how to set the icon on the title bar

[rinetd]

i found some code like this ,but i don't known how to use it.
SetClassLong(hwnd,GCL_HICON,(LONG)LoadIcon(hinstance, IDI_ICON ));

[ryujimiya]

Hi, rinetd!

if you use lxn/walk and not directly use lxn/win,
you may load the icon file and put it to window like this;

    icon, iconErr := walk.Resources.Icon("foo.ico")

    err := MainWindow{
        AssignTo: &mainWin,  
        Title:    "MainWindow",
        Icon:     icon,
        (snip)
    }.Create()

if you want to load icon from resources,
first you have to rsrc

rsrc -arch amd64 -manifest foo.exe.manifest -ico foo.ico -o rsrc.syso

and, load it like this:

	icon, iconErr := walk.Resources.Icon("3")

[lxn]

You can do it like this, too:

err := MainWindow{
        AssignTo: &mainWin,  
        Title:    "MainWindow",
        Icon:     "foo.ico",
        (snip)
    }.Create()