Example #1
0
func NewComboBox(parent Container) (*ComboBox, error) {
	cb, err := newComboBoxWithStyle(parent, win.CBS_DROPDOWN)
	if err != nil {
		return nil, err
	}

	editHwnd := win.GetWindow(cb.hWnd, win.GW_CHILD)

	win.SetWindowLongPtr(editHwnd, win.GWLP_USERDATA, uintptr(unsafe.Pointer(cb)))
	cb.editOrigWndProcPtr = win.SetWindowLongPtr(editHwnd, win.GWLP_WNDPROC, comboBoxEditWndProcPtr)

	return cb, nil
}
Example #2
0
// NewNotifyIcon creates and returns a new NotifyIcon.
//
// The NotifyIcon is initially not visible.
func NewNotifyIcon() (*NotifyIcon, error) {
	// Create the message-only window for the NotifyIcon.
	hWnd := win.CreateWindowEx(
		0,
		syscall.StringToUTF16Ptr(notifyIconWindowClass),
		nil,
		0,
		0,
		0,
		0,
		0,
		win.HWND_MESSAGE,
		0,
		0,
		nil)
	if hWnd == 0 {
		return nil, lastError("CreateWindowEx")
	}

	// Add our notify icon to the status area and make sure it is hidden.
	nid := win.NOTIFYICONDATA{
		HWnd:             hWnd,
		UFlags:           win.NIF_MESSAGE | win.NIF_STATE,
		DwState:          win.NIS_HIDDEN,
		DwStateMask:      win.NIS_HIDDEN,
		UCallbackMessage: notifyIconMessageId,
	}
	nid.CbSize = uint32(unsafe.Sizeof(nid))

	if !win.Shell_NotifyIcon(win.NIM_ADD, &nid) {
		return nil, newError("Shell_NotifyIcon")
	}

	// We want XP-compatible message behavior.
	nid.UVersion = win.NOTIFYICON_VERSION

	if !win.Shell_NotifyIcon(win.NIM_SETVERSION, &nid) {
		return nil, newError("Shell_NotifyIcon")
	}

	// Create and initialize the NotifyIcon already.
	menu, err := NewMenu()
	if err != nil {
		return nil, err
	}

	ni := &NotifyIcon{
		id:          nid.UID,
		hWnd:        hWnd,
		contextMenu: menu,
	}

	// Set our *NotifyIcon as user data for the message window.
	win.SetWindowLongPtr(hWnd, win.GWLP_USERDATA, uintptr(unsafe.Pointer(ni)))

	return ni, nil
}
Example #3
0
// InitWindow initializes a window.
//
// Widgets should be initialized using InitWidget instead.
func InitWindow(window, parent Window, className string, style, exStyle uint32) error {
	wb := window.AsWindowBase()
	wb.window = window
	wb.enabled = true
	wb.visible = true

	wb.name2Property = make(map[string]Property)

	var hwndParent win.HWND
	if parent != nil {
		hwndParent = parent.Handle()

		if widget, ok := window.(Widget); ok {
			if container, ok := parent.(Container); ok {
				widget.AsWidgetBase().parent = container
			}
		}
	}

	wb.hWnd = win.CreateWindowEx(
		exStyle,
		syscall.StringToUTF16Ptr(className),
		nil,
		style|win.WS_CLIPSIBLINGS,
		win.CW_USEDEFAULT,
		win.CW_USEDEFAULT,
		win.CW_USEDEFAULT,
		win.CW_USEDEFAULT,
		hwndParent,
		0,
		0,
		nil)
	if wb.hWnd == 0 {
		return lastError("CreateWindowEx")
	}

	succeeded := false
	defer func() {
		if !succeeded {
			wb.Dispose()
		}
	}()

	hwnd2WindowBase[wb.hWnd] = wb

	if !registeredWindowClasses[className] {
		// We subclass all windows of system classes.
		wb.origWndProcPtr = win.SetWindowLongPtr(wb.hWnd, win.GWLP_WNDPROC, defaultWndProcPtr)
		if wb.origWndProcPtr == 0 {
			return lastError("SetWindowLongPtr")
		}
	}

	setWindowFont(wb.hWnd, defaultFont)

	if form, ok := window.(Form); ok {
		if fb := form.AsFormBase(); fb != nil {
			if err := fb.init(form); err != nil {
				return err
			}
		}
	}

	if widget, ok := window.(Widget); ok {
		if wb := widget.AsWidgetBase(); wb != nil {
			if err := wb.init(widget); err != nil {
				return err
			}
		}
	}

	wb.enabledProperty = NewBoolProperty(
		func() bool {
			return wb.window.Enabled()
		},
		func(b bool) error {
			wb.window.SetEnabled(b)
			return nil
		},
		wb.enabledChangedPublisher.Event())

	wb.visibleProperty = NewBoolProperty(
		func() bool {
			return window.Visible()
		},
		func(b bool) error {
			wb.window.SetVisible(b)
			return nil
		},
		wb.visibleChangedPublisher.Event())

	wb.MustRegisterProperty("Enabled", wb.enabledProperty)
	wb.MustRegisterProperty("Visible", wb.visibleProperty)

	succeeded = true

	return nil
}