uint MB_YESNO = 4;
internal const uint MB_YESNOCANCEL = 3;
internal const int SM_CXSCREEN = 0;
internal const int SM_CYSCREEN = 1;
public const int SPI_GETWORKAREA = 0x30;
internal const uint SRCCOPY = 0xcc0020;
public const int SW_HIDE = 0;
internal const int SW_SHOW = 5;
public const int SW_SHOWMAXIMIZED = 3;
public const int SW_SHOWMINIMIZED = 2;
public const int SW_SHOWNORMAL = 1;
internal const int WM_CLOSE = 0x10;
internal const uint WS_EX_TOOLWINDOW = 0x80;
internal const uint WS_EX_TOPMOST = 8;
internal const uint WS_EX_TRANSPARENT = 0x20;
internal const uint WS_EX_WINDOWEDGE = 0x100;
internal const uint WS_POPUP = 0x80000000;
UnsafeNativeMethods() {}
[DllImport("user32.dll")]
public static extern IntPtr WindowFromPoint(POINT Point);
[DllImport("user32.dll")]
public static extern IntPtr ChildWindowFromPoint(IntPtr hWndParent, POINT Point);
[DllImport("user32.dll")]
public static extern bool ScreenToClient(IntPtr hWnd, ref POINT lpPoint);
[DllImport("user32.dll")]
internal static extern IntPtr BeginPaint(IntPtr hwnd, out PAINTSTRUCT lpPaint);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("gdi32.dll")]
internal static extern bool BitBlt(IntPtr hdc, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, uint dwRop);
[DllImport("gdi32.dll")]
internal static extern IntPtr CreateCompatibleDC(IntPtr hdc);
[DllImport("user32.dll", EntryPoint = "CreateWindowExW", CharSet = CharSet.Unicode)]
internal static extern IntPtr CreateWindowEx(uint dwExStyle, string lpClassName, string lpWindowName, uint dwStyle, int x, int y, int nWidth, int nHeight, IntPtr hWndParent, IntPtr hMenu, IntPtr hInstance, IntPtr lpParam);
[DllImport("user32.dll")]
internal static extern IntPtr DefWindowProc(IntPtr hWnd, uint uMsg, IntPtr wParam, IntPtr lParam);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("gdi32.dll")]
internal static extern bool DeleteDC(IntPtr hdc);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("gdi32.dll")]
internal static extern bool DeleteObject(IntPtr hObject);
[DllImport("user32.dll")]
internal static extern IntPtr DispatchMessage([In] ref MSG lpmsg);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
internal static extern bool EndPaint(IntPtr hWnd, ref PAINTSTRUCT lpPaint);
[DllImport("user32.dll")]
public static extern IntPtr GetDC(IntPtr hWnd);
[DllImport("user32.dll")]
internal static extern IntPtr GetDC(HandleRef hWnd);
[DllImport("user32.dll")]
internal static extern IntPtr GetDesktopWindow();
[DllImport("gdi32.dll")]
public static extern int GetDeviceCaps(IntPtr hDC, int index);
[DllImport("user32.dll", EntryPoint = "GetMessageW", CharSet = CharSet.Unicode, ExactSpelling = true)]
internal static extern int GetMessage([In, Out] ref MSG msg, IntPtr hWnd, int uMsgFilterMin, int uMsgFilterMax);
[DllImport("kernel32.dll", EntryPoint = "GetModuleHandleW", CharSet = CharSet.Unicode)]
internal static extern IntPtr GetModuleHandle(string lpModuleName);
[DllImport("gdi32.dll")]
internal static extern int GetObject(IntPtr hgdiobj, int cbBuffer, IntPtr lpvObject);
[DllImport("user32.dll")]
internal static extern int GetSystemMetrics(int nIndex);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
internal static extern int GetWindowLong(IntPtr handle, int index);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
public static extern bool GetWindowPlacement(IntPtr hWnd, out WINDOWPLACEMENT lpwndpl);
[DllImport("user32.dll", EntryPoint = "LoadBitmapW", CharSet = CharSet.Unicode)]
internal static extern IntPtr LoadBitmap(IntPtr hInstance, IntPtr lpBitmapName);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
internal static extern bool PostMessage(HandleRef hWnd, uint Msg, IntPtr wParam, IntPtr lParam);
[return: MarshalAs(UnmanagedType.U2)]
