CString與char*轉換(Unicode和多位元組字符集)
阿新 • • 發佈:2018-12-31
一、使用多位元組字符集
1.CString轉char*
(1)傳給未分配記憶體的const char* (LPCTSTR)指標.
CString cstr="ABC";
const char* ch = (LPCTSTR)cstr;
//ch指向的地址和cstr相同。但由於使用const保證ch不會修改,所以安全.
(2)傳給未分配記憶體的指標.
CString cstr = "ABC"; char *ch = cstr.GetBuffer(cstr1.GetLength() + 1); cstr.ReleaseBuffer(); //修改ch指向的值等於修改cstr裡面的值. //PS:用完ch後,不用delete ch,因為這樣會破壞cstr內部空間,容易造成程式崩潰.
(3)把CString 值賦給已分配記憶體的char *。
CString cstr = "ABC";
int strLength = cstr.GetLength() + 1;
char *pValue = new char[strLength];
strncpy(pValue, cstr, strLength);
(4)把CString 值賦給已分配記憶體char[]陣列.
CString cstr= "ABC"; strncpy(chArray, cstr, strLength1); int strLength1 = cstr1.GetLength() + 1; char chArray[100]; memset(chArray,0, sizeof(bool) * 100); //將陣列的垃圾內容清空.
2.char*轉CString
(1)char *p = "abc";
CString str(p);
(2)CString str;
char * p="abc";
str.Format("%s",p);
(3)CString str;
char * p="abc";
p=str;
二、使用Unicode字符集
1.CString轉char*
(1)CString str =_T("123"); int len =WideCharToMultiByte(CP_ACP,0,str,str.GetLength(),NULL,0,NULL,NULL); char *p =new char[len+1]; WideCharToMultiByte(CP_ACP,0,str,str.GetLength(),p,len,NULL,NULL ); p[len] = '\0'; delete []p; (2)用T2A、W2A函式(還可以實現wchar_t* char*轉換) CString p= L"123"; USES_CONVERSION; char* s = T2A(p); wchar_t* q=A2T(s); MessageBoxW(q); //char* w = W2A(p);
2.char*轉CString
同多位元組字符集。