如何获取C ++接口VMT的地址

分类：编程问答

如何解决如何获取C ++接口VMT的地址

上下文：

我正在尝试使用Delphi应用程序中的一些COM接口（Direct2D 1.1）。为此，我必须将接口移植到Delphi。我已经做到了，但是我对其中一个接口有疑问：我调用的方法不正确。我通过在C ++和Delphi中编写完全相同的代码来验证这一点。在调试器下运行这两个程序，我发现Delphi调用的代码与C ++调用的代码不同。所以我在移植该接口时犯了一个错误。

要找出我的错误在哪里，我想到了转储所有方法指针以比较C ++和Delphi显示的地址的想法。它们应该与指向相同DLL的点相同。

我不知道如何使用VMT！ 我已经读过this，但不适用于我的情况：.h文件不包含C等效项。

我正在寻找与用于检查结构的offsetof（）和sizeof（）类似的东西。还有一些获取给定接口方法地址的东西。

任何帮助表示赞赏。 PS：我希望我的英语是可以理解的。

解决方法

我找到了解决方案，所以我将回答我自己的问题：

以下是将指针为变量“ Screen”的接口的VMT加载到指针VMT数组中所需的代码。该代码假定有93个方法（实际上是这种情况）。我还不知道如何获取给定接口中方法的数量以完全自动化该过程。

UINT_PTR* Ptr1 = reinterpret_cast<UINT_PTR*>(Screen);
UINT_PTR* Ptr2 = reinterpret_cast<UINT_PTR*>(*Ptr1);
UINT_PTR* VMT[92];
for (UINT I = 0; I < ARRAYSIZE(VMT); I++) {
    VMT[I] = reinterpret_cast<UINT_PTR*>(*Ptr2);
    Ptr2++;
}

