判断输入字符是不是合法整数windows32

判断输入字符是不是合法整数windows32 bool IsInt(TCHAR* str) { int i=atoi(str); TCHAR strtemp[256]; wsprintf(strtemp,"%i",i); if(strcmp(str,strtemp)!=0) { return FALSE; } else { return TRUE; } } TCHAR str1[256]; TCHAR str2[256]; GetDlgItemText(hwnd,IDC_EDIT1,str1,sizeof(str1)); GetDlgItemText(hwnd,IDC_EDIT2,str2,sizeof(str2)); if(IsInt(str1)==FALSE) { MessageBox(hwnd,TEXT("µÚ1?ö??ÊǺÏ??µÄÕûÊý"),TEXT("???í"),MB_OK| MB_ICONERROR); return; } if(IsInt(str2)==FALSE) { MessageBox(hwnd,TEXT("µÚ2?ö??ÊǺÏ??µÄÕûÊý"),TEXT("???í"),MB_OK| MB_ICONERROR); return; } int i1=atoi(str1); int i2=atoi(str2); int i3=i1-i2; TCHAR str3[256]; wsprintf(str3,"%i",i3); SetDlgItemText(hwnd,IDC_EDIT3,str3);