语法错误：'常量'

Question

I am trying to learn some WinAPI programming on C++ trough this tutorial. http://www.winprog.org/tutorial/resources.html

The author first defines a constant in 'resource.h':

#define IDI_MYICON 101

and then he uses it in the .cpp file:

#include "resource.h"
IDI_MYICON ICON "my_icon.ico"

When I try to do that I get following error: error C2059: Syntaxfehler: 'Konstante' which translates into syntax error: 'Constant(the noun)' What am I doing wrong here?

Edit: Ok, as it seems that was a very dumb mistake of me. Well deserved -reputation. Thanks for replying!

Answer 1

and then he uses it in the .cpp file

#include "resource.h" IDI_MYICON ICON "my_icon.ico"

This is the problem. The above code needs to be in a .RC file instead, and that file then needs to be compiled using a resource compiler , not a C++ source code compiler .

This line:

#include "resource.h"

Is valid in a .cpp file. It is useful so the same IDI_MYICON define can be used when both creating the resource and when referring to the resource in source code.

This line:

IDI_MYICON ICON "my_icon.ico"

is NOT valid in a .cpp file, only in a .rc file!

Answer 2

IDI_MYICON ICON "my_icon.ico"

is same as

101 ICON "my_icon.ico"

which has no meaning and it is syntactically wrong.