请问哪位高人有gb转UTF-8的MFC代码,谢谢

[zy2015036]

网上找了一圈,都不好用的..
gb转UTF-8的..
谢谢大家了.

[zwfgdlc]

首先要把GBK转志UNICODE，再UNICODE转UTF8.

[zy2015036]

有代码吗楼上的高人..我就是找不见代码 不会啊..

[kyotrue]

MultiByteToWideChar先把GB转换成UNICODE,然后WideCharToMultiByte把UNICODE转换成UTF-8
查MSDN可获知CodePage的值

[zwfgdlc]

void GbkToUtf8(CHAR* GbkStr, CHAR* Utf8Str)
{
	INT cchWideChar = 0;
	LPWSTR lpWideCharStr = NULL;
	INT cbMultiByteStr = 0;

	cchWideChar = MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, GbkStr, -1, lpWideCharStr, 0);
	lpWideCharStr = new WCHAR[cchWideChar];
	MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, GbkStr, -1, lpWideCharStr, cchWideChar);

	cbMultiByteStr = WideCharToMultiByte(CP_UTF8, 0, lpWideCharStr, -1, Utf8Str, 0, 0, FALSE);
	WideCharToMultiByte(CP_UTF8, 0, lpWideCharStr, -1, Utf8Str, cbMultiByteStr, 0, 0);

	delete [] lpWideCharStr;
}

随便写的，自己有需要改进下。
用法：

	CHAR utf8[256] = {0};
	GbkToUtf8("中国", utf8);

[ZhouBoTong]

mark

[zy2015036]

请教各位高人,我半年没写代码了,
提示这个error C3861: “GbkToUtf8”: 找不到标识符
我是这么写这个函数的..
void CAotoCallDlg::GbkToUtf8(CHAR* GbkStr, CHAR* Utf8Str)
{
INT cchWideChar = 0;
LPWSTR lpWideCharStr = NULL;
INT cbMultiByteStr = 0;

cchWideChar = MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, GbkStr, -1, lpWideCharStr, 0);
lpWideCharStr = new WCHAR[cchWideChar];
MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, GbkStr, -1, lpWideCharStr, cchWideChar);

cbMultiByteStr = WideCharToMultiByte(CP_UTF8, 0, lpWideCharStr, -1, Utf8Str, 0, 0, FALSE);
WideCharToMultiByte(CP_UTF8, 0, lpWideCharStr, -1, Utf8Str, cbMultiByteStr, 0, 0);

delete [] lpWideCharStr;
}
头文件这么写的
void GbkToUtf8(CHAR* GbkStr, CHAR* Utf8Str);
哪里错了嘛- -半年没写果然忘光了

[写不动代码的人]

有个简单的 你可以用CMarkup 中的AToUTF8

[用户 昵称]

[Quote=引用 6 楼 zy2015036 的回复:]
请教各位高人,我半年没写代码了,
提示这个error C3861: “GbkToUtf8”: 找不到标识符
我是这么写这个函数的..
void CAotoCallDlg::GbkToUtf8(CHAR* GbkStr, CHAR* Utf8Str)
{
INT cchWideChar = 0;
LPWSTR lpWideCharStr = NULL;
INT cbMultiByteS……
[/Quote]
你弄个全局的就行了，用什么成员函数啊。

[zy2015036]

请问弄全局是啥意思的..
我复制了你的函数是一样的啊

[zy2015036]

afx_msg void GbkToUtf8(CHAR* GbkStr, CHAR* Utf8Str);
也不对啊.

[zwfgdlc]

我发的一样,不要void CAotoCallDlg::GbkToUtf8(CHAR* GbkStr, CHAR* Utf8Str)
再不明白,你面壁三天吧.

[zy2015036]

..................
我明白了....

[zy2015036]

我知道我错误出在哪里了..我把这个函数放在了LRESULT CALLBACK中调用...结果提示了
找不到标识符
这个错误..

[lcyw]

int ConvertStringToUTF8 (LPCTSTR lpSource,int nDataLen, LPSTR lpUtf8)
{
int nCodePage = 936;
if (NULL == lpSource || NULL == lpUtf8)
return E_INVALIDARG;
int nWideCharCount = 0;

DWORD dwError = 0;
WCHAR *pWideChar = NULL;

int nRet = MultiByteToWideChar (nCodePage, 0, lpSource, nDataLen, NULL, nWideCharCount);
if (0 == nRet)
{
dwError = GetLastError ();
return -1;
}
nWideCharCount = nRet + 2;
pWideChar = new WCHAR [nWideCharCount];
if (NULL == pWideChar)
return -2;

nRet = MultiByteToWideChar (nCodePage, 0, lpSource, nDataLen, pWideChar, nWideCharCount);
if (0 == nRet)
{
dwError = GetLastError ();
SAFE_ARRAYDELETE (pWideChar);
return -3;
}
nWideCharCount = nRet;
int nUtf8Len = 0;

nRet = WideCharToMultiByte(CP_UTF8, 0, pWideChar, nWideCharCount, lpUtf8, nUtf8Len, 0, 0);
if (0 == nRet)
{
dwError = GetLastError ();
SAFE_ARRAYDELETE (pWideChar);
return -4;
}
nUtf8Len = nRet + 2;
nRet = WideCharToMultiByte(CP_UTF8, 0, pWideChar, nWideCharCount, lpUtf8, nUtf8Len, 0, 0);
if (0 == nRet)
{
dwError = GetLastError ();
SAFE_ARRAYDELETE (pWideChar);
return -4;
}

SAFE_ARRAYDELETE (pWideChar);

return nRet;

}

int ConvertUTF8ToString (LPCTSTR lpUtf8,int nDataLen, LPSTR lpDest)
{
int nCodePage = 936;
if (NULL == lpDest || NULL == lpUtf8)
return E_INVALIDARG;

int nWideCharCount = 0;
DWORD dwError = 0;
WCHAR *pWideChar = NULL;
int nRet = MultiByteToWideChar (CP_UTF8, 0, lpUtf8, nDataLen, NULL, nWideCharCount);
if (0 == nRet)
{
dwError = GetLastError ();
return -1;
}
nWideCharCount = nRet + 2;
pWideChar = new WCHAR [nWideCharCount];
if (NULL == pWideChar)
return -2;
nRet = MultiByteToWideChar (CP_UTF8, 0, lpUtf8,nDataLen, pWideChar, nWideCharCount);
if (0 == nRet)
{
dwError = GetLastError ();
SAFE_ARRAYDELETE (pWideChar);
return -3;
}
nWideCharCount = nRet;
int nDestLen = 0;
nRet = WideCharToMultiByte(nCodePage, 0, pWideChar, nWideCharCount, lpDest, nDestLen, 0, 0);
if (0 == nRet)
{
dwError = GetLastError ();
SAFE_ARRAYDELETE (pWideChar);
return -4;
}
nDestLen = nRet + 2;
nRet = WideCharToMultiByte(nCodePage, 0, pWideChar, nWideCharCount, lpDest, nDestLen, 0, 0);
if (0 == nRet)
{
dwError = GetLastError ();
SAFE_ARRAYDELETE (pWideChar);
return -4;
}
SAFE_ARRAYDELETE (pWideChar);
return nRet;
}