我通过使用调试器并加载Windows符号验证了此代码是否正确。这在VMT中给出了以下结果：

+       [0] 0x6dd34e90 {d2d1.dll!ComObjectImpl<class RefCountedObject<class D2DDeviceContext,struct LockingRequired,struct LockFactoryOnReferenceReachedZero>,class type_list<struct ID2D1DeviceContext6,class type_list<struct ID2D1DeviceContext5,class type_list<struct ID2D1DeviceContext4,class type_list<struct ID2D1DeviceContext3,class type_list<struct ID2D1DeviceContext2,class type_list<struct ID2D1DeviceContext1,class type_list<struct ID2D1DeviceContext,class type_list<class IRenderTargetInternal,class type_list<struct ID2D1GdiInteropRenderTarget,class type_list<struct ID2D1ImagingDeviceContext,class type_list<struct ID2D1PrivateCompositorDeviceContext,class type_list<struct ID2D1PrivatePencilDeviceContext,class type_list<struct ID2D1PrivateTestDeviceContext,class type_list<struct ID2D1PrivateInkingDeviceContext,class type_list<struct CompoundCast<struct ID2D1RenderTarget,struct ID2D1DeviceContext6>,class type_list<struct CompoundCast<struct ID2D1Resource,class null_type> > > > > > > > > > > > > > > > >::QueryInterface(struct _GUID const &,void * *)} {...}    unsigned int *
+       [1] 0x6dd208e0 {d2d1.dll!RefCountedObject<class D2DDeviceContext,struct LockFactoryOnReferenceReachedZero>::AddRef(void)} {...}  unsigned int *
+       [2] 0x6dcfc150 {d2d1.dll!RefCountedObject<class D2DDeviceContext,struct LockFactoryOnReferenceReachedZero>::Release(void)} {...} unsigned int *
+       [3] 0x6dda0aa0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::GetFactory(struct ID2D1Factory * *)const } {...}   unsigned int *
+       [4] 0x6dd99f40 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::CreateBitmap(struct D2D_SIZE_U,void const *,unsigned int,struct D2D1_BITMAP_PROPERTIES const *,struct ID2D1Bitmap * *)} {...}  unsigned int *
+       [5] 0x6dd29d40 {d2d1.dll!D2DDeviceContextBase<...>::CreateBitmapFromWicBitmap(void)} {2337640550}   unsigned int *
+       [6] 0x6dd9cce0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::CreateSharedBitmap(struct _GUID const &,void *,struct ID2D1Bitmap * *)} {...}    unsigned int *
+       [7] 0x6dc75440 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::CreateBitmapBrush(struct ID2D1Bitmap *,struct D2D1_BITMAP_BRUSH_PROPERTIES const *,struct D2D1_BRUSH_PROPERTIES const *,struct ID2D1BitmapBrush * *)} {...}    unsigned int *
+       [8] 0x6dcfe940 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::CreateSolidColorBrush(struct _D3DCOLORVALUE const *,struct ID2D1SolidColorBrush * *)} {...}   unsigned int *
+       [9] 0x6dd9b7a0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::CreateGradientStopCollection(struct D2D1_GRADIENT_STOP const *,enum D2D1_GAMMA,enum D2D1_EXTEND_MODE,struct ID2D1GradientStopCollection * *)} {...}   unsigned int *
+       [10]    0x6dd9c490 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::CreateLinearGradientBrush(struct D2D1_LINEAR_GRADIENT_BRUSH_PROPERTIES const *,struct ID2D1GradientStopCollection *,struct ID2D1LinearGradientBrush * *)} {...}   unsigned int *
+       [11]    0x6dd9ca10 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::CreateRadialGradientBrush(struct D2D1_RADIAL_GRADIENT_BRUSH_PROPERTIES const *,struct ID2D1RadialGradientBrush * *)} {...}   unsigned int *
+       [12]    0x6dd9aec0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::CreateCompatibleRenderTarget(struct D2D_SIZE_F const *,struct D2D_SIZE_U const *,struct D2D1_PIXEL_FORMAT const *,enum D2D1_COMPATIBLE_RENDER_TARGET_OPTIONS,struct ID2D1BitmapRenderTarget * *)} {...}    unsigned int *
+       [13]    0x6dd9c330 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::CreateLayer(struct D2D_SIZE_F const *,struct ID2D1Layer * *)} {...}    unsigned int *
+       [14]    0x6dd9c6c0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::CreateMesh(struct ID2D1Mesh * *)} {...}    unsigned int *
+       [15]    0x6dd9e5e0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::DrawLine(struct D2D_POINT_2F,struct D2D_POINT_2F,struct ID2D1Brush *,float,struct ID2D1StrokeStyle *)} {...}   unsigned int *