[DllImport("user32.dll")]
internal static extern short RegisterClassExW([In] ref WNDCLASSEX lpwcx);
[DllImport("user32.dll")]
public static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);
[DllImport("gdi32.dll")]
internal static extern IntPtr SelectObject(IntPtr hdc, IntPtr hgdiobj);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
internal static extern bool SetForegroundWindow(IntPtr hWnd);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
internal static extern int SetWindowLong(IntPtr handle, int index, int dwNewLong);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
public static extern bool SetWindowPlacement(IntPtr hWnd, [In] ref WINDOWPLACEMENT lpwndpl);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
internal static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
public static extern bool SystemParametersInfo(int nAction, int nParam, ref RECT rc, int nUpdate);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
internal static extern bool TranslateMessage([In] ref MSG lpMsg);
[StructLayout(LayoutKind.Sequential)]
internal struct BITMAP
{
public int bmType;
public int bmWidth;
public int bmHeight;
public int bmWidthBytes;
public ushort bmPlanes;
public ushort bmBitsPixel;
public IntPtr bmBits;
}
[StructLayout(LayoutKind.Sequential)]
internal struct PAINTSTRUCT
{
public IntPtr hdc;
public bool fErase;
public UnsafeNativeMethods.RECT rcPaint;
public bool fRestore;
public bool fIncUpdate;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x20)]
public byte[] rgbReserved;
}
[StructLayout(LayoutKind.Sequential)]
public struct POINT
{
public int X;
public int Y;
}
[StructLayout(LayoutKind.Sequential)]
internal struct RECT
{
public int Left;
public int Top;
public int Right;
public int Bottom;
}
[StructLayout(LayoutKind.Sequential)]
public struct WINDOWPLACEMENT
{
public int Length;
public int Flags;
public int ShowCmd;
public UnsafeNativeMethods.POINT MinPosition;
public UnsafeNativeMethods.POINT MaxPosition;
public UnsafeNativeMethods.RECT NormalPosition;
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
internal struct WNDCLASSEX
{
public uint cbSize;
public uint style;
public UnsafeNativeMethods.WndProc lpfnWndProc;
public int cbClsExtra;
public int cbWndExtra;
public IntPtr hInstance;
public IntPtr hIcon;
public IntPtr hCursor;
public IntPtr hbrBackground;
public string lpszMenuName;
public string lpszClassName;
public IntPtr hIconSm;
}
internal delegate IntPtr WndProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam);
}
}
对。在WPF应用程序与.NET3.5SP1打包之前，我为它做了一个实现 基本上，在加载程序集和初始化应用程序时，创建本机Win32窗口并显示BMP图像。您可以使用其他图像格式，但BMP是首选格式，因为它需要加载的库数量最少 一个快速创建本机splash窗口的google发布了几篇文章。我从快速扫描中发现的最全面的是布拉德利·格兰杰的作品：。这篇文章是为WPF编写的，但其概念是相同的：创建一个本机窗口，启动应用程序，关闭窗口 明天我将在工作中查看实现的源代码，并用示例更新我的答案 在此之前，谷歌和谷歌研究了许多已经存在的例子，开始着手 更新 正如所承诺的，下面是一个完整的示例，它实现了一个闪屏
using System;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Security;
using System.Security.Permissions;
using System.Threading;
using System.Windows.Interop;
namespace SplashScreen
{
public class SplashScreenManager
{
static SplashScreen _current = null;
static SplashScreenManager() {}
SplashScreenManager() { }
public static SplashScreen Create(Module module, int resourceID)
{
if (_current != null)
{
_current.Close();
_current.Dispose();
}
_current = new SplashScreen(module, resourceID);
return _current;
}
public static void Close()
{
if (_current == null)
return;
_current.Close();
_current.Dispose();
_current = null;
}
public static SplashScreen Current
{
get { return _current; }
}
}
public class SplashScreen : IDisposable
{
static bool IsClassRegistered = false;
static string WindowClassName = "SplashScreenWindowClass";
IntPtr _bitmapHandle = IntPtr.Zero;
int _bitmapHeight;
int _bitmapWidth;
bool _isClosed;
