blocks|key|1733129|text|这样做看起来像是一种技巧，但它似乎起作用了：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1733130|this.TopMost+=+true;++//+as+a+result+the+form+gets+thrown+to+the+front
this.TopMost+=+false;+//+but+we+don't+actually+want+our+form+to+always+be+on+top|code-block|syntax|javascript|1733131|编辑:注意，这只会提升一个已经创建的表单，而不会偷走焦点。|1733132|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Doing this seems like a hack, but it seems to work:

<pre><code>this.TopMost = true; // as a result the form gets thrown to the front
this.TopMost = false; // but we don't actually want our form to always be on top
</code></pre>

Edit: Note, this merely raises an already created form without stealing focus.

blocks|key|1518208|text|如果您愿意使用Win32+P/Invoke，那么可以使用ShowWindow方法(第一个代码样例完全符合您的要求)。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1518209|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/Windows_API|1|http://en.wikipedia.org/wiki/Platform_Invocation_Services|2|http://www.pinvoke.net/default.aspx/user32/ShowWindow.html^0|7|5|0|D|8|1|S|A|2|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]|$A|T|B|U|1|V]|$A|W|B|X|1|Y]]|C|$]]|$1|D|3|-4|5|6|7|Z|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]|N|$5|G|H|I|C|$J|O]]]]

If you're willing to use <a href="http://en.wikipedia.org/wiki/Windows_API" rel="nofollow noreferrer">Win32</a> <a href="http://en.wikipedia.org/wiki/Platform_Invocation_Services" rel="nofollow noreferrer">P/Invoke</a>, then you can use the <a href="http://www.pinvoke.net/default.aspx/user32/ShowWindow.html" rel="nofollow noreferrer">ShowWindow</a> method (the first code sample does exactly what you want).

blocks|key|1518281|text|使用创建新表单时|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1518282|Form+f+=+new+Form();
f.ShowDialog();|code-block|syntax|javascript|1518283|它偷走了焦点，因为在关闭此窗体之前，您的代码不能继续在主窗体上执行。|1518284|例外情况是使用线程创建一个新表单，然后使用Form.Show()。但是要确保线程是全局可见的，因为如果在函数中声明它，那么一旦函数退出，线程就会结束，表单就会消失。|1518285|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

When you create a new form using 

<pre><code>Form f = new Form();
f.ShowDialog();
</code></pre>

it steals focus because your code can't continue executing on the main form until this form is closed.

The exception is by using threading to create a new form then Form.Show(). Make sure the thread is globally visible though, because if you declare it within a function, as soon as your function exits, your thread will end and the form will disappear.

blocks|key|1733304|text|您可能需要考虑要显示哪种类型的通知。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1733305|如果让用户知道某些事件是绝对重要的，那么使用Messagebox.Show将是推荐的方式，因为它的本质是阻止任何其他事件进入主窗口，直到用户确认它。不过，要注意弹出窗口的盲目性。|1733306|如果不是很重要，您可能希望使用另一种方式来显示通知，例如窗口底部的工具栏。您写道，您将在屏幕的右下角显示通知--标准的方法是使用带有system+tray图标的balloon+tip。|offset|length|1733307|entityMap|0|LINK|mutability|MUTABLE|url|http://blogs.msdn.com/b/oldnewthing/archive/2003/09/10/54831.aspx|1|http://www.geekzilla.co.uk/viewBF3C2DB6-7924-4DD1-B4DE-D024AE31C6C2.htm^0|0|0|1U|B|0|28|B|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$F|U|G|V|1|W]|$F|X|G|Y|1|Z]]|A|$]]|$1|H|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]|P|$5|K|L|M|A|$N|Q]]]]

You might want to consider what kind of notification you would like to display.

If it's absolutely critical to let the user know about some event, using Messagebox.Show would be the recommended way, due to its nature to block any other events to the main window, until the user confirms it. Be aware of pop-up blindness, though.

If it's less than critical, you might want to use an alternative way to display notifications, such as a toolbar on the bottom of the window. You wrote, that you display notifications on the bottom-right of the screen - the standard way to do this would be using a <a href="http://www.geekzilla.co.uk/viewBF3C2DB6-7924-4DD1-B4DE-D024AE31C6C2.htm" rel="nofollow noreferrer">balloon tip</a> with the combination of a <a href="http://blogs.msdn.com/b/oldnewthing/archive/2003/09/10/54831.aspx" rel="nofollow noreferrer">system tray</a> icon.

