WPF实现基础控件之托盘的示例代码
wpF 基础控件之托盘
框架使用大于等于.NET40。
Visual Studio 2022。
项目使用 MIT 开源许可协议。
新建NotifyIcon自定义控件继承自FrameworkElement。
创建托盘程序主要借助与 Win32API:
- 注册窗体对象
RegisterClassEx。 - 注册消息获取对应消息标识
IdRegisterWindowMessage。 - 创建窗体（本质上托盘在创建时需要一个窗口句柄，完全可以将主窗体的句柄给进去，但是为了更好的管理消息以及托盘的生命周期，通常会创建一个独立不可见的窗口）
CreateWindowEx。
以下2点需要注意：
- 托盘控件的
ContextMenu菜单MenuItem在使用binding时无效，是因为DataContext没有带过去，需要重新赋值一次。 - 托盘控件发送
ShowBalloonTip消息通知时候需新建Shell_NotifyIcon。 - Nuget 最新
Install-Package WPFDevelopers1.0.9.1-preview
示例代码
1） NotifyIcon.cs 代码如下：
usingSystem;
usingSystem.IO;
usingSystem.Runtime.InteropServices;
usingSystem.Threading;
usingSystem.Windows;
usingSystem.Windows.Controls;
usingSystem.Windows.Controls.Primitives;
usingSystem.Windows.Data;
usingSystem.Windows.Input;
usingSystem.Windows.Media;
usingSystem.Windows.Media.Imaging;
usingWPFDevelopers.Controls.Runtimes;
usingWPFDevelopers.Controls.Runtimes.Interop;
usingWPFDevelopers.Controls.Runtimes.Shell32;
usingWPFDevelopers.Controls.Runtimes.User32;
namespaceWPFDevelopers.Controls
{
publicclassNotifyIcon:FrameworkElement,IDisposable
{
privatestaticNotifyIconNotifyIconCache;
publicstaticreadonlyDependencyPropertyContextContentProperty=DependencyProperty.Register(
"ContextContent",typeof(object),typeof(NotifyIcon),newPropertyMetadata(default));
publicstaticreadonlyDependencyPropertyIconProperty=
DependencyProperty.Register("Icon",typeof(ImageSource),typeof(NotifyIcon),
newPropertyMetadata(default,OnIconPropertyChanged));
publicstaticreadonlyDependencyPropertyTitleProperty=
DependencyProperty.Register("Title",typeof(string),typeof(NotifyIcon),
newPropertyMetadata(default,OnTitlePropertyChanged));
publicstaticreadonlyRoutedEventClickEvent=
EventManager.RegisterRoutedEvent("Click",RoutingStrategy.Bubble,
typeof(RoutedEventHandler),typeof(NotifyIcon));
publicstaticreadonlyRoutedEventMouseDoubleClickEvent=
EventManager.RegisterRoutedEvent("MouseDoubleClick",RoutingStrategy.Bubble,
typeof(RoutedEventHandler),typeof(NotifyIcon));
privatestaticbools_Loaded=false;
privatestaticNotifyIcons_NotifyIcon;
//这是窗口名称
privatereadonlystring_TrayWndClassName;
//这个是窗口消息名称
privatereadonlystring_TrayWndMessage;
//这个是窗口消息回调（窗口消息都需要在此捕获）
privatereadonlyWndProc_TrayWndProc;
privatePopup_contextContent;
privatebool_doubleClick;
//图标句柄
privateIntPtr_hIcon=IntPtr.Zero;
privateImageSource_icon;
privateIntPtr_iconHandle;
privateint_IsShowIn;
//托盘对象
privateNOTIFYICONDATA_NOTIFYICONDATA;
//这个是传递给托盘的鼠标消息id
privateint_TrayMouseMessage;
//窗口句柄
privateIntPtr_TrayWindowHandle=IntPtr.Zero;
//通过注册窗口消息可以获取唯一标识Id
privateint_WmTrayWindowMessage;
privatebooldisposedValue;
publicNotifyIcon()
{
_TrayWndClassName=$"WPFDevelopers_{Guid.NewGuid()}";
_TrayWndProc=WndProc_CallBack;
_TrayWndMessage="TrayWndMessageName";
_TrayMouseMessage=(int)WM.USER+1024;
Start();
if(Application.Current!=null)
{
