下邊這段程式碼是計算一個字串的字元個數的，注意不是字串長度，自己改吧，很簡單

int StringCountCharsA(CHAR *szTarget)

{

int nCount = 0,nCorsor = 0;

byte btChar;

btChar = *(byte*)szTarget;

while(0x00 != btChar)

{

nCount ++;

if(::IsDBCSLeadByte(btChar))

{

nCorsor += 2;

}else

{

nCorsor += 1;

}

btChar = *(byte*)(szTarget+nCorsor);

}

return nCount;

}