blocks|key|1518356|text|在单独的线程中创建并启动通知窗体，并在窗体打开后将焦点重置回主窗体。让通知表单提供一个从Form.Shown事件激发的OnFormOpened事件。如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1518357|private+void+StartNotfication()
{
++Thread+th+=+new+Thread(new+ThreadStart(delegate
++{
++++NotificationForm+frm+=+new+NotificationForm();
++++frm.OnFormOpen+%2B=+NotificationOpened;
++++frm.ShowDialog();
++}));
++th.Name+=+"NotificationForm";
++th.Start();
}+

private+void+NotificationOpened()
{
+++this.Focus();+//+Put+focus+back+on+the+original+calling+Form
}|code-block|syntax|javascript|1518358|您还可以保留NotifcationForm对象的句柄，以便通过主窗体(frm.Close())以编程方式关闭它。|1518359|有些细节丢失了，但希望这能让你朝着正确的方向前进。|1518360|entityMap^0|18|A|0|0|Z|B|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|X|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

Create and start the notification Form in a separate thread and reset the focus back to your main form after the Form opens. Have the notification Form provide an OnFormOpened event that is fired from the <code>Form.Shown</code> event. Something like this:

<pre><code>private void StartNotfication()
{
 Thread th = new Thread(new ThreadStart(delegate
 {
 NotificationForm frm = new NotificationForm();
 frm.OnFormOpen += NotificationOpened;
 frm.ShowDialog();
 }));
 th.Name = "NotificationForm";
 th.Start();
} 

private void NotificationOpened()
{
 this.Focus(); // Put focus back on the original calling Form
}
</code></pre>

You can also keep a handle to your NotifcationForm object around so that it can be programmatically closed by the main Form (<code>frm.Close()</code>).

Some details are missing, but hopefully this will get you going in the right direction.

blocks|key|1518402|text|从PInvoke.net的ShowWindow方法中窃取：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1518403|private+const+int+SW_SHOWNOACTIVATE+=+4;
private+const+int+HWND_TOPMOST+=+-1;
private+const+uint+SWP_NOACTIVATE+=+0x0010;

[DllImport("user32.dll",+EntryPoint+=+"SetWindowPos")]
static+extern+bool+SetWindowPos(
+++++int+hWnd,+++++++++++++//+Window+handle
+++++int+hWndInsertAfter,++//+Placement-order+handle
+++++int+X,++++++++++++++++//+Horizontal+position
+++++int+Y,++++++++++++++++//+Vertical+position
+++++int+cx,+++++++++++++++//+Width
+++++int+cy,+++++++++++++++//+Height
+++++uint+uFlags);+++++++++//+Window+positioning+flags

[DllImport("user32.dll")]
static+extern+bool+ShowWindow(IntPtr+hWnd,+int+nCmdShow);

static+void+ShowInactiveTopmost(Form+frm)
{
+++++ShowWindow(frm.Handle,+SW_SHOWNOACTIVATE);
+++++SetWindowPos(frm.Handle.ToInt32(),+HWND_TOPMOST,
+++++frm.Left,+frm.Top,+frm.Width,+frm.Height,
+++++SWP_NOACTIVATE);
}|code-block|syntax|javascript|1518404|(Alex+Lyman回答说，我只是通过直接粘贴代码来扩展它。有编辑权限的人可以将它复制到那里并删除它，这与我无关;)+)|1518405|entityMap|0|LINK|mutability|MUTABLE|url|http://www.pinvoke.net/|1|http://www.pinvoke.net/default.aspx/user32/ShowWindow.html^0|1|B|0|D|A|1|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]|$A|Y|B|Z|1|10]]|C|$]]|$1|D|3|E|5|F|7|11|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|12|8|@]|9|@]|C|$]]|$1|K|3|-4|5|6|7|13|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]|S|$5|N|O|P|C|$Q|T]]]]

Stolen from <a href="http://www.pinvoke.net/" rel="noreferrer">PInvoke.net</a>'s <a href="http://www.pinvoke.net/default.aspx/user32/ShowWindow.html" rel="noreferrer">ShowWindow</a> method:

<pre><code>private const int SW_SHOWNOACTIVATE = 4;
private const int HWND_TOPMOST = -1;
private const uint SWP_NOACTIVATE = 0x0010;

[DllImport("user32.dll", EntryPoint = "SetWindowPos")]
static extern bool SetWindowPos(
 int hWnd, // Window handle
 int hWndInsertAfter, // Placement-order handle
 int X, // Horizontal position
 int Y, // Vertical position
 int cx, // Width
 int cy, // Height
 uint uFlags); // Window positioning flags

[DllImport("user32.dll")]
static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

static void ShowInactiveTopmost(Form frm)
{
 ShowWindow(frm.Handle, SW_SHOWNOACTIVATE);
 SetWindowPos(frm.Handle.ToInt32(), HWND_TOPMOST,
 frm.Left, frm.Top, frm.Width, frm.Height,
 SWP_NOACTIVATE);
}
</code></pre>

