GetGlyphOutline如何获取汉字的点阵数据？

[fulltimeangel]

最近的工作要用到windows api取汉字的点阵数据，我查阅了一些资料，能去除英文字母的点阵数据，但无法正确地取出汉字的点阵数据。

核心代码段如下：

case WM_PAINT:
hdc = BeginPaint (hwnd, &ps) ;
//hdc=GetDC(hwnd);
//hFont=(HFONT)GetStockObject(DEFAULT_GUI_FONT);
hFont = EzCreateFont (hdc, TEXT ("楷体_GB2312"), 1440, 0, 0, TRUE) ;
oldFont=(HFONT)SelectObject(hdc,hFont);

//hFont=GetFont();
//oldFont=(HFONT)SelectObject(hdc,hfont);

MAT2 mat2;
mat2.eM11 = FixedFromDouble(2);
mat2.eM12 = FixedFromDouble(0);
mat2.eM21 = FixedFromDouble(0);
mat2.eM22 = FixedFromDouble(2);

GLYPHMETRICS gm;
//chText=L'W';
//chText =L'A';
chText=L'泰';
//ch=str[0] < <8|(str[1]&0xff);






dwBufSize=GetGlyphOutline(hdc,chText,GGO_BITMAP,&gm,0,NULL,&mat2);
lpszFunction="GetGlyphOutline";

//dw = GetLastError();
//if(dw!=0)
//{
// sprintf(szBuf, "%s failed: GetLastError returned %u\n",
// lpszFunction, dw);
//
// MessageBox(NULL, szBuf, "Error", MB_OK);
// ExitProcess(dw);
// }
if(dwBufSize!=GDI_ERROR)
{
if(dwBufSize>0 && dwBufSize<0xFFFF)
{
//char* lpBuf=NULL;
//lpBuf=(char*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,dwBufSize);
//板卡控制
// rtn=GT_Open(0);
//rtn=GT_Reset();
// rtn=GT_ScanCrdClear(0);


LPBYTE lpBuf=(LPBYTE)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,dwBufSize);


if(lpBuf)
{

GetGlyphOutline(hdc,chText,GGO_BITMAP,&gm,dwBufSize,lpBuf,&mat2);
...


我个人认为在代码：
chText=L'泰';//此处还应该针对汉字做进一步处理

dwBufSize=GetGlyphOutline(hdc,chText,GGO_BITMAP,&gm,0,NULL,&mat2);//此处实际调用的是GetGlyphOutlineW

[fulltimeangel]

感谢2楼的回复，我仍然未能理解。

[kaizi65535]

可以考虑使用逻辑字体，并指定编码格式

[schlafenhamster]

那就看看“用GetGlyphOutline取字体点阵 - zzz3265的专栏 - CSDN博客zzz3265的专栏”

[fulltimeangel]

请问谁知道chText=L'泰';之后应该再做何种处理？

[schlafenhamster]

//这是“用GetGlyphOutline取字体点阵”内容：
void CtestdlgDlg::OnBnClickedButton6()

{

CDC * pDC;

CString cStr;

CHAR c;

GLYPHMETRICS GpMtic;

BYTE * pBuffer;

DWORD dwBufSize;

MAT2 mat;

CFont font;

CFont * pOldFont;

LOGFONT lf;

DWORD dwRetVal;

int x, y;

BOOL bBit;



c = 'X';

cStr = c;

pDC = this->GetWindowDC();



memset(&lf,0,sizeof(LOGFONT));



lf.lfHeight=180;

lstrcpy(lf.lfFaceName,_T("Times New Roman"));

font.CreateFontIndirect(&lf);



pOldFont = pDC->SelectObject(&font);

pDC->TextOut(0, 0, cStr);



NSys::IdleSleep(200);



memset(&GpMtic, 0, sizeof(GpMtic));

memset(&mat, 0, sizeof(mat));

mat.eM11.value = 1;

mat.eM22.value = 1;



pBuffer = NULL;

dwBufSize = 0;

dwRetVal = pDC->GetGlyphOutline(c, GGO_BITMAP, &GpMtic, dwBufSize, pBuffer, &mat);

if(dwRetVal == -1)