+       [16]    0x6dd158b0 {d2d1.dll!D2DDeviceContextBase<...>::DrawRectangle(void)} {2337640550}   unsigned int *
+       [17]    0x6dd12700 {d2d1.dll!D2DDeviceContextBase<...>::FillRectangle(void)} {2337640550}   unsigned int *
+       [18]    0x6dd9e920 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::DrawRoundedRectangle(struct D2D1_ROUNDED_RECT const *,struct ID2D1StrokeStyle *)} {...}  unsigned int *
+       [19]    0x6dd9fa50 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::FillRoundedRectangle(struct D2D1_ROUNDED_RECT const *,struct ID2D1Brush *)} {...}  unsigned int *
+       [20]    0x6dd9db00 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::DrawEllipse(struct D2D1_ELLIPSE const *,struct ID2D1StrokeStyle *)} {...}    unsigned int *
+       [21]    0x6dd9f3d0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::FillEllipse(struct D2D1_ELLIPSE const *,struct ID2D1Brush *)} {...}    unsigned int *
+       [22]    0x6dcd8c00 {d2d1.dll!D2DDeviceContextBase<...>::DrawGeometry(void)} {2337640550}    unsigned int *
+       [23]    0x6dcd1660 {d2d1.dll!D2DDeviceContextBase<...>::FillGeometry(void)} {2337640550}    unsigned int *
+       [24]    0x6dd9f5f0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::FillMesh(struct ID2D1Mesh *,struct ID2D1Brush *)} {...}    unsigned int *
+       [25]    0x6dd9f800 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::FillOpacityMask(struct ID2D1Bitmap *,enum D2D1_OPACITY_MASK_CONTENT,struct D2D_RECT_F const *,struct D2D_RECT_F const *)} {...}    unsigned int *
+       [26]    0x6dd12080 {d2d1.dll!D2DDeviceContextBase<...>::DrawBitmap(void)} {2337640550}  unsigned int *
+       [27]    0x6dcfafb0 {d2d1.dll!D2DDeviceContextBase<...>::DrawTextW(void)} {2337640550}   unsigned int *
+       [28]    0x6dd9ef40 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::DrawTextLayout(struct D2D_POINT_2F,struct IDWriteTextLayout *,enum D2D1_DRAW_TEXT_OPTIONS)} {...}  unsigned int *
+       [29]    0x6dc807c0 {d2d1.dll!D2DDeviceContextBase<...>::DrawGlyphRun(void)} {2337640550}    unsigned int *
+       [30]    0x6dc7f650 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::SetTransform(struct D2D_MATRIX_3X2_F const *)} {...}   unsigned int *
+       [31]    0x6dcfbe30 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::GetTransform(struct D2D_MATRIX_3X2_F *)const } {...}   unsigned int *
+       [32]    0x6dcfcbb0 {d2d1.dll!D2DDeviceContextBase<...>::SetAntialiasMode(void)} {2337640550}    unsigned int *
+       [33]    0x6dcfcd70 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::GetAntialiasMode(void)const } {...}    unsigned int *
+       [34]    0x6dda3cf0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::SetTextAntialiasMode(enum D2D1_TEXT_ANTIALIAS_MODE)} {...} unsigned int *
+       [35]    0x6dcfcf00 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::GetTextAntialiasMode(void)const } {...}    unsigned int *
+       [36]    0x6dcfd870 {d2d1.dll!D2DDeviceContextBase<...>::SetTextRenderingParams(void)} {2337640550}  unsigned int *
+       [37]    0x6dda1b40 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::GetTextRenderingParams(struct IDWriteRenderingParams * *)const } {...} unsigned int *
+       [38]    0x6dda3a90 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::SetTags(unsigned __int64,unsigned __int64)} {...}  unsigned int *
+       [39]    0x6dda1a40 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::GetTags(unsigned __int64 *,unsigned __int64 *)const } {...}    unsigned int *
+       [40]    0x6dda2ac0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::PushLayer(struct D2D1_LAYER_PARAMETERS const *,struct ID2D1Layer *)} {...} unsigned int *
+       [41]    0x6dd15c30 {d2d1.dll!D2DDeviceContextBase<...>::PopLayer(void)} {2337640550}    unsigned int *
+       [42]    0x6dd13570 {d2d1.dll!D2DDeviceContextBase<...>::Flush(void)} {2337640550}   unsigned int *
