// Creates a hidden window, required for capturing the mouse interaction with the
// notify icon. Windows will call the WndProc of this window, whenever something happens
// on the notify icon (e.g. mouse click).
func (t *_NotifyIcon) createCallbackWindow() (err error) {
className := "KeyFwdWindowClass"
err = registerWindowClass(className, t.iconCallback)
if err != nil {
return
}
classNamePtr, _ := syscall.UTF16PtrFromString(className)
t.hwnd = w32.CreateWindowEx(
uint(w32.WS_EX_LEFT|w32.WS_EX_LTRREADING|w32.WS_EX_WINDOWEDGE),
classNamePtr,
nil,
uint(w32.WS_OVERLAPPED|w32.WS_MINIMIZEBOX|w32.WS_SYSMENU|w32.WS_CLIPSIBLINGS|w32.WS_CAPTION),
w32.CW_USEDEFAULT,
w32.CW_USEDEFAULT,
10,
10,
w32.HWND_DESKTOP,
w32.HMENU(0),
w32.GetModuleHandle(""),
unsafe.Pointer(uintptr(0)),
)
if t.hwnd == 0 {
return syscall.GetLastError()
}
return nil
}
func main() {
gform.Init()
form := gform.NewForm(nil)
form.Show()
form.OnClose().Bind(func(arg *gform.EventArg) {
w32.DestroyWindow(form.Handle())
})
check(di8.Init())
defer di8.Close()
dinput, err := di8.Create(unsafe.Pointer(w32.GetModuleHandle("")))
defer dinput.Release()
check(err)
dinput.EnumDevices(
di8.DEVCLASS_ALL,
func(device di8.DeviceInstance) bool {
fmt.Printf("%v (%v)\n", device.InstanceName, device.ProductName)
return true
},
di8.EDFL_ALLDEVICES,
)
gform.RunMainLoop()
}
func init() {
gWindows = make(map[w32.HWND]*Window)
gClasses = make([]string, 0)
gGeneralCallback = syscall.NewCallback(WndProc)
gAppInstance = w32.GetModuleHandle("")
if gAppInstance == 0 {
panic("could not get app instance")
}
}
// Register a new window class for the current process. A window with the specified
// class name will use the given WndProc callback function.
func registerWindowClass(className string, callback _WindowProc) error {
classNamePtr, _ := syscall.UTF16PtrFromString(className)
var winClass w32.WNDCLASSEX
winClass.Size = uint32(unsafe.Sizeof(winClass))
winClass.Instance = w32.GetModuleHandle("")
winClass.ClassName = classNamePtr
winClass.WndProc = syscall.NewCallback(callback)
if w32.RegisterClassEx(&winClass) == 0 {
return syscall.GetLastError()
}
return nil
}
func Init() {
gAppInstance = w32.GetModuleHandle("")
if gAppInstance == 0 {
panic("Error occurred in App.Init")
}
// Initialize the common controls
var initCtrls w32.INITCOMMONCONTROLSEX
initCtrls.DwSize = uint32(unsafe.Sizeof(initCtrls))
initCtrls.DwICC =
w32.ICC_LISTVIEW_CLASSES | w32.ICC_PROGRESS_CLASS | w32.ICC_TAB_CLASSES |
w32.ICC_TREEVIEW_CLASSES | w32.ICC_BAR_CLASSES
w32.InitCommonControlsEx(&initCtrls)
}
func (app *DemoApp) Initialize() {
app.CreateDeviceIndependentResources()
hInstance := w32.GetModuleHandle("")
icon := w32.LoadIcon(0, w32.MakeIntResource(w32.IDI_APPLICATION))
wndProc := func(hwnd w32.HWND, msg uint, wParam, lParam uintptr) uintptr {
return app.WndProc(hwnd, msg, wParam, lParam)
}
wndClass := w32.WNDCLASSEX{
Size: uint(unsafe.Sizeof(w32.WNDCLASSEX{})),
Style: w32.CS_HREDRAW | w32.CS_VREDRAW,
WndProc: syscall.NewCallback(wndProc),
ClsExtra: 0,
WndExtra: 0,
Instance: hInstance,
Icon: icon,
Cursor: w32.LoadCursor(0, w32.MakeIntResource(w32.IDC_ARROW)),
Background: 0,
MenuName: nil,
ClassName: syscall.StringToUTF16Ptr("D2DDemoApp"),
IconSm: icon,
}
w32.RegisterClassEx(&wndClass)
dpiX, dpiY := app.factory.GetDesktopDpi(app.factory)
app.hwnd = w32.CreateWindowEx(
0,
syscall.StringToUTF16Ptr("D2DDemoApp"),
syscall.StringToUTF16Ptr("Hello Windows"),
w32.WS_OVERLAPPEDWINDOW,
w32.CW_USEDEFAULT,
w32.CW_USEDEFAULT,
int(math.Ceil(float64(640*dpiX/96))),
int(math.Ceil(float64(640*dpiY/96))),
0,
0,
hInstance,
nil)
w32.ShowWindow(app.hwnd, w32.SW_SHOW)
w32.UpdateWindow(app.hwnd)
}