//Application.Current.MainWindow.Closed+=(s,e)=>Dispose();
Application.Current.Exit+=(s,e)=>Dispose();
}
NotifyIconCache=this;
}
staticNotifyIcon()
{
DataContextProperty.OverrideMetadata(typeof(NotifyIcon),newFrameworkPropertyMetadata(DataContextPropertyChanged));
ContextMenuProperty.OverrideMetadata(typeof(NotifyIcon编程客栈),newFrameworkPropertyMetadata(ContextMenuPropertyChanged));
}
privatestaticvoidDataContextPropertyChanged(DependencyObjectd,DependencyPropertyChangedEventArgse)=>
((NotifyIcon)d).OnDataContextPropertyChanged(e);
privatevoidOnDataContextPropertyChanged(DependencyPropertyChangedEventArgse)
{
UpdateDataContext(_contextContent,e.OldValue,e.NewValue);
UpdateDataContext(ContextMenu,e.OldValue,e.NewValue);
}
privatevoidUpdateDataContext(FrameworkElementtarget,objectoldValue,objectnewValue)
{
if(target==null||BindingOperations.GetBindingExpression(target,DataContextProperty)!=null)return;
if(ReferenceEquals(this,target.DataContext)||Equals(oldValue,target.DataContext))
{
target.DataContext=newValue??this;
}
}
privatestaticvoidContextMenuPropertyChanged(DependencyObjectd,DependencyPropertyChangedEventArgse)
{
varctl=(NotifyIcon)d;
ctl.OnContextMenuPropertyChanged(e);
}
privatevoidOnContextMenuPropertyChanged(DependencyPropertyChangedEventArgse)=>
UpdateDataContext((ContextMenu)e.NewValue,null,DataContext);
publicobjectContextContent
{
get=>GetValue(ContextContentProperty);
set=>SetValue(ContextContentProperty,value);
}
publicImageSourceIcon
{
get=>(ImageSource)GetValue(IconProperty);
set=>SetValue(IconProperty,value);
}
publicstringTitle
{
get=>(string)GetValue(TitleProperty);
set=>SetValue(TitleProperty,value);
}
publicvoidDispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
privatestaticvoidOnTitlePropertyChanged(DependencyObjectd,DependencyPropertyChangedEventArgse)
{
if(disNotifyIcontrayService)
trayService.ChangeTitle(e.NewValue?.ToString());
}
privatestaticvoidOnIjavascriptconPropertyChanged(DependencyObjectd,DependencyPropertyChangedEventArgse)
{
if(disNotifyIcontrayService)
{
varnotifyIcon=(NotifyIcon)d;
notifyIcon._icon=(ImageSource)e.NewValue;
trayService.ChangeIcon();
}
}
publiceventRoutedEventHandlerClick
{
add=>AddHandler(ClickEvent,value);
remove=>RemoveHandler(ClickEvent,value);
}
publiceventRoutedEventHandlerMouseDoubleClick
{
add=>AddHandler(MouseDoubleClickEvent,value);
remove=>RemoveHandler(MouseDoubleClickEvent,value);
}
privatestaticvoidCurrent_Exit(objectsender,ExitEventArgse)
{
s_NotifyIcon?.Dispose();
s_NotifyIcon=default;
}
publicboolStart()
{
RegisterClass(_TrayWndClassName,_TrayWndProc,_TrayWndMessage);
LoadNotifyIconData(string.Empty);
Show();
returntrue;
}
publicboolStop()
{
//销毁窗体
if(_TrayWindowHandle!=IntPtr.Zero)
if(User32Interop.IsWindow(_TrayWindowHandle))
User32Interop.DestroyWindow(_TrayWindowHandle);
//反注册窗口类
if(!string.IsNullOrWhiteSpace(_TrayWndClassName))