+       [43]    0x6dd189f0 {d2d1.dll!D2DDeviceContextBase<...>::SaveDrawingState(void)} {2337640550}    unsigned int *
+       [44]    0x6dcfc180 {d2d1.dll!D2DDeviceContextBase<...>::RestoreDrawingState(void)} {2337640550} unsigned int *
+       [45]    0x6dcf49d0 {d2d1.dll!D2DDeviceContextBase<...>::PushAxisAlignedClip(void)} {2337640550} unsigned int *
+       [46]    0x6dd13340 {d2d1.dll!D2DDeviceContextBase<...>::PopAxisAlignedClip(void)} {2337640550}  unsigned int *
+       [47]    0x6dcdb410 {d2d1.dll!D2DDeviceContextBase<...>::Clear(void)} {2337640550}   unsigned int *
+       [48]    0x6dcd8720 {d2d1.dll!D2DDeviceContextBase<...>::BeginDraw(void)} {2337640550}   unsigned int *
+       [49]    0x6dcd8900 {d2d1.dll!D2DDeviceContextBase<...>::EndDraw(void)} {2337640550} unsigned int *
+       [50]    0x6dcd2b80 {d2d1.dll!D2DDeviceContextBase<ID2D1DeviceContext6,ID2D1DeviceContext6,null_type>::GetPixelFormat(void)} {...}   unsigned int *
+       [51]    0x6dc81160 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::SetDpi(float,float)} {...} unsigned int *
+       [52]    0x6dcfbd00 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::GetDpi(float *,float *)const } {...}   unsigned int *
+       [53]    0x6dda1710 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::GetSize(void)const } {...} unsigned int *
+       [54]    0x6dcd2230 {d2d1.dll!D2DDeviceContextBase<ID2D1DeviceContext6,null_type>::GetPixelSize(void)} {...} unsigned int *
+       [55]    0x6dda12d0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::GetMaximumBitmapSize(void)const } {...}    unsigned int *
+       [56]    0x6dda1f40 {d2d1.dll!D2DDeviceContextBase<struct ID2D1BitmapRenderTarget,struct ID2D1DeviceContext6>::IsSupported(struct D2D1_RENDER_TARGET_PROPERTIES const *)const } {...} unsigned int *
+       [57]    0x6dc89b50 {d2d1.dll!D2DDeviceContextBase<ID2D1DeviceContext6,null_type>::CreateBitmap(void)} {...} unsigned int *
+       [58]    0x6dcfe7f0 {d2d1.dll!D2DDeviceContextBase<ID2D1DeviceContext6,null_type>::CreateBitmapFromWicBitmap(void)} {...}    unsigned int *
+       [59]    0x6dda59d0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,struct ID2D1DeviceContext6,class null_type>::CreateColorContext(enum D2D1_COLOR_SPACE,unsigned char const *,struct ID2D1ColorContext * *)} {...}  unsigned int *
+       [60]    0x6dc835c0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::CreateColorContextFromFilename(unsigned short const *,struct ID2D1ColorContext * *)} {...}    unsigned int *
+       [61]    0x6dda5ce0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::CreateColorContextFromWicColorContext(struct IWICColorContext *,struct ID2D1ColorContext * *)} {...}  unsigned int *
+       [62]    0x6dcad780 {d2d1.dll!D2DDeviceContextBase<ID2D1DeviceContext6,null_type>::CreateBitmapFromDxgiSurface(void)} {...}  unsigned int *
+       [63]    0x6dcdce60 {d2d1.dll!D2DDeviceContextBase<ID2D1DeviceContext6,null_type>::CreateEffect(void)} {...} unsigned int *
+       [64]    0x6dda6230 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::CreateGradientStopCollection(struct D2D1_GRADIENT_STOP const *,enum D2D1_COLOR_SPACE,enum D2D1_BUFFER_PRECISION,enum D2D1_COLOR_INTERPOLATION_MODE,struct ID2D1GradientStopCollection1 * *)} {...}   unsigned int *
+       [65]    0x6dc7d8b0 {d2d1.dll!D2DDeviceContextBase<ID2D1DeviceContext6,null_type>::CreateImageBrush(void)} {...} unsigned int *
+       [66]    0x6dc75640 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::CreateBitmapBrush(struct ID2D1Bitmap *,struct D2D1_BITMAP_BRUSH_PROPERTIES1 const *,struct ID2D1BitmapBrush1 * *)} {...} unsigned int *
+       [67]    0x6dc7d410 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::CreateCommandList(struct ID2D1CommandList * *)} {...} unsigned int *
+       [68]    0x6dc7a100 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::IsDxgiFormatSupported(enum DXGI_FORMAT)const } {...}  unsigned int *