UnsafeNativeMethods.WndProc _splashWindowProcedureCallback;
IntPtr _windowHandle = IntPtr.Zero;
[SecurityPermission(SecurityAction.Demand, UnmanagedCode = true)]
internal SplashScreen(Module module, int resourceID)
{
_bitmapHandle = UnsafeNativeMethods.LoadBitmap(Marshal.GetHINSTANCE(module), new IntPtr(resourceID));
_splashWindowProcedureCallback = new UnsafeNativeMethods.WndProc(SplashWindowProcedure);
}
public void Close()
{
if (_isClosed)
return;
_isClosed = true;
UnsafeNativeMethods.PostMessage(new HandleRef(this, _windowHandle), 0x10, IntPtr.Zero, IntPtr.Zero);
if (_bitmapHandle != IntPtr.Zero)
{
UnsafeNativeMethods.DeleteObject(_bitmapHandle);
_bitmapHandle = IntPtr.Zero;
}
}
public void Close(IntPtr handle)
{
if (_windowHandle != IntPtr.Zero)
UnsafeNativeMethods.SetForegroundWindow(handle);
Close();
}
void CreateWindow()
{
if (!IsClassRegistered)
RegisterClass();
if (IsClassRegistered)
{
CreateWindowInternal();
if (_windowHandle != IntPtr.Zero)
UnsafeNativeMethods.ShowWindow(_windowHandle, 5);
}
}
public void Dispose()
{
Dispose(true);
}
protected virtual void Dispose(bool disposing)
{
Close(IntPtr.Zero);
GC.SuppressFinalize(this);
}
void GetBitmapDimensions()
{
int cb = Marshal.SizeOf(typeof(UnsafeNativeMethods.BITMAP));
IntPtr lpvObject = Marshal.AllocCoTaskMem(cb);
UnsafeNativeMethods.GetObject(_bitmapHandle, cb, lpvObject);
UnsafeNativeMethods.BITMAP bitmap = (UnsafeNativeMethods.BITMAP)Marshal.PtrToStructure(lpvObject, typeof(UnsafeNativeMethods.BITMAP));
_bitmapWidth = bitmap.bmWidth;
_bitmapHeight = bitmap.bmHeight;
Marshal.FreeCoTaskMem(lpvObject);
}
void OnPaint(IntPtr hdc)
{
if (_bitmapHandle != IntPtr.Zero)
{
IntPtr ptr = UnsafeNativeMethods.CreateCompatibleDC(hdc);
IntPtr hgdiobj = UnsafeNativeMethods.SelectObject(ptr, _bitmapHandle);
UnsafeNativeMethods.BitBlt(hdc, 0, 0, _bitmapWidth, _bitmapHeight, ptr, 0, 0, 0xcc0020);
UnsafeNativeMethods.SelectObject(ptr, hgdiobj);
UnsafeNativeMethods.DeleteDC(ptr);
}
}
void CreateWindowInternal()
{
int systemMetrics = UnsafeNativeMethods.GetSystemMetrics(0);
int num4 = UnsafeNativeMethods.GetSystemMetrics(1);
uint dwStyle = 0x80000000;
uint dwExStyle = 0x188;
IntPtr moduleHandle = UnsafeNativeMethods.GetModuleHandle(null);
IntPtr desktopWindow = UnsafeNativeMethods.GetDesktopWindow();
_windowHandle = UnsafeNativeMethods.CreateWindowEx(dwExStyle, WindowClassName, "", dwStyle, (systemMetrics - _bitmapWidth) / 2, (num4 - _bitmapHeight) / 2, _bitmapWidth, _bitmapHeight, desktopWindow, IntPtr.Zero, moduleHandle, IntPtr.Zero);
}
void RegisterClass()
{
IntPtr moduleHandle = UnsafeNativeMethods.GetModuleHandle(null);
UnsafeNativeMethods.WNDCLASSEX lpwcx = new UnsafeNativeMethods.WNDCLASSEX();
lpwcx.cbSize = (uint)Marshal.SizeOf(typeof(UnsafeNativeMethods.WNDCLASSEX));
lpwcx.cbClsExtra = 0;
lpwcx.cbWndExtra = 0;
lpwcx.hbrBackground = IntPtr.Zero;
lpwcx.hCursor = IntPtr.Zero;
lpwcx.hIcon = IntPtr.Zero;
lpwcx.hIconSm = IntPtr.Zero;
lpwcx.hInstance = moduleHandle;
lpwcx.lpfnWndProc = _splashWindowProcedureCallback;
lpwcx.lpszClassName = WindowClassName;
lpwcx.lpszMenuName = null;
lpwcx.style = 0;
if (UnsafeNativeMethods.RegisterClassExW(ref lpwcx) != 0)
{
IsClassRegistered = true;
}
}
public void Show()
{
if (_windowHandle == IntPtr.Zero)
{
Thread thread = new Thread(new ThreadStart(ThreadMethod));
thread.IsBackground = true;
thread.Start();
}
}
[SuppressUnmanagedCodeSecurity]
IntPtr SplashWindowProcedure(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam)
{
if (msg == 15)
{
UnsafeNativeMethods.PAINTSTRUCT lpPaint = new UnsafeNativeMethods.PAINTSTRUCT();
IntPtr hdc = UnsafeNativeMethods.BeginPaint(hWnd, out lpPaint);
OnPaint(hdc);
UnsafeNativeMethods.EndPaint(hWnd, ref lpPaint);
return IntPtr.Zero;
}
