我试图在D3DSURFACE9中设置单个像素，但它们到处都是。我想我以前做过这个，但这次似乎做不好。3DLOCKED_RECTlrt;if(D3D_OK==lpThis->sfRenderingCanvas->LockRect(&lrt,NULL,0)){UINTpitch=lrt.Pitch;VOID*data;data=lrt.pBits;UINTY=(UINT)xmsg.Y;UINTX=(UINT)xmsg.X;for(intz=0;xmsg.iNum;z++){if(xmsg.iDataBlock[z]>0)((DWORD*)data)[X+Y*pitch+z]=0xFFFFF