+       [69]    0x6dc80620 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::IsBufferPrecisionSupported(enum D2D1_BUFFER_PRECISION)const } {...}   unsigned int *
+       [70]    0x6dc6d0b0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::GetImageLocalBounds(struct ID2D1Image *,struct D2D_RECT_F *)const } {...} unsigned int *
+       [71]    0x6dda8a10 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::GetImageWorldBounds(struct ID2D1Image *,struct D2D_RECT_F *)const } {...} unsigned int *
+       [72]    0x6dcaad10 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::GetGlyphRunWorldBounds(struct D2D_POINT_2F,struct DWRITE_GLYPH_RUN const *,enum DWRITE_MEASURING_MODE,struct D2D_RECT_F *)const } {...}   unsigned int *
+       [73]    0x6dc7e2a0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::GetDevice(struct ID2D1Device * *)const } {...}    unsigned int *
+       [74]    0x6dcdc240 {d2d1.dll!D2DDeviceContextBase<ID2D1DeviceContext6,null_type>::SetTarget(void)} {...}    unsigned int *
+       [75]    0x6dc84990 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::GetTarget(struct ID2D1Image * *)const } {...} unsigned int *
+       [76]    0x6dc804a0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::SetRenderingControls(struct D2D1_RENDERING_CONTROLS const *)} {...}   unsigned int *
+       [77]    0x6dc832e0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::GetRenderingControls(struct D2D1_RENDERING_CONTROLS *)const } {...}   unsigned int *
+       [78]    0x6dcfc740 {d2d1.dll!D2DDeviceContextBase<ID2D1DeviceContext6,null_type>::SetPrimitiveBlend(void)} {...}    unsigned int *
+       [79]    0x6dc7cd70 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::GetPrimitiveBlend(void)const } {...}  unsigned int *
+       [80]    0x6dcfc810 {d2d1.dll!D2DDeviceContextBase<ID2D1DeviceContext6,null_type>::SetUnitMode(void)} {...}  unsigned int *
+       [81]    0x6dcfbda0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::GetUnitMode(void)const } {...}    unsigned int *
+       [82]    0x6dcaaf30 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::DrawGlyphRun(struct D2D_POINT_2F,struct DWRITE_GLYPH_RUN_DESCRIPTION const *,enum DWRITE_MEASURING_MODE)} {...}   unsigned int *
+       [83]    0x6dcda160 {d2d1.dll!D2DDeviceContextBase<ID2D1DeviceContext6,null_type>::DrawImage(void)} {...}    unsigned int *
+       [84]    0x6dda78d0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::DrawGdiMetafile(struct ID2D1GdiMetafile *,struct D2D_POINT_2F const *)} {...} unsigned int *
+       [85]    0x6dda76a0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::DrawBitmap(struct ID2D1Bitmap *,enum D2D1_INTERPOLATION_MODE,struct D2D_MATRIX_4X4_F const *)} {...}    unsigned int *
+       [86]    0x6dd0fac0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::PushLayer(struct D2D1_LAYER_PARAMETERS1 const *,struct ID2D1Layer *)} {...}   unsigned int *
+       [87]    0x6dc66a30 {d2d1.dll!D2DDeviceContextBase<ID2D1DeviceContext6,null_type>::InvalidateEffectInputRectangle(void)} {...}   unsigned int *
+       [88]    0x6dc63180 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::GetEffectInvalidRectangleCount(struct ID2D1Effect *,unsigned int *)} {...}    unsigned int *
+       [89]    0x6dc634d0 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::GetEffectInvalidRectangles(struct ID2D1Effect *,struct D2D_RECT_F *,unsigned int)} {...}  unsigned int *
+       [90]    0x6dc62b50 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::GetEffectRequiredInputRectangles(struct ID2D1Effect *,struct D2D1_EFFECT_INPUT_DESCRIPTION const *,unsigned int)} {...} unsigned int *
+       [91]    0x6dda8420 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::FillOpacityMask(struct ID2D1Bitmap *,struct D2D_RECT_F const *)} {...}  unsigned int *
+       [92]    0x6dda5f90 {d2d1.dll!D2DDeviceContextBase<struct ID2D1DeviceContext6,class null_type>::CreateFilledGeometryRealization(struct ID2D1Geometry *,struct ID2D1GeometryRealization * *)} {...}  unsigned int *