{

NMsg::MsgErr();

goto Done;

}



dwBufSize = dwRetVal;

pBuffer = new BYTE[dwBufSize];

memset(pBuffer, 0, dwBufSize);

dwRetVal = pDC->GetGlyphOutline(c, GGO_BITMAP, &GpMtic, dwBufSize, pBuffer, &mat);

if(dwRetVal == -1)

{

delete [] pBuffer;

goto Done;

}



int nWidth, nHeight;

BYTE *pData;

DWORD dwOneLine;

int dx, dy;



nWidth = GpMtic.gmBlackBoxX;

nHeight = GpMtic.gmBlackBoxY;





TEXTMETRIC TxtMtic;

pDC->GetTextMetrics(&TxtMtic);



dx = GpMtic.gmptGlyphOrigin.x;

dy = TxtMtic.tmAscent - GpMtic.gmptGlyphOrigin.y;



dwOneLine = (nWidth/8 + 3) / 4 * 4;

for(y=0; y<nHeight; y++)

{

for(x=0; x<nWidth; x++)

{

pData = pBuffer + dwOneLine*y + x/8;

bBit = *pData & (1 << 7-(x%8));



if(bBit)

pDC->SetPixel(x+dx, y+dy, RGB(255, 0, 0));

// else

// pDC->SetPixel(x+dx, y+dy, RGB(0, 255, 0));



}

}



delete [] pBuffer;

Done:

pDC->SelectObject(pOldFont);

this->ReleaseDC(pDC);

}

[kaizi65535]

加入预编译指令：
#define NUM 1000
#ifdef UNICODE
#define GetGlyphOutline GetGlyphOutlineW
#else
#define GetGlyphOutline GetGlyphOutlineA
#endif

然后从“工程”-“C\C++”-“预处理程序定义”加入“UNICODE”即可

[fulltimeangel]

大家帮忙解决一下吧，这问题很困扰我。

[schlafenhamster]

//#define UPSIDE_DOWN
void CTtfShowDlg::DrawContour(CDC *pDC,int X, int Y,char* theChar)
{
	GLYPHMETRICS gm;
	MAT2 mat;
/*
MAT2 mat= {{ 0, 1, }, 
           { 0, 0, }, 
           { 0, 0, }, 
           { 0, 1, }};
*/
	mat.eM11=Double2Fixed(1);
	mat.eM12=Double2Fixed(0);
	mat.eM21=Double2Fixed(0);
#ifdef UPSIDE_DOWN
	mat.eM22=Double2Fixed(1);
#else // normal
	mat.eM22=Double2Fixed(-1);
#endif
	POINT Origin={X,Y};
	WCHAR szText[40];
// Copy the string
	MultiByteToWideChar(CP_ACP, 0, theChar, -1, (LPWSTR) szText, 40);
// actually only 1 char.
	for(UINT i=0;szText[i];i++)
	{/* Returns the curve data points in the rasterizer’s native format, using device units. */
		DWORD BufferLen=::GetGlyphOutlineW(pDC->m_hDC,szText[i],GGO_NATIVE,&gm,0,0,&mat);
		if(BufferLen != GDI_ERROR) // 0xFFFFFFFFL
		{//OK
			BYTE *pBuffer=new BYTE[BufferLen];
			DWORD Result=::GetGlyphOutlineW(pDC->m_hDC,szText[i],GGO_NATIVE,&gm,BufferLen,pBuffer,&mat);
// OutLine
			DrawCurve(pDC,pBuffer,BufferLen,gm,Origin);
// if save
			if(m_bSaveToFile)
			{
				m_bSaveToFile=FALSE;
				// + size theApp.m_Ascent
				char Ascent[10];
				sprintf(Ascent,"%d",theApp.m_Ascent);
				strcat(theChar,Ascent);
				SaveGlyphInfo(theChar,pBuffer,BufferLen);
			}
			Origin.x += gm.gmCellIncX;
			Origin.y += gm.gmCellIncY;
			delete[] pBuffer;
		}
	}
}

[fulltimeangel]

感谢10楼的回复，问题总算解决了。