Visual Studio MFC Cstring格式

Question

I am developing an MFC Interface with Visual Studio, but the output is not as it should. I am using the same code as the on used in codeblocks but the output here is different and i think it's because of the format. What is the correct way to enter 'e' and 'd' in my 'IDC_Values' ? I searched online but couldn't find much about MFC

int e[100], d[100];

CString Text;
Text.Format((LPCWSTR)L"%d \t%d", e, d);
SetDlgItemText(IDC_Values, Text);

Answer 1

CString is CStringW on UNICODE builds and CStringA on non UNICODE builds. So you should not mix wide literals with non wide, for example you have:

Text.Format((LPCWSTR)L"%d \t%d", e, d);
                     ^ ~~~~ this requires that CString is wide

this should be (minus the fact that e and d are arrays!!):

Text.Format(_T("%d \t%d"), e, d);

Now if you want to format a string, and set it to widget, then you must iterate it (warning: I have not compiled this code):

CString Text;
CString tmp;
for (size_t i = 0; i < sizeof(e)/sizeof(e[0]); ++i) {
  tmp.Format(_T("%d,"), e[i]);
  Text += tmp;
}

// here the same for d

I am not saying its the most efficent way.

Answer 2

If you want to print the content of an array you must iterate the array and build the string I guess you want a list having rows and columns containg e[] and d[]? I assume that e. d are filled completely. If so you need to code like

int e[100], d[100];
CString Text;
CString Line
for(int i=0;i<100;i++){
    Line.Format((LPCWSTR)L"%d \t%d\r\n", e, d);
    Text+=Line;
}
SetDlgItemText(IDC_Values, Text);

This will generate a multiline string containing the values of e and d. If this is what you want.