WPFウィンドウでのDirectXレンダリング

using System; using System.Runtime.InteropServices; using System.Windows; using System.Windows.Interop; namespace app { public class NativeWindow : HwndHost { public new IntPtr Handle { get; private set; } Procedure procedure; const int WM_PAINT = 0x000F; const int WM_SIZE = 0x0005; [StructLayout(LayoutKind.Sequential)] struct WindowClass { public uint Style; public IntPtr Callback; public int ClassExtra; public int WindowExtra; public IntPtr Instance; public IntPtr Icon; public IntPtr Cursor; public IntPtr Background; [MarshalAs(UnmanagedType.LPWStr)] public string Menu; [MarshalAs(UnmanagedType.LPWStr)] public string Class; } [StructLayout(LayoutKind.Sequential)] struct Rect { public int Left; public int Top; public int Right; public int Bottom; } [StructLayout(LayoutKind.Sequential)] struct Paint { public IntPtr Context; public bool Erase; public Rect Area; public bool Restore; public bool Update; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] Reserved; } delegate IntPtr Procedure (IntPtr handle, uint message, IntPtr wparam, IntPtr lparam); [DllImport("user32.dll")] static extern IntPtr CreateWindowEx (uint extended, [MarshalAs(UnmanagedType.LPWStr)] string name, [MarshalAs(UnmanagedType.LPWStr)] string caption, uint style, int x, int y, int width, int height, IntPtr parent, IntPtr menu, IntPtr instance, IntPtr param); [DllImport("user32.dll")] static extern IntPtr LoadCursor (IntPtr instance, int name); [DllImport("user32.dll")] static extern IntPtr DefWindowProc (IntPtr handle, uint message, IntPtr wparam, IntPtr lparam); [DllImport("user32.dll")] static extern ushort RegisterClass ([In] ref WindowClass register); [DllImport("user32.dll")] static extern bool DestroyWindow (IntPtr handle); [DllImport("user32.dll")] static extern IntPtr BeginPaint (IntPtr handle, out Paint paint); [DllImport("user32.dll")] static extern bool EndPaint (IntPtr handle, [In] ref Paint paint); protected override HandleRef BuildWindowCore(HandleRef parent) { var callback = Marshal.GetFunctionPointerForDelegate(procedure = WndProc); var width = Convert.ToInt32(ActualWidth); var height = Convert.ToInt32(ActualHeight); var cursor = LoadCursor(IntPtr.Zero, 32512); var menu = string.Empty; var background = new IntPtr(1); var zero = IntPtr.Zero; var caption = string.Empty; var style = 3u; var extra = 0; var extended = 0u; var window = 0x50000000u; var point = 0; var name = "Win32"; var wnd = new WindowClass { Style = style, Callback = callback, ClassExtra = extra, WindowExtra = extra, Instance = zero, Icon = zero, Cursor = cursor, Background = background, Menu = menu, Class = name }; RegisterClass(ref wnd); Handle = CreateWindowEx(extended, name, caption, window, point, point, width, height, parent.Handle, zero, zero, zero); return new HandleRef(this, Handle); } protected override void DestroyWindowCore(HandleRef handle) { DestroyWindow(handle.Handle); } protected override IntPtr WndProc(IntPtr handle, int message, IntPtr wparam, IntPtr lparam, ref bool handled) { try { if (message == WM_PAINT) { Paint paint; BeginPaint(handle, out paint); EndPaint(handle, ref paint); handled = true; } if (message == WM_SIZE) { handled = true; } } catch (Exception e) { MessageBox.Show(e.Message); } return base.WndProc(handle, message, wparam, lparam, ref handled); } static IntPtr WndProc(IntPtr handle, uint message, IntPtr wparam, IntPtr lparam) { return DefWindowProc(handle, message, wparam, lparam); } } } 

 <Window x:Class="app.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:i="clr-namespace:app" Title="MainWindow" Height="350" Width="525"> <Grid> <i:NativeWindow></i:NativeWindow> </Grid> </Window> 