您可以看到前3个条目是QueryInterface，AddRef和Release方法，这是所有接口在其VMT中的功能。

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报错如下，gcc版本太低 ^ server.c:5346:31: 错误：‘struct redisServer’没有名为‘server_cpulist’的成员 redisSetCpuAffinity(server.server_cpulist); ^ server.c: 在函数‘hasActiveC
微服务启动错误：Command line is too long. Shorten command line for
解决方案1 1、改项目中.idea/workspace.xml配置文件，增加dynamic.classpath参数 2、搜索PropertiesComponent，添加如下 &lt;property name=&quot;dynamic.classpath&quot; value=&quot;tru
vue常见错误
删除根组件app.vue中的默认代码后报错：Module Error (from ./node_modules/eslint-loader/index.js): 解决方案：关闭ESlint代码检测，在项目根目录创建vue.config.js，在文件中添加 module.exports = { lin
spark常见错误
查看spark默认的python版本 [root@master day27]# pyspark /home/software/spark-2.3.4-bin-hadoop2.7/conf/spark-env.sh: line 2: /usr/local/hadoop/bin/hadoop: No s
matplotlib报错：AttributeError: module 'backend_interagg' has no attribute 'FigureCanvas'. Did you mean: 'FigureCanvasAgg'?
使用本地python环境可以成功执行 import pandas as pd import matplotlib.pyplot as plt # 设置字体 plt.rcParams[&#39;font.sans-serif&#39;] = [&#39;SimHei&#39;] # 能正确显示负号 p
gitlab登录失败，报错：This challenge page was accidentally cached by an intermediary and is no longer available.
设置时间 控制面板
后端开发常见错误
错误1：Request method ‘DELETE‘ not supported 错误还原：controller层有一个接口，访问该接口时报错：Request method ‘DELETE‘ not supported 错误原因：没有接收到前端传入的参数，修改为如下 参考 错误2：cannot r
docker常见错误
错误1：启动docker镜像时报错：Error response from daemon: driver failed programming external connectivity on endpoint quirky_allen 解决方法：重启docker -&gt; systemctl r
idea常见错误
错误1：private field ‘xxx‘ is never assigned 按Altʾnter快捷键，选择第2项 参考：https://blog.csdn.net/shi_hong_fei_hei/article/details/88814070 错误2：启动时报错，不能找到主启动类 #
pip安装依赖失败
报错如下，通过源不能下载，最后警告pip需升级版本 Requirement already satisfied: pip in c:\users\ychen\appdata\local\programs\python\python310\lib\site-packages (22.0.4) Coll
maven常见错误
错误1：maven打包报错 错误还原：使用maven打包项目时报错如下 [ERROR] Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources (default-resources)
cloud项目中常见错误
错误1：服务调用时报错 服务消费者模块assess通过openFeign调用服务提供者模块hires 如下为服务提供者模块hires的控制层接口 @RestController @RequestMapping(&quot;/hires&quot;) public class FeignControl
springboot常见错误
错误1：运行项目后报如下错误 解决方案 报错2：Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project sb 解决方案：在pom.
springmvc拦截器中使用redisTemplate报空指针异常
参考 错误原因 过滤器或拦截器在生效时，redisTemplate还没有注入 解决方案：在注入容器时就生效 @Component //项目运行时就注入Spring容器 public class RedisBean { @Resource private RedisTemplate&lt;String
vite报错：npm ERR! command C:WINDOWSsystem32cmd.exe /d /s /c C:UsersychenAppDataLocalTempnpx-dde1c848.cmd
使用vite构建项目报错 C:\Users\ychen\work&gt;npm init @vitejs/app @vitejs/create-app is deprecated, use npm init vite instead C:\Users\ychen\AppData\Local\npm-
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