Golang win.CreateWindowEx函数代码示例

func init() {
	MustRegisterWindowClass(clipboardWindowClass)

	hwnd := win.CreateWindowEx(
		0,
		syscall.StringToUTF16Ptr(clipboardWindowClass),
		nil,
		0,
		0,
		0,
		0,
		0,
		win.HWND_MESSAGE,
		0,
		0,
		nil)

	if hwnd == 0 {
		panic("failed to create clipboard window")
	}

	if !win.AddClipboardFormatListener(hwnd) {
		panic(lastError("AddClipboardFormatListener"))
	}

	clipboard.hwnd = hwnd
}

// 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
}

func NewGroupBox(parent Container) (*GroupBox, error) {
	gb := new(GroupBox)

	if err := InitWidget(
		gb,
		parent,
		groupBoxWindowClass,
		win.WS_VISIBLE,
		win.WS_EX_CONTROLPARENT); err != nil {
		return nil, err
	}

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

	var err error
	gb.composite, err = NewComposite(gb)
	if err != nil {
		return nil, err
	}

	gb.hWndGroupBox = win.CreateWindowEx(
		0, syscall.StringToUTF16Ptr("BUTTON"), nil,
		win.WS_CHILD|win.WS_VISIBLE|win.BS_GROUPBOX,
		0, 0, 80, 24, gb.hWnd, 0, 0, nil)
	if gb.hWndGroupBox == 0 {
		return nil, lastError("CreateWindowEx(BUTTON)")
	}

	// Set font to nil first to outsmart SetFont.
	//	gb.font = nil
	//	gb.SetFont(defaultFont)

	gb.MustRegisterProperty("Title", NewProperty(
		func() interface{} {
			return gb.Title()
		},
		func(v interface{}) error {
			return gb.SetTitle(v.(string))
		},
		gb.titleChangedPublisher.Event()))

	succeeded = true

	return gb, nil
}

func WinMain(Inst win.HINSTANCE) int32 {
	// 1. 注册窗口类
	atom := MyRegisterClass(Inst)
	if atom == 0 {
		fmt.Println("注册窗口类失败:", win.GetLastError())
		return 0
	}
	fmt.Println("注册窗口类成功", atom)

	// 2. 创建窗口
	wnd := win.CreateWindowEx(win.WS_EX_APPWINDOW,
		syscall.StringToUTF16Ptr("主窗口类"),
		nil,
		win.WS_OVERLAPPEDWINDOW|win.WS_CLIPSIBLINGS,
		win.CW_USEDEFAULT,
		win.CW_USEDEFAULT,
		win.CW_USEDEFAULT,
		win.CW_USEDEFAULT,
		0,
		0,
		Inst,
		nil)
	if wnd == 0 {
		fmt.Println("创建窗口失败", win.GetLastError())
		return 0
	}
	fmt.Println("创建窗口成功", wnd)
	win.ShowWindow(wnd, win.SW_SHOW)
	win.UpdateWindow(wnd)
	// load file
	gohl.EnableDebug()
	if err := gohl.LoadFile(wnd, "a.html"); err != nil {
		println("LoadFile failed", err.Error())
		return 0
	}
	ui(wnd)

	// 3. 主消息循环
	var msg win.MSG
	msg.Message = win.WM_QUIT + 1 // 让它不等于 win.WM_QUIT

	for win.GetMessage(&msg, 0, 0, 0) > 0 {
		win.TranslateMessage(&msg)
		win.DispatchMessage(&msg)
	}

	return int32(msg.WParam)
}

func WinMain(Inst win.HINSTANCE) int32 {
	// RegisterClass
	atom := MyRegisterClass(Inst)
	if atom == 0 {
		fmt.Println("RegisterClass failed:", win.GetLastError())
		return 0
	}
	fmt.Println("RegisterClass ok", atom)

	// CreateWindowEx
	wnd := win.CreateWindowEx(win.WS_EX_APPWINDOW,
		syscall.StringToUTF16Ptr(wndClassName),
		nil,
		win.WS_OVERLAPPEDWINDOW|win.WS_CLIPSIBLINGS,
		win.CW_USEDEFAULT,
		win.CW_USEDEFAULT,
		win.CW_USEDEFAULT,
		win.CW_USEDEFAULT,
		0,
		0,
		Inst,
		nil)
	if wnd == 0 {
		fmt.Println("CreateWindowEx failed:", win.GetLastError())
		return 0
	}
	fmt.Println("CreateWindowEx done", wnd)
	win.ShowWindow(wnd, win.SW_SHOW)
	win.UpdateWindow(wnd)
	// load file
	gohl.EnableDebug()
	if err := gohl.LoadFile(wnd, "a.html"); err != nil {
		println("LoadFile failed", err.Error())
		return 0
	}

