将CString字符串输入转化成整数的实现方法
如下所示:
BOOL IsHexFormat(LPCTSTR pStr)
{
if (pStr[0] == L'0' && ((pStr[1] == L'x') || (pStr[1] == L'X'))){
return TRUE;
}
return FALSE;
}
BOOL IsInputValid(LPCTSTR pStr)
{
int i;
BOOL res;
BOOL IsHex;
i = 0;
res = TRUE;
IsHex = IsHexFormat(pStr);
while (pStr[i] != L'\0'){
if (pStr[i] >= L'0' && pStr[i] <= L'9'){
i++;
continue;
}
else if (IsHex && (i == 1)){
i++;
continue;
}
else if (IsHex &&
((pStr[i] >= L'a' && pStr[i] <= L'f') ||
(pStr[i] >= L'A' && pStr[i] <= L'F') )) {
i++;
continue;
}
else{
res = FALSE;
break;
}
}
return res;
}
UINT32 CStrHex2Uint32(LPCTSTR pStr)
{
int i = 0;
UINT32 res = 0;
while (pStr[i] != L'\0'){
if (pStr[i] >= L'0' && pStr[i] <= L'9'){
res = res * 16 + pStr[i] - L'0';
}
else if (pStr[i] >= L'a' && pStr[i] <= L'f'){
res = res * 16 + pStr[i] - L'a' + 10;
}
else if (pStr[i] >= L'A' && pStr[i] <= L'F'){
res = res * 16 + pStr[i] - L'A' + 10;
}
else{
break;
}
i++;
}
return res;
}
/* 将CString转化成UINT32, 0x开头的识别成十六进制,其它为十进制*/
BOOL CStr2Uint32(CString str, UINT32 *pData)
{
LPCTSTR pStr;
pStr = (LPCTSTR)str;
if (!IsInputValid(pStr)){
*pData = 0;
return FALSE;
}
if (IsHexFormat(pStr)){
UINT32 Data;
pStr = &pStr[2];
*pData = CStrHex2Uint32(pStr);
}
else{
*pData = _wtoi((wchar_t *)pStr);
}
return TRUE;
}
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