[RESOLVED] char [] or char [large size] question

[eclessiastes]

Hello
I have a very simple question yet can't find answer. I need to store key from user input in a char but don't know how to set correct size without causing buffer errors.

char key[50]

if user enter more than 50 characters then exe will crash. I would like to use like a string

std::string key

where no size initialize is required. Any idea ?

[2kaud]

What's wrong with using std::string? Either stream extraction using >> or getline() can be used to obtain user input to std::string. If you need to access as char* (for passing to a function etc) then use .c_str().

See
http://www.cplusplus.com/reference/s...tring/getline/
http://www.cplusplus.com/reference/string/string/c_str/

[eclessiastes]

I need to format it with wsprintfA also code is running in another space so i'm limited to char. I'm thinking of something like:

				char userinput[256];
				char buffer[] = "";
				wsprintfA(buffer, "input&log=%s", userinput);

I need to format a text that sometime is larger than 256. I don't know how to format a std::string without using char. Is there any way ?

[eclessiastes]

char wnd_title[256];
HWND hwnd = GetForegroundWindow();
GetWindowTextA(hwnd, wnd_title, 256);

Take this simple example. What if window title has more than 256 characters ? App will crash.
My problem is something similar.
Any idea how to make this work ?

[Philip Nicoletti]

You can use GetWindowTextLength() to get the length of the window text (or a larger value).
See the documention.

[eclessiastes]

thanks for help guys! i resolved it.