_____________ DDSURFACEDESC______ ddsd;

_____________ LPWORD_____________ lpSurface;

_____________ HRESULT____________ ddrval;

 __

_____________ ddsd.dwSize = sizeof(ddsd);

_____________

_____________ while((ddrval=surf->Lock(NULL, &ddsd, 0, NULL))==DDERR_WASSTILLDRAWING);

_____________ if(ddrval == DD_OK)

_____________ _____________ lpSurface = (LPWORD)ddsd.lpSurface;

_____________ for(i = 0; i<HzNum; i++)

_____________ {_____________

_____________ _____________ QuHao = Str[i*2]-160;

_____________ _____________ WeiHao = Str[i*2+1]-160;

_____________ _____________ offset = ((QuHao - 1) * 94 + (WeiHao-1))*32;

_____________ _____________ fseek(HzkFp, offset, SEEK_SET);

_____________ _____________ fread(dotBuffer, 32, 1, HzkFp);

_____________ _____________ for(j=0;j<16;j++)

_____________ _____________ _____________ for(k=0;k<2;k++)

_____________ _____________ _____________ _____________ for(m=0;m<8;m++)

_____________ _____________ _____________ _____________ _____________ if(dotBuffer[j*2+k] & Mask[m])

_____________ _____________ _____________ _____________ _____________ {

_____________ _____________ _____________ _____________ _____________ _____________ lpSurface[ddsd.lPitch*(y+j+1) + x+k*8+m] = 0x000000;

_____________ _____________ _____________ _____________ _____________ }

_____________ _____________ x+=16;

_____________ }

_____________ surf->Unlock(NULL);

_____________ fclose(HzkFp);

}

其实原理很简单：

1.         打开字库

2.         计算字符串长度（这个函数只支持中文），并且Lock Surface

3.         依次计算出每个汉字所对应的区码和位码（汉字的第1个字节是区码，第2个字节就是位码），然后通过公式计算出这个汉字在字库中的偏移量：offset = ((QuHao - 1) * 94 + (WeiHao-1))*32;

4.         读出一个32个字节的点阵

5.         绘制到Surface上

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