Code::Blocks Forums

User forums => Help => Topic started by: Acki on January 30, 2006, 06:20:09 pm

Title: Program Icon
Post by: Acki on January 30, 2006, 06:20:09 pm

Hi,
I just changed to CB and it seems to be grat !!! :)
Previously I used DevCpp...
In Dev I can define the program icon in the programs settings for GUI apps!
In CB I didn't find this setting... :(

Is there a way to set the program's icon in C::B ???
Or do I have to use a recourse editor/hacker to add the icon after compiling !?!?!

thx, Acki

Title: Re: Program Icon
Post by: sethjackson on January 30, 2006, 06:42:47 pm

Quote from: Acki on January 30, 2006, 06:20:09 pm

Hi,
I just changed to CB and it seems to be grat !!! :)
Previously I used DevCpp...
In Dev I can define the program icon in the programs settings for GUI apps!
In CB I didn't find this setting... :(

Is there a way to set the program's icon in C::B ???
Or do I have to use a recourse editor/hacker to add the icon after compiling !?!?!

thx, Acki

No I don't think there is any setting like that.....

Title: Re: Program Icon
Post by: TDragon on January 30, 2006, 08:33:27 pm

The simplest way for you to add an Explorer and shortcut icon for your program would be in a resource file.

- Create a new file with a .rc extension
- To that file, add a line like "MyIconName ICON myiconfile.ico"
- If you add the file to your project, Code::Blocks should compile correctly for you

This icon will be seen by Explorer as the first icon in your .exe and it will be used whenever the program file or a shortcut to it is displayed. Making the same icon show up in the upper left corner of your program window and in the taskbar is somewhat more complicated.

Hope that helps,
JohnE / TDM

Title: Re: Program Icon
Post by: anarxia on January 31, 2006, 09:12:23 am

The way to set application icon is dependend on the toolkit used (which is obviously what you meant).
Here's a short example for Win32 which should work for most cases:

In your rc file: (2 is arbitrary)

Code

2 ICON "myicon.ico"

And somewhere in your window create function (notice the 2 again):

Code

HICON hICon;

hICon = LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(2));

SetClassLong(hWnd,            // window handle
                  GCL_HICON,     // changes icon
                  (LONG) hIcon); // The new icon

PostMessage (hWnd, WM_SETICON, ICON_BIG, (LPARAM) hIcon);

Title: Re: Program Icon
Post by: Acki on February 01, 2006, 01:00:18 am

Thanks !!! :)
I used TDragon's solution and it works !!!

Title: Re: Program Icon
Post by: eks on April 22, 2006, 04:38:52 pm

Just look into a .rc file generated by Devcpp (when you add an icon), you should see something like this :

Code

A ICON MOVEABLE PURE LOADONCALL DISCARDABLE "MyIcon.ico"

Copy-paste this line into a .rc file of your project (create one if needed) and change the filename.

It works fine with gcc, I did not try with other compilers.

Title: Re: Program Icon
Post by: yckx on August 31, 2006, 11:55:35 pm

Sorry to dig up an old thread, but I was searching for an answer to a similar problem, and this seems like as good a place as any to document what I found, so others may benefit.  I had several ICON definitions in my RC file, and I couldn't figure out how to tell Code::Blocks which one to use as the icon for Windows Explorer.  This was my code:

Code

ID_ICON_KRAT_16 ICON "resource\\krat_16.ico"
ID_ICON_KRAT_32 ICON "resource\\krat_32.ico"
ID_ICON_KRAT_48 ICON "resource\\krat_48.ico"

I tried re-ordering the lines, and sought for some option in Code::Blocks to let me choose which icon would be used.  Turns out I was looking in the wrong place. In my resdefs.hpp file I had this:

Code

#define ID_ICON_KRAT_16     1000
#define ID_ICON_KRAT_32     1001
#define ID_ICON_KRAT_48     1002

Well, I finally tried changing the defines, and learned that the resulting EXE uses the icon with the lowest-numbered ID for its icon in Windows Explorer.  I don't know if this is standard Windows behavior or just how C::B/mingw defaults, but now that I've figured it out, I'm a happy man.  And maybe somebody else can benefit from my extraordinarily inefficient use of time ;)

Title: Re: Program Icon
Post by: troels on September 01, 2006, 08:48:14 am

Quote from: yckx on August 31, 2006, 11:55:35 pm

Code

ID_ICON_KRAT_16 ICON "resource\\krat_16.ico"
ID_ICON_KRAT_32 ICON "resource\\krat_32.ico"
ID_ICON_KRAT_48 ICON "resource\\krat_48.ico"

The idea is to bundle icons of different sizes into just one single 'compound' icon.
Windows will then pick one out of this 'compound' icon, the one that matches the best.