Golang win.SetWindowPos函数代码示例

func (mw *MainWindow) SetFullscreen(fullscreen bool) error {
	if fullscreen == mw.Fullscreen() {
		return nil
	}

	if fullscreen {
		var mi win.MONITORINFO
		mi.CbSize = uint32(unsafe.Sizeof(mi))

		if mw.windowPlacement == nil {
			mw.windowPlacement = new(win.WINDOWPLACEMENT)
		}

		if !win.GetWindowPlacement(mw.hWnd, mw.windowPlacement) {
			return lastError("GetWindowPlacement")
		}
		if !win.GetMonitorInfo(win.MonitorFromWindow(
			mw.hWnd, win.MONITOR_DEFAULTTOPRIMARY), &mi) {

			return newError("GetMonitorInfo")
		}

		if err := mw.ensureStyleBits(win.WS_OVERLAPPEDWINDOW, false); err != nil {
			return err
		}

		if r := mi.RcMonitor; !win.SetWindowPos(
			mw.hWnd, win.HWND_TOP,
			r.Left, r.Top, r.Right-r.Left, r.Bottom-r.Top,
			win.SWP_FRAMECHANGED|win.SWP_NOOWNERZORDER) {

			return lastError("SetWindowPos")
		}
	} else {
		if err := mw.ensureStyleBits(win.WS_OVERLAPPEDWINDOW, true); err != nil {
			return err
		}

		if !win.SetWindowPlacement(mw.hWnd, mw.windowPlacement) {
			return lastError("SetWindowPlacement")
		}

		if !win.SetWindowPos(mw.hWnd, 0, 0, 0, 0, 0, win.SWP_FRAMECHANGED|win.SWP_NOMOVE|
			win.SWP_NOOWNERZORDER|win.SWP_NOSIZE|win.SWP_NOZORDER) {

			return lastError("SetWindowPos")
		}
	}

	return nil
}

// BringToTop moves the *WindowBase to the top of the keyboard focus order.
func (wb *WindowBase) BringToTop() error {
	if !win.SetWindowPos(wb.hWnd, win.HWND_TOP, 0, 0, 0, 0, win.SWP_NOACTIVATE|win.SWP_NOMOVE|win.SWP_NOSIZE) {
		return lastError("SetWindowPos")
	}

	return nil
}

func NewToolTip() (*ToolTip, error) {
	tt := new(ToolTip)

	if err := InitWindow(
		tt,
		nil,
		"tooltips_class32",
		win.WS_POPUP|win.TTS_ALWAYSTIP,
		win.WS_EX_TOPMOST); err != nil {
		return nil, err
	}

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

	win.SetWindowPos(tt.hWnd, win.HWND_TOPMOST, 0, 0, 0, 0, win.SWP_NOMOVE|win.SWP_NOSIZE|win.SWP_NOACTIVATE)

	succeeded = true

	return tt, nil
}

// SetParent sets the parent of the WidgetBase and adds the WidgetBase to the
// Children list of the Container.
func (wb *WidgetBase) SetParent(parent Container) (err error) {
	if parent == wb.parent {
		return nil
	}

	style := uint32(win.GetWindowLong(wb.hWnd, win.GWL_STYLE))
	if style == 0 {
		return lastError("GetWindowLong")
	}

	if parent == nil {
		style &^= win.WS_CHILD
		style |= win.WS_POPUP

		if win.SetParent(wb.hWnd, 0) == 0 {
			return lastError("SetParent")
		}
		win.SetLastError(0)
		if win.SetWindowLong(wb.hWnd, win.GWL_STYLE, int32(style)) == 0 {
			return lastError("SetWindowLong")
		}
	} else {
		style |= win.WS_CHILD
		style &^= win.WS_POPUP

		win.SetLastError(0)
		if win.SetWindowLong(wb.hWnd, win.GWL_STYLE, int32(style)) == 0 {
			return lastError("SetWindowLong")
		}
		if win.SetParent(wb.hWnd, parent.Handle()) == 0 {
			return lastError("SetParent")
		}
	}

	b := wb.Bounds()

	if !win.SetWindowPos(
		wb.hWnd,
		win.HWND_BOTTOM,
		int32(b.X),
		int32(b.Y),
		int32(b.Width),
		int32(b.Height),
		win.SWP_FRAMECHANGED) {

		return lastError("SetWindowPos")
	}

	oldParent := wb.parent

	wb.parent = parent

	var oldChildren, newChildren *WidgetList
	if oldParent != nil {
		oldChildren = oldParent.Children()
	}
	if parent != nil {
		newChildren = parent.Children()
	}

	if newChildren == oldChildren {
		return nil
	}

	widget := wb.window.(Widget)

	if oldChildren != nil {
		oldChildren.Remove(widget)
	}

	if newChildren != nil && !newChildren.containsHandle(wb.hWnd) {
		newChildren.Add(widget)
	}

	return nil
}

func (fb *FormBase) WndProc(hwnd win.HWND, msg uint32, wParam, lParam uintptr) uintptr {
	switch msg {
	case win.WM_ACTIVATE:
		switch win.LOWORD(uint32(wParam)) {
		case win.WA_ACTIVE, win.WA_CLICKACTIVE:
			if fb.prevFocusHWnd != 0 {
				win.SetFocus(fb.prevFocusHWnd)
			}

		case win.WA_INACTIVE:
			fb.prevFocusHWnd = win.GetFocus()
		}
		return 0

	case win.WM_CLOSE:
		fb.closeReason = CloseReasonUnknown
		var canceled bool
		fb.closingPublisher.Publish(&canceled, fb.closeReason)
		if !canceled {
			if fb.owner != nil {
				fb.owner.SetEnabled(true)
				if !win.SetWindowPos(fb.owner.Handle(), win.HWND_NOTOPMOST, 0, 0, 0, 0, win.SWP_NOMOVE|win.SWP_NOSIZE|win.SWP_SHOWWINDOW) {
					lastError("SetWindowPos")
				}
			}

			fb.close()
		}
		return 0

	case win.WM_COMMAND:
		return fb.clientComposite.WndProc(hwnd, msg, wParam, lParam)

	case win.WM_GETMINMAXINFO:
		mmi := (*win.MINMAXINFO)(unsafe.Pointer(lParam))

		layout := fb.clientComposite.Layout()

		var min Size
		if layout != nil {
			min = fb.sizeFromClientSize(layout.MinSize())
		}

		mmi.PtMinTrackSize = win.POINT{
			int32(maxi(min.Width, fb.minSize.Width)),
			int32(maxi(min.Height, fb.minSize.Height)),
		}
		return 0

	case win.WM_NOTIFY:
		return fb.clientComposite.WndProc(hwnd, msg, wParam, lParam)

	case win.WM_SETTEXT:
		fb.titleChangedPublisher.Publish()

	case win.WM_SIZE, win.WM_SIZING:
		fb.clientComposite.SetBounds(fb.window.ClientBounds())

	case win.WM_SYSCOMMAND:
		if wParam == win.SC_CLOSE {
			fb.closeReason = CloseReasonUser
		}

	case taskbarButtonCreatedMsgId:
		version := win.GetVersion()
		major := version & 0xFF
		minor := version & 0xFF00 >> 8
		// Check that the OS is Win 7 or later (Win 7 is v6.1).
		if major > 6 || (major == 6 && minor > 0) {
			fb.progressIndicator, _ = newTaskbarList3(fb.hWnd)
		}
	}

	return fb.WindowBase.WndProc(hwnd, msg, wParam, lParam)
}

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
}