Thread: Displaying a double using DrawString()

Hi everyone,

I'm working on a program in which I want to display a reading (in the form of a double) in a window using GDI+. I am able to use the DrawString method to display a given WCHAR, but I can't work out how to display a double. I know I will probably have to convert it to a WCHAR, but again, I'm lost.

Can anyone help me out on this at all? Failing that, is there another GDI+ function I can use to display doubles on the screen?

Thanks.

DrawString requires (for some stupid reason) that you convert to a WCHAR before you can display the output. I can't find anything on how to convert a double to a WCHAR...

I haven't dabbled much in wide characters, but have you looked into perhaps using "swprintf()" to print the value to a wide-character string?

Thanks for the reply - that seems to be the right way to go, but now I can't figure out how to use swprintf()! If anyone who knows about this kind of thing could give me or direct me to an example bit of code on how to convert a double to a wchar_t, then it would be a big help

After a lot more trying, I came up with this method that works:

Code:

double d = 1.23
std::wstringstream a;
a << d;
std::wstring result = a.str();
graphics.DrawString(result.c_str(), -1, &font, PointF(x,y), &brush);