Why MessageBoxs titles are different for null string?

[alaphate]

Compare these tow messageboxs:

MessageBox(0, 0, 0, 0);

and

MessageBox(0, 0, "", 0);

The captions of them are different.

What's the reason?

[ghandi]

Passing a null string will actually pass the empty buffer, passing NULL as the parameter (0) causes the system to use a stock error title, if i recall correctly it is 'Error', which is inventive and descriptive all in one... Google is still our best friend for information like this...

http://msdn.microsof...5(v=vs.85).aspx

Ghandi

Edited July 26, 2012 by ghandi

[alaphate]

ghandi,

Thank you!

I should have looked up MSDN and read carefully.

0=='\0' true

'\0'=="" false

0=="" false