User32Interop.UnregisterClassName(_TrayWndClassName,Kernel32Interop.GetModuleHandle(default));
//销毁Icon
if(_hIcon!=IntPtr.Zero)
User32Interop.DestroyIcon(_hIcon);
Hide();
returntrue;
}
///<summary>
///注册并创建窗口对象
///</summary>
///<paramname="className">窗口名称</param>
///<paramname="messageName">窗口消息名称</param>
///<returns></returns>
privateboolRegisterClass(stringclassName,WndProcwndproccallback,stringmessageName)
{
varwndClass=newWNDCLASSEX
{
cbSize=Marshal.SizeOf(typeof(WNDCLASSEX)),
style=0,
lpfnWndProc=wndproccallback,
cbClsExtra=0,
cbWndExtra=0,
hInstance=IntPtr.Zero,
hCursor=IntPtr.Zero,
hbrBackground=IntPtr.Zero,
lpszMenuName=string.Empty,
lpszClassName=className
};
//注册窗体对象
User32Interop.RegisterClassEx(refwndClass);
//注册消息获取对应消息标识id
_WmTrayWindowMessage=User32Interop.RegisterWindowMessage(messageName);
//创建窗体（本质上托盘在创建时需要一个窗口句柄，完全可以将主窗体的句柄给进去，但是为了更好的管理消息以及托盘的生命周期，通常会创建一个独立不可见的窗口）
_TrayWindowHandle=User32Interop.CreateWindowEx(0,className,"",0,0,0,1,1,IntPtr.Zero,IntPtr.Zero,
IntPtr.Zero,IntPtr.Zero);
returntrue;
}
///<js;summary>
///创建托盘对象
///</summary>
///<paramname="icon">图标路径，可以修改托盘图标（本质上是可以接受用户传入一个图片对象，然后将图片转成Icon，但是算了这个有点复杂）</param>
///<paramname="title">托盘的tooltip</param>
///<returns></returns>
privateboolLoadNotifyIconData(stringtitle)
{
lock(this)
{
_NOTIFYICONDATA=NOTIFYICONDATA.GetDefaultNotifyData(_TrayWindowHandle);
if(_TrayMouseMessage!=0)
_NOTIFYICONDATA.uCallbackMessage=(uint)_TrayMouseMessage;
else
_TrayMouseMessage=(int)_NOTIFYICONDATA.uCallbackMessage;
if(_iconHandle==IntPtr.Zero)
{
varprocessPath=Kernel32Interop.GetModuleFileName(newHandleRef());
if(!string.IsNullOrWhiteSpace(processPath))
{
varindex=IntPtr.Zero;
varhIcon=Shell32Interop.ExtractAssociatedIcon(IntPtr.Zero,processPath,refindex);
_NOTIFYICONDATA.hIcon=hIcon;
_hIcon=hIcon;
}
}
if(!string.IsNullOrWhiteSpace(title))
_NOTIFYICONDATA.szTip=title;
}
returntrue;
}
privateboolShow()
{
varcommand=NotifyCommand.NIM_Add;
if(Thread.VolatileRead(ref_IsShowIn)==1)
command=NotifyCommand.NIM_Modify;
else
Thread.VolatileWrite(ref_IsShowIn,1);
lock(this)
{
returnShell32Interop.Shell_NotifyIcon(command,ref_NOTIFYICONDATA);
}
}
internalstaticintAlignToBytes(doubleoriginal,intnBytesCount)
{
varnBitsCount=8<<(nBytesCount-1);
return((int)Math.Ceiling(original)+(nBitsCount-1))/nBitsCount*nBitsCount;
}
privatestaticbyte[]GenerateMaskArray(intwidth,intheight,byte[]colorArray)
{
varnCount=width*height;
varbytesPerScanLine=AlignToBytes(width,2)/8;
varbitsMask=newbyte[bytesPerScanLine*height];
for(vari=0;i<nCount;i++)
{
varhPos=i%width;
varvPos=i/width;
varbyteIndex=hPos/8;
varoffsetBit=(byte)(0x80>>(hPos%8));
if(colorArray[i*4+3]==0x00)
bitsMask[byteIndex+bytesPerScanLine*vPos]|=offsetBit;
else
bitsMask[byteIndex+bytesPerScanLine*vPos]&=(byte)~offsetBit;
if(hPos==width-1&&width==8)bitsMask[1+bytesPerScanLine*vPos]=0xff;
}
