golang walk gui 窗体禁用最小化、最大化、关闭按钮、禁止修改大小、最小化到系统托盘

go get -u -v github.com/akavel/rsrc
rsrc -manifest main.manifest -o rsrc.syso

go build

1.1 main.go

package main

import (
	"log"

	"github.com/lxn/win"

	"github.com/lxn/walk"
	. "github.com/lxn/walk/declarative"
)

type MyWindow struct {
	*walk.MainWindow
	hWnd        win.HWND
	minimizeBox *walk.CheckBox
	maximizeBox *walk.CheckBox
	closeBox    *walk.CheckBox
	sizeBox     *walk.CheckBox
	ni          *walk.NotifyIcon
}

func (mw *MyWindow) SetMinimizeBox() {
	if mw.minimizeBox.Checked() {
		mw.addStyle(win.WS_MINIMIZEBOX)
		return
	}
	mw.removeStyle(^win.WS_MINIMIZEBOX)
}

func (mw *MyWindow) SetMaximizeBox() {
	if mw.maximizeBox.Checked() {
		mw.addStyle(win.WS_MAXIMIZEBOX)
		return
	}
	mw.removeStyle(^win.WS_MAXIMIZEBOX)
}

func (mw *MyWindow) SetSizePersistent() {
	if mw.sizeBox.Checked() {
		mw.addStyle(win.WS_SIZEBOX)
		return
	}
	mw.removeStyle(^win.WS_SIZEBOX)
}

func (mw *MyWindow) addStyle(style int32) {
	currStyle := win.GetWindowLong(mw.hWnd, win.GWL_STYLE)
	win.SetWindowLong(mw.hWnd, win.GWL_STYLE, currStyle|style)
}

func (mw *MyWindow) removeStyle(style int32) {
	currStyle := win.GetWindowLong(mw.hWnd, win.GWL_STYLE)
	win.SetWindowLong(mw.hWnd, win.GWL_STYLE, currStyle&style)
}

func (mw *MyWindow) SetCloseBox() {
	if mw.closeBox.Checked() {
		win.GetSystemMenu(mw.hWnd, true)
		return
	}
	hMenu := win.GetSystemMenu(mw.hWnd, false)
	win.RemoveMenu(hMenu, win.SC_CLOSE, win.MF_BYCOMMAND)
}

func (mw *MyWindow) AddNotifyIcon() {
	var err error
	mw.ni, err = walk.NewNotifyIcon(mw)
	if err != nil {
		log.Fatal(err)
	}

	icon, err := walk.Resources.Image("img/show.ico")
	if err != nil {
		log.Fatal(err)
	}
	mw.SetIcon(icon)
	mw.ni.SetIcon(icon)
	mw.ni.SetVisible(true)

	mw.ni.MouseDown().Attach(func(x, y int, button walk.MouseButton) {
		if button == walk.LeftButton {
			mw.Show()
			win.ShowWindow(mw.Handle(), win.SW_RESTORE)
		}
	})

}

func main() {
	mw := new(MyWindow)
	if err := (MainWindow{
		AssignTo: &mw.MainWindow,
		Title:    "notify icon",
		Size:     Size{550, 380},
		Layout:   VBox{MarginsZero: true},
		OnSizeChanged: func() {
			if win.IsIconic(mw.Handle()) {
				mw.Hide()
				mw.ni.SetVisible(true)
			}
		},
		Children: []Widget{
			CheckBox{
				AssignTo:            &mw.minimizeBox,
				Text:                "显示最小化按钮",
				Checked:             true,
				OnCheckStateChanged: mw.SetMinimizeBox,
			},
			CheckBox{
				AssignTo:            &mw.maximizeBox,
				Text:                "显示最大化按钮",
				Checked:             true,
				OnCheckStateChanged: mw.SetMaximizeBox,
			},
			CheckBox{
				AssignTo:            &mw.closeBox,
				Text:                "显示关闭按钮",
				Checked:             true,
				OnCheckStateChanged: mw.SetCloseBox,
			},
			CheckBox{
				AssignTo:            &mw.sizeBox,
				Text:                "允许修改大小",
				Checked:             true,
				OnCheckStateChanged: mw.SetSizePersistent,
			},
		},
	}.Create()); err != nil {
		log.Fatal(err)
	}
	mw.hWnd = mw.Handle()
	mw.AddNotifyIcon()

	mw.Run()
}

1.2 main.manifest

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
    <assemblyIdentity version="1.0.0.0" processorArchitecture="*" name="SomeFunkyNameHere" type="win32"/>
    <dependency>
        <dependentAssembly>
            <assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" processorArchitecture="*" publicKeyToken="6595b64144ccf1df" language="*"/>
        </dependentAssembly>
    </dependency>
    <application xmlns="urn:schemas-microsoft-com:asm.v3">
        <windowsSettings>
            <dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">PerMonitorV2, PerMonitor</dpiAwareness>
            <dpiAware xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">True</dpiAware>
        </windowsSettings>
    </application>
</assembly>

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