return UnsafeNativeMethods.DefWindowProc(hWnd, msg, wParam, lParam);
}
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
void ThreadMethod()
{
if (_bitmapHandle != IntPtr.Zero)
{
GetBitmapDimensions();
CreateWindow();
MSG msg = new MSG();
while (UnsafeNativeMethods.GetMessage(ref msg, _windowHandle, 0, 0) > 0)
{
UnsafeNativeMethods.TranslateMessage(ref msg);
UnsafeNativeMethods.DispatchMessage(ref msg);
}
_windowHandle = IntPtr.Zero;
GC.KeepAlive(this);
}
}
}
[SuppressUnmanagedCodeSecurity]
internal sealed class UnsafeNativeMethods
{
// Fields
internal const int GWL_EXSTYLE = -20;
public const int LOGPIXELSX = 0x58;
public const int LOGPIXELSY = 90;
internal const uint MB_ICONASTERISK = 0x40;
internal const uint MB_ICONERROR = 0x10;
internal const uint MB_ICONEXCLAMATION = 0x30;
internal const uint MB_ICONHAND = 0x10;
internal const uint MB_ICONINFORMATION = 0x40;
internal const uint MB_ICONQUESTION = 0x20;
internal const uint MB_ICONWARNING = 0x30;
internal const uint MB_OK = 0;
internal const uint MB_OKCANCEL = 1;
internal const uint MB_SETFOREGROUND = 0x10000;
internal const uint MB_YESNO = 4;
internal const uint MB_YESNOCANCEL = 3;
internal const int SM_CXSCREEN = 0;
internal const int SM_CYSCREEN = 1;
public const int SPI_GETWORKAREA = 0x30;
internal const uint SRCCOPY = 0xcc0020;
public const int SW_HIDE = 0;
internal const int SW_SHOW = 5;
public const int SW_SHOWMAXIMIZED = 3;
public const int SW_SHOWMINIMIZED = 2;
public const int SW_SHOWNORMAL = 1;
internal const int WM_CLOSE = 0x10;
internal const uint WS_EX_TOOLWINDOW = 0x80;
internal const uint WS_EX_TOPMOST = 8;
internal const uint WS_EX_TRANSPARENT = 0x20;
internal const uint WS_EX_WINDOWEDGE = 0x100;
internal const uint WS_POPUP = 0x80000000;
UnsafeNativeMethods() {}
[DllImport("user32.dll")]
public static extern IntPtr WindowFromPoint(POINT Point);
[DllImport("user32.dll")]
public static extern IntPtr ChildWindowFromPoint(IntPtr hWndParent, POINT Point);
[DllImport("user32.dll")]
public static extern bool ScreenToClient(IntPtr hWnd, ref POINT lpPoint);
[DllImport("user32.dll")]
internal static extern IntPtr BeginPaint(IntPtr hwnd, out PAINTSTRUCT lpPaint);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("gdi32.dll")]
internal static extern bool BitBlt(IntPtr hdc, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, uint dwRop);
[DllImport("gdi32.dll")]
internal static extern IntPtr CreateCompatibleDC(IntPtr hdc);
[DllImport("user32.dll", EntryPoint = "CreateWindowExW", CharSet = CharSet.Unicode)]
internal static extern IntPtr CreateWindowEx(uint dwExStyle, string lpClassName, string lpWindowName, uint dwStyle, int x, int y, int nWidth, int nHeight, IntPtr hWndParent, IntPtr hMenu, IntPtr hInstance, IntPtr lpParam);
[DllImport("user32.dll")]
internal static extern IntPtr DefWindowProc(IntPtr hWnd, uint uMsg, IntPtr wParam, IntPtr lParam);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("gdi32.dll")]
internal static extern bool DeleteDC(IntPtr hdc);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("gdi32.dll")]
internal static extern bool DeleteObject(IntPtr hObject);
[DllImport("user32.dll")]
internal static extern IntPtr DispatchMessage([In] ref MSG lpmsg);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
internal static extern bool EndPaint(IntPtr hWnd, ref PAINTSTRUCT lpPaint);
[DllImport("user32.dll")]
public static extern IntPtr GetDC(IntPtr hWnd);
[DllImport("user32.dll")]
internal static extern IntPtr GetDC(HandleRef hWnd);
[DllImport("user32.dll")]
internal static extern IntPtr GetDesktopWindow();
[DllImport("gdi32.dll")]
public static extern int GetDeviceCaps(IntPtr hDC, int index);
[DllImport("user32.dll", EntryPoint = "GetMessageW", CharSet = CharSet.Unicode, ExactSpelling = true)]