returnbitsMask;
}
privatebyte[]BitmapImageToByteArray(BitmapImagebmp)
{
byte[]bytearray=null;
try
{
varsmarket=bmp.StreamSource;
if(smarket!=null&&smarket.Length>0)
{
//设置当前位置
smarket.Position=0;
using(varbr=newBinaryReader(smarket))
{
bytearray=br.ReadBytes((int)smarket.Length);
}
}
}
catch(Exceptionex)
{
}
returnbytearray;
}
privatebyte[]ConvertBitmapSourceToBitmapImage(
BitmapSourcebitmapSource)
{
byte[]imgByte=default;
if(!(bitmapSourceisBitmapImagebitmapImage))
{
bitmapImage=newBitmapImage();
varencoder=newBmpBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(bitmapSource));
using(varmemoryStream=newMemoryStream())
{
encoder.Save(memoryStream);
memoryStream.Position=0;
bitmapImage.BeginInit();
bitmapImage.CacheOption=BitmapCach编程客栈eOption.OnLoad;
bitmapImage.StreamSource=memoryStream;
bitmapImage.EndInit();
imgByte=BitmapImageToByteArray(bitmapImage);
}
}
returnimgByte;
}
internalstaticIconHandleCreateIconCursor(byte[]xor,intwidth,intheight,intxHotspot,
intyHotspot,boolisIcon)
{
varbits=IntPtr.Zero;
BitmapHandlecolorBitmap=null;
varbi=newBITMAPINFO(width,-height,32)
{
bmiHeader_biCompression=0
};
colorBitmap=Gdi32Interop.CreateDIBSection(newHandleRef(null,IntPtr.Zero),refbi,0,refbits,null,0);
if(colorBitmap.IsInvalid||bits==IntPtr.Zero)returnIconHandle.GetInvalidIcon();
Marshal.Copy(xor,0,bits,xor.Length);
varmaskArray=GenerateMaskArray(width,height,xor);
varmaskBitmap=Gdi32Interop.CreateBitmap(width,height,1,1,maskArray);
if(maskBitmap.IsInvalid)returnIconHandle.GetInvalidIcon();
variconInfo=newGdi32Interop.ICONINFO
{
fIcon=isIcon,
xHotspot=xHotspot,
yHotspot=yHotspot,
hbmMask=maskBitmap,
hbmColor=colorBitmap
};
returnUser32Interop.CreateIconIndirect(iconInfo);
}
privateboolChangeIcon()
{
varbitmapFrame=_iconasBitmapFrame;
if(bitmapFrame!=null&&bitmapFrame.Decoder!=null)
if(bitmapFrame.DecoderisIconBitmapDecoder)
{
//variconBitmapDecoder=newRect(0,0,_icon.Width,_icon.Height);
//vardv=newDrawingVisual();
//vardc=dv.RenderOpen();
//dc.DrawImage(_icon,iconBitmapDecoder);
//dc.Close();
//varbmp=newRenderTargetBitmap((int)_icon.Width,(int)_icon.Height,96,96,
//PixelFormats.Pbgra32);
//bmp.Render(dv);
//BitmapSourcebitmapSource=bmp;
//if(bitmapSource.Format!=PixelFormats.Bgra32&&bitmapSource.Format!=PixelFormats.Pbgra32)
//bitmapSource=newFormatConvertedBitmap(bitmapSource,PixelFormats.Bgra32,null,0.0);
varw=bitmapFrame.PixelWidth;
varh=bitmapFrame.PixelHeight;
varbpp=bitmapFrame.Format.BitsPerPixel;
varstride=(bpp*w+31)/32*4;
varsizeCopyPixels=stride*h;
varxor=newbyte[sizeCopyPixels];
bitmapFrame.CopyPixels(xor,stride,0);
variconHandle=CreateIconCursor(xor,w,h,0,0,true);
_iconHandle=iconHandle.CriticalGetHandle();
}
if(Thread.VolatileRead(ref_IsShowIn)!=1)
returnfalse;
if(_hIcon!=IntPtr.Zero)
{
User32Interop.DestroyIcon(_hIcon);
_hIcon=IntPtr.Zero;
}
lock(this)
{
if(_iconHandle!=IntPtr.Zero)
