無法使用DirectX捕獲屏幕

AM試圖在VS 2008中使用DirectX進行屏幕截圖。但總是我用來獲取黑色圖像。有人能指出我出去，什麼我的代碼錯誤的發生..我的代碼片段看起來是這樣的：無法使用DirectX捕獲屏幕

void CaptureScreen() 
{ 
IDirect3DDevice9* pDirect3DDevice; 

IDirect3DSurface9* pRenderTarget=NULL; 
IDirect3DSurface9* pDestTarget=NULL; 

D3DDISPLAYMODE d3ddisplaymode; 

D3DPRESENT_PARAMETERS PresentParams; 
memset(&PresentParams, 0, sizeof(D3DPRESENT_PARAMETERS)); 

PresentParams.Windowed = TRUE; 
PresentParams.SwapEffect = D3DSWAPEFFECT_DISCARD; 

HWND h = ::FindWindow(0,"EIML"); 
IDirect3D9* direct=Direct3DCreate9(D3D9b_SDK_VERSION); 
direct->CreateDevice(D3DADAPTER_DEFAULT, 
      D3DDEVTYPE_HAL, 
      h, 
      D3DCREATE_SOFTWARE_VERTEXPROCESSING, 
      &PresentParams,&pDirect3DDevice); 

if (pDirect3DDevice == NULL) 
return; 

HRESULT hr = pDirect3DDevice->GetRenderTarget(0, &pRenderTarget); 

hr = direct->GetAdapterDisplayMode(D3DADAPTER_DEFAULT,&d3ddisplaymode); 

hr = pDirect3DDevice->CreateOffscreenPlainSurface(d3ddisplaymode.Width,d3ddisplaymode.Height,D3DFMT_A8R8G8B8, 
D3DPOOL_SYSTEMMEM, 
&pDestTarget, 
NULL); 

pDirect3DDevice->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &pDestTarget) ; 

hr = pDirect3DDevice->GetRenderTargetData(pRenderTarget,pDestTarget); 

hr = D3DXSaveSurfaceToFile("C:\\Image1.bmp", 
D3DXIFF_BMP, 
pDestTarget, 
NULL, 
NULL); 

pRenderTarget->Release(); 
pDestTarget->Release(); 

}

謝謝。

來源

2013-02-13 Raj_Angadi

下面是如何採取截圖：

IDirect3DSurface9 *offscreenSurface; 
d3dDevice->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &offscreenSurface); 
D3DXSaveSurfaceToFile(filename, D3DXIFF_BMP, offscreenSurface, 0, 0)

來源

2013-02-14 19:21:51 pauld

喜即使我正在嘗試使用directx捕獲backbuffer的屏幕截圖。您可以請我幫助我一個MCVE或重定向到一個示例調試代碼，我可以嘗試使用'GetBackBuffer'來捕獲桌面屏幕截圖。 – newbie2015 2015-09-27 19:25:20

無法使用DirectX捕獲屏幕

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