 #include <d2d1.h> namespace lib { class Renderer { public: ~Renderer() { if (factory) factory->Release(); if (target) target->Release(); } bool Initialize(HWND handle) { RECT rect; if (!GetClientRect(handle, &rect)) return false; if (FAILED(D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, &factory))) return false; return SUCCEEDED(factory->CreateHwndRenderTarget(D2D1::RenderTargetProperties(), D2D1::HwndRenderTargetProperties(handle, D2D1::SizeU(rect.right - rect.left, rect.bottom - rect.top)), &target)); } void Render() { if (!target) return; target->BeginDraw(); target->Clear(D2D1::ColorF(D2D1::ColorF::Orange)); target->EndDraw(); } void Resize(HWND handle) { if (!target) return; RECT rect; if (!GetClientRect(handle, &rect)) return; D2D1_SIZE_U size = D2D1::SizeU(rect.right - rect.left, rect.bottom - rect.top); target->Resize(size); } private: ID2D1Factory* factory; ID2D1HwndRenderTarget* target; }; public ref class Scene { public: Scene(System::IntPtr handle) { renderer = new Renderer; if (renderer) renderer->Initialize((HWND)handle.ToPointer()); } ~Scene() { delete renderer; } void Resize(System::IntPtr handle) { HWND hwnd = (HWND)handle.ToPointer(); if (renderer) renderer->Resize(hwnd); } void Draw() { if (renderer) renderer->Render(); } private: Renderer* renderer; }; } 

 using lib; //       using System; using System.Runtime.InteropServices; using System.Windows; using System.Windows.Interop; namespace app { public class NativeWindow : HwndHost { public new IntPtr Handle { get; private set; } Procedure procedure; Scene scene; //   Scene   const int WM_PAINT = 0x000F; const int WM_SIZE = 0x0005; [StructLayout(LayoutKind.Sequential)] struct WindowClass { public uint Style; public IntPtr Callback; public int ClassExtra; public int WindowExtra; public IntPtr Instance; public IntPtr Icon; public IntPtr Cursor; public IntPtr Background; [MarshalAs(UnmanagedType.LPWStr)] public string Menu; [MarshalAs(UnmanagedType.LPWStr)] public string Class; } [StructLayout(LayoutKind.Sequential)] struct Rect { public int Left; public int Top; public int Right; public int Bottom; } [StructLayout(LayoutKind.Sequential)] struct Paint { public IntPtr Context; public bool Erase; public Rect Area; public bool Restore; public bool Update; [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)] public byte[] Reserved; } delegate IntPtr Procedure (IntPtr handle, uint message, IntPtr wparam, IntPtr lparam); [DllImport("user32.dll")] static extern IntPtr CreateWindowEx (uint extended, [MarshalAs(UnmanagedType.LPWStr)] string name, [MarshalAs(UnmanagedType.LPWStr)] string caption, uint style, int x, int y, int width, int height, IntPtr parent, IntPtr menu, IntPtr instance, IntPtr param); [DllImport("user32.dll")] static extern IntPtr LoadCursor (IntPtr instance, int name); [DllImport("user32.dll")] static extern IntPtr DefWindowProc (IntPtr handle, uint message, IntPtr wparam, IntPtr lparam); [DllImport("user32.dll")] static extern ushort RegisterClass ([In] ref WindowClass register); [DllImport("user32.dll")] static extern bool DestroyWindow (IntPtr handle); [DllImport("user32.dll")] static extern IntPtr BeginPaint (IntPtr handle, out Paint paint); [DllImport("user32.dll")] static extern bool EndPaint (IntPtr handle, [In] ref Paint paint); protected override HandleRef BuildWindowCore(HandleRef parent) { var callback = Marshal.GetFunctionPointerForDelegate(procedure = WndProc); var width = Convert.ToInt32(ActualWidth); var height = Convert.ToInt32(ActualHeight); var cursor = LoadCursor(IntPtr.Zero, 32512); var menu = string.Empty; var background = new IntPtr(1); var zero = IntPtr.Zero; var caption = string.Empty; var style = 3u; var extra = 0; var extended = 0u; var window = 0x50000000u; var point = 0; var name = "Win32"; var wnd = new WindowClass { Style = style, Callback = callback, ClassExtra = extra, WindowExtra = extra, Instance = zero, Icon = zero, Cursor = cursor, Background = background, Menu = menu, Class = name }; RegisterClass(ref wnd); Handle = CreateWindowEx(extended, name, caption, window, point, point, width, height, parent.Handle, zero, zero, zero); scene = new Scene(Handle); //    Scene return new HandleRef(this, Handle); } protected override void DestroyWindowCore(HandleRef handle) { DestroyWindow(handle.Handle); } protected override IntPtr WndProc(IntPtr handle, int message, IntPtr wparam, IntPtr lparam, ref bool handled) { try { if (message == WM_PAINT) { Paint paint; BeginPaint(handle, out paint); scene.Draw(); //   EndPaint(handle, ref paint); handled = true; } if (message == WM_SIZE) { scene.Resize(handle); //    handled = true; } } catch (Exception e) { MessageBox.Show(e.Message); } return base.WndProc(handle, message, wparam, lparam, ref handled); } static IntPtr WndProc(IntPtr handle, uint message, IntPtr wparam, IntPtr lparam) { return DefWindowProc(handle, message, wparam, lparam); } } }