internal static extern int GetMessage([In, Out] ref MSG msg, IntPtr hWnd, int uMsgFilterMin, int uMsgFilterMax);
[DllImport("kernel32.dll", EntryPoint = "GetModuleHandleW", CharSet = CharSet.Unicode)]
internal static extern IntPtr GetModuleHandle(string lpModuleName);
[DllImport("gdi32.dll")]
internal static extern int GetObject(IntPtr hgdiobj, int cbBuffer, IntPtr lpvObject);
[DllImport("user32.dll")]
internal static extern int GetSystemMetrics(int nIndex);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
internal static extern int GetWindowLong(IntPtr handle, int index);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
public static extern bool GetWindowPlacement(IntPtr hWnd, out WINDOWPLACEMENT lpwndpl);
[DllImport("user32.dll", EntryPoint = "LoadBitmapW", CharSet = CharSet.Unicode)]
internal static extern IntPtr LoadBitmap(IntPtr hInstance, IntPtr lpBitmapName);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
internal static extern bool PostMessage(HandleRef hWnd, uint Msg, IntPtr wParam, IntPtr lParam);
[return: MarshalAs(UnmanagedType.U2)]
[DllImport("user32.dll")]
internal static extern short RegisterClassExW([In] ref WNDCLASSEX lpwcx);
[DllImport("user32.dll")]
public static extern int ReleaseDC(IntPtr hWnd, IntPtr hDC);
[DllImport("gdi32.dll")]
internal static extern IntPtr SelectObject(IntPtr hdc, IntPtr hgdiobj);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
internal static extern bool SetForegroundWindow(IntPtr hWnd);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
internal static extern int SetWindowLong(IntPtr handle, int index, int dwNewLong);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
public static extern bool SetWindowPlacement(IntPtr hWnd, [In] ref WINDOWPLACEMENT lpwndpl);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
internal static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
public static extern bool SystemParametersInfo(int nAction, int nParam, ref RECT rc, int nUpdate);
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll")]
internal static extern bool TranslateMessage([In] ref MSG lpMsg);
[StructLayout(LayoutKind.Sequential)]
internal struct BITMAP
{
public int bmType;
public int bmWidth;
public int bmHeight;
public int bmWidthBytes;
public ushort bmPlanes;
public ushort bmBitsPixel;
public IntPtr bmBits;
}
[StructLayout(LayoutKind.Sequential)]
internal struct PAINTSTRUCT
{
public IntPtr hdc;
public bool fErase;
public UnsafeNativeMethods.RECT rcPaint;
public bool fRestore;
public bool fIncUpdate;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x20)]
public byte[] rgbReserved;
}
[StructLayout(LayoutKind.Sequential)]
public struct POINT
{
public int X;
public int Y;
}
[StructLayout(LayoutKind.Sequential)]
internal struct RECT
{
public int Left;
public int Top;
public int Right;
public int Bottom;
}
[StructLayout(LayoutKind.Sequential)]
public struct WINDOWPLACEMENT
{
public int Length;
public int Flags;
public int ShowCmd;
public UnsafeNativeMethods.POINT MinPosition;
public UnsafeNativeMethods.POINT MaxPosition;
public UnsafeNativeMethods.RECT NormalPosition;
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
internal struct WNDCLASSEX
{
public uint cbSize;
public uint style;
public UnsafeNativeMethods.WndProc lpfnWndProc;
public int cbClsExtra;
public int cbWndExtra;
public IntPtr hInstance;
public IntPtr hIcon;
public IntPtr hCursor;
public IntPtr hbrBackground;
public string lpszMenuName;
public string lpszClassName;
public IntPtr hIconSm;
}
internal delegate IntPtr WndProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam);
}
}
这看起来不错。另请参阅奥尔森的《重塑》：@Tom：我实际上是先读奥尔森的帖子，然后通过链接找到布拉德利的文章。今天晚些时候有时间我会更新我的答案。这看起来不错。另请参阅奥尔森的《重塑》：@Tom：我实际上是先读奥尔森的帖子，然后通过链接找到布拉德利的文章。今天晚些时候有时间的时候我会更新我的答案。