{
varhIcon=_iconHandle;
_NOTIFYICONDATA.hIcon=hIcon;
_hIcon=hIcon;
}
else
{
_NOTIFYICONDATA.hIcon=IntPtr.Zero;
}
returnShell32Interop.Shell_NotifyIcon(NotifyCommand.NIM_Modify,ref_NOTIFYICONDATA);
}
}
privateboolChangeTitle(stringtitle)
{
if(Thread.VolatileRead(ref_IsShowIn)!=1)
returnfalse;
lock(this)
{
_NOTIFYICONDATA.szTip=title;
returnShell32Interop.Shell_NotifyIcon(NotifyCommand.NIM_Modify,ref_NOTIFYICONDATA);
}
}
publicstaticvoidShowBalloonTip(stringtitle,stringcontent,NotifyIconInfoTypeinfoType)
{
if(NotifyIconCache!=null)
NotifyIconCache.ShowBalloonTips(title,content,infoType);
}
publicvoidShowBalloonTips(stringtitle,stringcontent,NotifyIconInfoTypeinfoType)
{
if(Thread.VolatileRead(ref_IsShowIn)!=1)
return;
var_ShowNOTIFYICONDATA=NOTIFYICONDATA.GetDefaultNotifyData(_TrayWindowHandle);
_ShowNOTIFYICONDATA.uFlags=NIFFlags.NIF_INFO;
_ShowNOTIFYICONDATA.szInfoTitle=title??string.Empty;
_ShowNOTIFYICONDATA.szInfo=content??string.Empty;
switch(infoType)
{
caseNotifyIconInfoType.Info:
_ShowNOTIFYICONDATA.dwInfoFlags=NIIFFlags.NIIF_INFO;
break;
caseNotifyIconInfoType.Warning:
_ShowNOTIFYICONDATA.dwInfoFlags=NIIFFlags.NIIF_WARNING;
break;
caseNotifyIconInfoType.Error:
_ShowNOTIFYICONDATA.dwInfoFlags=NIIFFlags.NIIF_ERROR;
break;
caseNotifyIconInfoType.None:
_ShowNOTIFYICONDATA.dwInfoFlags=NIIFFlags.NIIF_NONE;
break;
}
Shell32Interop.Shell_NotifyIcon(NotifyCommand.NIM_Modify,ref_ShowNOTIFYICONDATA);
}
privateboolHide()
{
varisShow=Thread.VolatileRead(ref_IsShowIn);
if(isShow!=1)
returntrue;
Thread.VolatileWrite(ref_IsShowIn,0);
lock(this)
{
returnShell32Interop.Shell_NotifyIcon(NotifyCommand.NIM_Delete,ref_NOTIFYICONDATA);
}
}
privateIntPtrWndProc_CallBack(IntPt开发者_开发学习rhwnd,WMmsg,IntPtrwParam,IntPtrlParam)
{
//这是窗口相关的消息
if((int)msg==_WmTrayWindowMessage)
{
}
elseif((int)msg==_TrayMouseMessage)//这是托盘上鼠标相关的消息
{
switch((WM)(long)lParam)
{
caseWM.LBUTTONDOWN:
break;
caseWM.LBUTTONUP:
WMMouseUp(MouseButton.Left);
break;
caseWM.LBUTTONDBLCLK:
WMMouseDown(MouseButton.Left,2);
break;
caseWM.RBUTTONDOWN:
break;
caseWM.RBUTTONUP:
OpenMenu();
break;
caseWM.MOUSEMOVE:
break;
caseWM.MOUSEWHEEL:
break;
}
}
elseif(msg==WM.COMMAND)
{
}
returnUser32Interop.DefWindowProc(hwnd,msg,wParam,lParam);
}
privatevoidWMMouseUp(MouseButtonbutton)
{
if(!_doubleClick&&button==MouseButton.Left)
RaiseEvent(newMouseButtonEventArgs(
Mouse.PrimaryDevice,
Environment.TickCount,button)
{
RoutedEvent=ClickEvent
});
_doubleClick=false;
}
privatevoidWMMouseDown(MouseButtonbutton,intclicks)
{
if(clicks==2)
{
RaiseEvent(newMouseButtonEventArgs(
Mouse.PrimaryDevice,
Environment.TickCount,button)
{
RoutedEvent=MouseDoubleClickEvent
});
_doubleClick=true;
}
}
privatevoidOpenMenu()
{
if(ContextContent!=null)
{
_contextContent=newPopup
{
Placement=PlacementMode.Mouse,
AllowsTransparency=true,
StaysOpen=false,
UseLayoutRounding=true,