(Alex Lyman answered this, I'm just expanding it by directly pasting the code. Someone with edit rights can copy it over there and delete this for all I care ;) )

blocks|key|1733418|text|Alex+Lyman/TheSoftwareJedi的答案中来自pinvoke.net的示例代码将使窗口成为“最上面”的窗口，这意味着在弹出窗口后，您不能将其放在普通窗口之后。根据Matias对其用途的描述，这可能就是他想要的。但是，如果希望用户在弹出窗口后能够将窗口放在其他窗口后面，只需在示例中使用HWND_TOP+(0)而不是HWND_TOPMOST+(-1)即可。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1733419|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

The sample code from pinvoke.net in Alex Lyman/TheSoftwareJedi's answers will make the window a "topmost" window, meaning that you can't put it behind normal windows after it's popped up. Given Matias's description of what he wants to use this for, that could be what he wants. But if you want the user to be able to put your window behind other windows after you've popped it up, just use HWND_TOP (0) instead of HWND_TOPMOST (-1) in the sample.

blocks|key|1733447|text|嗯，仅仅覆盖Form.ShowWithoutActivation还不够吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1733448|protected+override+bool+ShowWithoutActivation
{
++get+{+return+true;+}
}|code-block|syntax|javascript|1733449|如果您也不希望用户单击此通知窗口，则可以覆盖CreateParams：|1733450|protected+override+CreateParams+CreateParams
{
++get
++{
++++CreateParams+baseParams+=+base.CreateParams;

++++const+int+WS_EX_NOACTIVATE+=+0x08000000;
++++const+int+WS_EX_TOOLWINDOW+=+0x00000080;
++++baseParams.ExStyle+%7C=+(+int+)(+WS_EX_NOACTIVATE+%7C+WS_EX_TOOLWINDOW+);

++++return+baseParams;
++}
}|1733451|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Hmmm, isn't simply overriding Form.ShowWithoutActivation enough?

<pre><code>protected override bool ShowWithoutActivation
{
 get { return true; }
}
</code></pre>

And if you don't want the user to click this notification window either, you can override CreateParams:

<pre><code>protected override CreateParams CreateParams
{
 get
 {
 CreateParams baseParams = base.CreateParams;

 const int WS_EX_NOACTIVATE = 0x08000000;
 const int WS_EX_TOOLWINDOW = 0x00000080;
 baseParams.ExStyle |= ( int )( WS_EX_NOACTIVATE | WS_EX_TOOLWINDOW );

 return baseParams;
 }
}
</code></pre>

blocks|key|1733462|text|这样做效果很好。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1733463|请参阅：OpenIcon+-+MSDN和SetForegroundWindow+-+MSDN|offset|length|1733464|using+System.Runtime.InteropServices;

[DllImport("user32.dll")]
static+extern+bool+OpenIcon(IntPtr+hWnd);

[DllImport("user32.dll")]
static+extern+bool+SetForegroundWindow(IntPtr+hWnd);

public+static+void+ActivateInstance()
{
++++IntPtr+hWnd+=+IntPtr+hWnd+=+Process.GetCurrentProcess().MainWindowHandle;

++++//+Restore+the+program.
++++bool+result+=+OpenIcon(hWnd);+
++++//+Activate+the+application.
++++result+=+SetForegroundWindow(hWnd);

++++//+End+the+current+instance+of+the+application.
++++//System.Environment.Exit(0);++++
}|code-block|syntax|javascript|1733465|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.microsoft.com/en-us/windows/desktop/api/winuser/nf-winuser-openicon|1|https://docs.microsoft.com/en-us/windows/desktop/api/winuser/nf-winuser-setforegroundwindow^0|0|4|F|0|K|Q|1|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@$D|W|E|X|1|Y]|$D|Z|E|10|1|11]]|A|$]]|$1|F|3|G|5|H|7|12|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]|S|$5|N|O|P|A|$Q|T]]]]

This works well. 

See: <a href="https://docs.microsoft.com/en-us/windows/desktop/api/winuser/nf-winuser-openicon" rel="nofollow noreferrer">OpenIcon - MSDN</a> and <a href="https://docs.microsoft.com/en-us/windows/desktop/api/winuser/nf-winuser-setforegroundwindow" rel="nofollow noreferrer">SetForegroundWindow - MSDN</a> 

<pre><code>using System.Runtime.InteropServices;

[DllImport("user32.dll")]
static extern bool OpenIcon(IntPtr hWnd);

[DllImport("user32.dll")]
static extern bool SetForegroundWindow(IntPtr hWnd);

public static void ActivateInstance()
{
 IntPtr hWnd = IntPtr hWnd = Process.GetCurrentProcess().MainWindowHandle;