	// main message loop
	var msg win.MSG

	for win.GetMessage(&msg, 0, 0, 0) > 0 {
		win.TranslateMessage(&msg)
		win.DispatchMessage(&msg)
	}

	return int32(msg.WParam)
}

func NewTabWidget(parent Container) (*TabWidget, error) {
	tw := &TabWidget{currentIndex: -1}
	tw.pages = newTabPageList(tw)

	if err := InitWidget(
		tw,
		parent,
		tabWidgetWindowClass,
		win.WS_VISIBLE,
		win.WS_EX_CONTROLPARENT); err != nil {
		return nil, err
	}

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

	tw.SetPersistent(true)

	tw.hWndTab = win.CreateWindowEx(
		0, syscall.StringToUTF16Ptr("SysTabControl32"), nil,
		win.WS_CHILD|win.WS_CLIPSIBLINGS|win.WS_TABSTOP|win.WS_VISIBLE,
		0, 0, 0, 0, tw.hWnd, 0, 0, nil)
	if tw.hWndTab == 0 {
		return nil, lastError("CreateWindowEx")
	}
	win.SendMessage(tw.hWndTab, win.WM_SETFONT, uintptr(defaultFont.handleForDPI(0)), 1)

	setWindowFont(tw.hWndTab, tw.Font())

	tw.MustRegisterProperty("HasCurrentPage", NewReadOnlyBoolProperty(
		func() bool {
			return tw.CurrentIndex() != -1
		},
		tw.CurrentIndexChanged()))

	succeeded = true

	return tw, nil
}

func init() {
	MustRegisterWindowClass(clipboardWindowClass)

	hwnd := win.CreateWindowEx(
		0,
		syscall.StringToUTF16Ptr(clipboardWindowClass),
		nil,
		0,
		0,
		0,
		0,
		0,
		win.HWND_MESSAGE,
		0,
		0,
		nil)

	if hwnd == 0 {
		panic("failed to create clipboard window")
	}

	clipboard.hwnd = hwnd
}

func NewGroupBox(parent Container) (*GroupBox, error) {
	gb := new(GroupBox)

	if err := InitWidget(
		gb,
		parent,
		groupBoxWindowClass,
		win.WS_VISIBLE,
		win.WS_EX_CONTROLPARENT); err != nil {
		return nil, err
	}

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

	gb.hWndGroupBox = win.CreateWindowEx(
		0, syscall.StringToUTF16Ptr("BUTTON"), nil,
		win.WS_CHILD|win.WS_VISIBLE|win.BS_GROUPBOX,
		0, 0, 80, 24, gb.hWnd, 0, 0, nil)
	if gb.hWndGroupBox == 0 {
		return nil, lastError("CreateWindowEx(BUTTON)")
	}

	setWindowFont(gb.hWndGroupBox, gb.Font())

	var err error

	gb.checkBox, err = NewCheckBox(gb)
	if err != nil {
		return nil, err
	}

	gb.checkBox.SetChecked(true)

	gb.checkBox.CheckedChanged().Attach(func() {
		gb.applyEnabledFromCheckBox(gb.checkBox.Checked())
	})

	setWindowVisible(gb.checkBox.hWnd, false)

	gb.composite, err = NewComposite(gb)
	if err != nil {
		return nil, err
	}

	win.SetWindowPos(gb.checkBox.hWnd, win.HWND_TOP, 0, 0, 0, 0, win.SWP_NOMOVE|win.SWP_NOSIZE)

	gb.MustRegisterProperty("Title", NewProperty(
		func() interface{} {
			return gb.Title()
		},
		func(v interface{}) error {
			return gb.SetTitle(v.(string))
		},
		gb.titleChangedPublisher.Event()))

	gb.MustRegisterProperty("Checked", NewBoolProperty(
		func() bool {
			return gb.Checked()
		},
		func(v bool) error {
			gb.SetChecked(v)
			return nil
		},
		gb.CheckedChanged()))

	succeeded = true

	return gb, nil
}

// 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
//.........这里部分代码省略.........