MessageBox string with variable name value dev c++

Asked Jul 19 '17 at 09:20

Active Jul 19 '17 at 09:20

Viewed 29 times

I im using dev c++ to create open dialog and i need to write in MessageBox error message "Unable to open file C:\test.txt" i try with this code:

MessageBox(hwnd, "Unable to open file "&(LPSTR)szFileName, "Error", MB_OK | MB_ICONERROR);

But it gives me error about char complains...how can i add string with variable value in messagebox?

char szFileName[MAX_PATH]; is defined with this and its value for this example is "test.txt"

How can i display this string+variable value(filename) in msgbox?

asked Jul 19 '17 at 09:20

John

`("Unable to open file ' + std::string(szFileName)).c_str()` is the one liner. Much better to make szFileName be a `std::string` though. – Martin Bonner supports Monica Jul 19 '17 at 09:26
Also, you really ought to be writing Unicode apps these days. In which case you need `(L"Unable to open file ) + std::wstring(szFilename)).c_str())` with `szFileName` being `wchar_t szFileName[MAX_PATH];` – Martin Bonner supports Monica Jul 19 '17 at 09:27
Thanks Martin Bonner i use your solution and it works... – John Jul 19 '17 at 09:44

0 Answers0