GDI+开发包，GDI的升级版。

/**************************************************************************\ * * Copyright (c) 1998-2000, Microsoft Corp. All Rights Reserved. * * Module Name: * * GdiplusGraphics.h * * Abstract: * * Declarations for Graphics class * \**************************************************************************/ #ifndef _GDIPLUSGRAPHICS_H #define _GDIPLUSGRAPHICS_H /** * Represent a graphics context */ class Graphics : public GdiplusBase { public: friend class Region; friend class GraphicsPath; friend class Image; friend class Bitmap; friend class Metafile; friend class Font; friend class FontFamily; friend class FontCollection; friend class CachedBitmap; // Get a graphics context from an existing Win32 HDC or HWND static Graphics* FromHDC(IN HDC hdc) { return new Graphics(hdc); } static Graphics* FromHDC(IN HDC hdc, IN HANDLE hdevice) { return new Graphics(hdc, hdevice); } static Graphics* FromHWND(IN HWND hwnd, IN BOOL icm = FALSE) { return new Graphics(hwnd, icm); } static Graphics* FromImage(IN Image *image) { return new Graphics(image); } Graphics(IN HDC hdc) { GpGraphics *graphics = NULL; lastResult = DllExports::GdipCreateFromHDC(hdc, &graphics); SetNativeGraphics(graphics); } Graphics(IN HDC hdc, IN HANDLE hdevice) { GpGraphics *graphics = NULL; lastResult = DllExports::GdipCreateFromHDC2(hdc, hdevice, &graphics); SetNativeGraphics(graphics); } Graphics(IN HWND hwnd, IN BOOL icm = FALSE) { GpGraphics *graphics = NULL; if (icm) { lastResult = DllExports::GdipCreateFromHWNDICM(hwnd, &graphics); } else { lastResult = DllExports::GdipCreateFromHWND(hwnd, &graphics); } SetNativeGraphics(graphics); } Graphics(IN Image* image) { GpGraphics *graphics = NULL; if (image != NULL) { lastResult = DllExports::GdipGetImageGraphicsContext( image->nativeImage, &graphics); } SetNativeGraphics(graphics); } ~Graphics() { DllExports::GdipDeleteGraphics(nativeGraphics); } VOID Flush(IN FlushIntention intention = FlushIntentionFlush) { DllExports::GdipFlush(nativeGraphics, intention); } //------------------------------------------------------------------------ // Interop methods //------------------------------------------------------------------------ // Locks the graphics until ReleaseDC is called HDC GetHDC() { HDC hdc = NULL; SetStatus(DllExports::GdipGetDC(nativeGraphics, &hdc)); return hdc; } VOID ReleaseHDC(IN HDC hdc) { SetStatus(DllExports::GdipReleaseDC(nativeGraphics, hdc)); } //------------------------------------------------------------------------ // Rendering modes //------------------------------------------------------------------------ Status SetRenderingOrigin(IN INT x, IN INT y) { return SetStatus( DllExports::GdipSetRenderingOrigin( nativeGraphics, x, y ) ); } Status GetRenderingOrigin(OUT INT *x, OUT INT *y) const { return SetStatus( DllExports::GdipGetRenderingOrigin( nativeGraphics, x, y ) ); } Status SetCompositingMode(IN CompositingMode compositingMode) { return SetStatus(DllExports::GdipSetCompositingMode(nativeGraphics, compositingMode)); } CompositingMode GetCompositingMode() const { CompositingMode mode; SetStatus(DllExports::GdipGetCompositingMode(nativeGraphics, &mode)); return mode; } Status SetCompositingQuality(IN CompositingQuality compositingQuality) { return SetStatus(DllExports::GdipSetCompositingQuality( nativeGraphics, compositingQuality)); } CompositingQuality GetCompositingQuality() const { CompositingQuality quality; SetStatus(DllExports::GdipGetCompositingQuality( nativeGraphics, &quality)); return quality; } Status SetTextRenderingHint(IN TextRenderingHint newMode) { #ifndef DCR_USE_NEW_186764 /* temporarly set the high bit to warn that we are using the new definition for the flag */ newMode = (TextRenderingHint) (newMode | 0x0f000); #endif // DCR_USE_NEW_186764 return SetStatus(DllExports::GdipSetTextRenderingHint(nativeGraphics, newMode)); } TextRenderingHint GetTextRenderingHint() const { TextRenderingHint hint; SetStatus(DllExports::GdipGetTextRenderingHint(nativeGraphics, &hint)); return hint; } #ifdef DCR_USE_NEW_188922 Status SetTextContrast(IN UINT contrast) { return SetStatus(DllExports::GdipSetTextContrast(nativeGraphics, contrast)); } UINT GetTextContrast() const { UINT contrast; SetStatus(DllExports::GdipGetTextContrast(nativeGraphics, &contrast)); return contrast; } #else Status SetTextGammaValue(IN UINT gammaValue) { return SetStatus(DllExports::GdipSetTextGammaValue(nativeGraphics, gammaValue)); } UINT GetTextGammaValue() const { UINT gammaValue; SetStatus(DllExports::GdipGetTextGammaValue(nativeGraphics, &gammaValue)); return gammaValue; } #endif // DCR_USE_NEW_188922 InterpolationMode GetInterpolationMode() const { InterpolationMode mode = InterpolationModeInvalid; SetStatus(DllExports::GdipGetInterpolationMode(nativeGraphics, &mode)); return mode; } Status SetInterpolationMode(IN InterpolationMode interpolationMode) { return SetStatus(DllExports::GdipSetInterpolationMode(nativeGraphics, interpolationMode)); } SmoothingMode GetSmoothingMode() const { SmoothingMode smoothingMode = SmoothingModeInvalid; SetStatus(DllExports::GdipGetSmoothingMode(nativeGraphics, &smoothingMode)); return smoothingMode; } Status SetSmoothingMode(IN SmoothingMode smoothingMode) { return SetStatus(DllExports::GdipSetSmoothingMode(nativeGraphics, smoothingMode)); } PixelOffsetMode GetPixelOffsetMode() const { PixelOffsetMode pixelOffsetMode = PixelOffsetModeInvalid; SetStatus(DllExports::GdipGetPixelOffsetMode(nativeGraphics, &pixelOffsetMode)); return pixelOffsetMode; } Status SetPixelOffsetMode(IN PixelOffsetMode pixelOffsetMode) { return SetStatus(DllExports::GdipSetPixelOffsetMode(nativeGraphics,