SnapsToDevicePixels=true
};
_contextContent.Child=newContentControl
{
Content=ContextContent
};
UpdateDataContext(_contextContent,null,DataContext);
_contextContent.IsOpen=true;
User32Interop.SetForegroundWindow(_contextContent.Child.GetHandle());
}
elseif(ContextMenu!=null)
{
if(ContextMenu.Items.Count==0)return;
ContextMenu.InvalidateProperty(StyleProperty);
foreach(variteminContextMenu.Items)
if(itemisMenuItemmenuItem)
{
menuItem.InvalidateProperty(StyleProperty);
}
else
{
varcontainer=ContextMenu.ItemContainerGenerator.ContainerFromItem(item)asMenuItem;
container?.InvalidateProperty(StyleProperty);
}
ContextMenu.Placement=PlacementMode.Mouse;
ContextMenu.IsOpen=true;
User32Interop.SetForegroundWindow(ContextMenu.GetHandle());
}
}
protectedvirtualvoidDispose(booldisposing)
{
if(!disposedValue)
{
if(disposing)
Stop();
disposedValue=true;
}
}
}
publicenumNotifyIconInfoType
{
///<summary>
///NoIcon.
///</summary>
None,
///<summary>
///AInformationIcon.
///</summar编程y>
Info,
///<summary>
///AWarningIcon.
///</summary>
Warning,
///<summary>
///AErrorIcon.
///</summary>
Error
}
}
2） NotifyIconExample.xaml 代码如下：
ContextMenu 使用如下:
<wpfdev:NotifyIconTitle="WPF开发者"> <wpfdev:NotifyIcon.ContextMenu> <ContextMenu> <MenuItemHeader="托盘消息"Click="SendMessage_Click"/> <MenuItemHeader="退出"Click="Quit_Click"/> </ContextMenu> </wpfdev:NotifyIcon.ContextMenu> </wpfdev:NotifyIcon>
ContextContent 使用如下:
<wpfdev:NotifyIconTitle="WPF开发者">
<wpfdev:NotifyIcon.ContextContent>
<BorderCornerRadius="3"Margin="10"
Background="{DynamicResourceBackgroundSolidColorBrush}"
Effect="{StaticResourceNormalShadowDepth}">
<StackPanelVerticalAlignment="Center"Margin="16">
<RectangleWidth="100"Height="100">
<Rectangle.Fill>
<ImageBrushImageSource="pack://application:,,,/Logo.ico"/>
</Rectangle.Fill>
</Rectangle>
<StackPanelMargin="0,16,0,0"HorizontalAlignment="Center"Orientation="Horizontal">
<ButtonMinWidth="100"Content="关于"
Style="{DynamicResourcePrimaryButton}"
Command="{BindinggithubCommand}"/>
<ButtonMargin="16,0,0,0"MinWidth="100"Content="退出"Click="Quit_Click"/>
</StackPanel>
</StackPanel>
</Border>
</wpfdev:NotifyIcon.ContextContent>
</wpfdev:NotifyIcon>
3） NotifyIconExample.cs 代码如下：
ContextMenu 使用如下:
privatevoidQuit_Click(objectsender,RoutedEventArgse)
{
Application.Current.Shutdown();
}
privatevoidSendMessage_Click(objectsender,RoutedEventArgse)
{
NotifyIcon.ShowBalloonTip("Message","WelcometoWPFDevelopers.Minimal",NotifyIconInfoType.None);
}
ContextContent 使用如下:
privatevoidQuit_Click(objectsender,RoutedEventArgse)
{
Application.Current.Shutdown();
}
privatevoidSendMessage_Click(objectsender,RoutedEventArgse)
{
NotifyIcon.ShowBalloonTip("Message","WelcometoWPFDevelopers.Minimal",NotifyIconInfoType.None);
}
实现效果
以上就是WPF实现基础控件之托盘的示例代码的详细内容，更多关于WPF托盘的资料请关注我们其它相关文章！
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