func registerClasses() error {
var wc w32.WNDCLASSEX
wc = w32.WNDCLASSEX{
/* Size */ uint32(unsafe.Sizeof(wc)),
/* Style */ w32.CS_HREDRAW | w32.CS_VREDRAW,
/* WndProc */ syscall.NewCallback(wndProc),
/* ClsExtra */ 0,
/* WndExtra */ 0,
/* Instance */ appHandle,
/* Icon */ 0,
/* Cursor */ w32.LoadCursor(0, w32.MakeIntResource(w32.IDC_ARROW)),
/* Background*/ w32.HBRUSH(w32.COLOR_WINDOW),
/* MenuName */ nil,
/* ClassName */ wndClassName,
/* IconSm */ 0,
}
if res := w32.RegisterClassEx(&wc); res == 0 {
return errors.New("Failed to register window class!")
}
return nil
}
func LoadIcon(id uint16) Icon {
return Icon(w32.LoadIcon(appHandle, w32.MakeIntResource(id)))
}