 // Restore the program.
 bool result = OpenIcon(hWnd); 
 // Activate the application.
 result = SetForegroundWindow(hWnd);

 // End the current instance of the application.
 //System.Environment.Exit(0); 
}
</code></pre>

blocks|key|1518509|text|我知道这可能听起来很愚蠢，但这很管用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1518510|this.TopMost+=+true;
this.TopMost+=+false;
this.TopMost+=+true;
this.SendToBack();|code-block|syntax|javascript|1518511|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I know it may sound stupid, but this worked:

<pre><code>this.TopMost = true;
this.TopMost = false;
this.TopMost = true;
this.SendToBack();
</code></pre>

blocks|key|1733553|text|我有类似的东西，我只需显示通知表单，然后执行|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1733554|this.Focus();|code-block|syntax|javascript|1733555|将焦点带回到主窗体上。|1733556|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I have something similar, and I simply show the notification form and then do

<pre><code>this.Focus();
</code></pre>

to bring the focus back on the main form.

blocks|key|1518629|text|在WPF中，你可以这样解决这个问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1518630|在窗口中放置以下属性：|1518631|<Window
++++x:Class="myApplication.winNotification"
++++xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
++++xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
++Title="Notification+Popup"+Width="300"+SizeToContent="Height"
++WindowStyle="None"+AllowsTransparency="True"+Background="Transparent"+ShowInTaskbar="False"+Topmost="True"+Focusable="False"+ShowActivated="False"+>
</Window>|code-block|syntax|javascript|1518632|最后一个属性是您需要ShowActivated="False“的属性。|1518633|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

In WPF you can solve it like this:

In the window put these attributes: 

<pre><code>&lt;Window
 x:Class="myApplication.winNotification"
 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 Title="Notification Popup" Width="300" SizeToContent="Height"
 WindowStyle="None" AllowsTransparency="True" Background="Transparent" ShowInTaskbar="False" Topmost="True" Focusable="False" ShowActivated="False" &gt;
&lt;/Window&gt;
</code></pre>

The last one attribute is the one you need ShowActivated="False".

blocks|key|1733653|text|弄清楚了：window.WindowState+=+WindowState.Minimized;。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1733654|entityMap^0|5|17|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

Figured it out: <code>window.WindowState = WindowState.Minimized;</code>.

blocks|key|1518752|text|这就是对我有效的方法。它提供了TopMost，但没有焦点窃取。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1518753|++++protected+override+bool+ShowWithoutActivation
++++{
+++++++get+{+return+true;+}
++++}

++++private+const+int+WS_EX_TOPMOST+=+0x00000008;
++++protected+override+CreateParams+CreateParams
++++{
+++++++get
+++++++{
++++++++++CreateParams+createParams+=+base.CreateParams;
++++++++++createParams.ExStyle+%7C=+WS_EX_TOPMOST;
++++++++++return+createParams;
+++++++}
++++}|code-block|syntax|javascript|1518754|记住要忽略在Visual+Studio+designer或其他地方设置TopMost。|1518755|这是偷来的，错误的，借来的，从这里(单击解决方法)：|1518756|https://connect.microsoft.com/VisualStudio/feedback/details/401311/showwithoutactivation-is-not-supported-with-topmost|offset|length|1518757|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|0|3A|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|W|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|X|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|Y|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|Z|8|@]|9|@$M|10|N|11|1|12]]|A|$]]|$1|O|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|L]]]]

This is what worked for me. It provides TopMost but without focus-stealing. 

<pre><code> protected override bool ShowWithoutActivation
 {
 get { return true; }
 }

 private const int WS_EX_TOPMOST = 0x00000008;
 protected override CreateParams CreateParams
 {
 get
 {
 CreateParams createParams = base.CreateParams;
 createParams.ExStyle |= WS_EX_TOPMOST;
 return createParams;
 }
 }
</code></pre>

Remember to omit setting TopMost in Visual Studio designer, or elsewhere.

This is stolen, err, borrowed, from here (click on Workarounds):

<a href="https://connect.microsoft.com/VisualStudio/feedback/details/401311/showwithoutactivation-is-not-supported-with-topmost" rel="noreferrer">https://connect.microsoft.com/VisualStudio/feedback/details/401311/showwithoutactivation-is-not-supported-with-topmost</a>

blocks|key|1733834|text|我不知道这是否被认为是验尸，但这就是我所做的，因为我不能使用user32的"ShowWindow“和"SetWindowPos”方法。不，覆盖"ShowWithoutActivation“在这种情况下不起作用，因为新窗口应该总是在顶部。无论如何，我创建了一个以表单为参数的帮助器方法；当被调用时，它会显示表单，将表单放在最前面，并在不窃取当前窗口的焦点的情况下将其设为TopMost+(显然是这样，但用户不会注意到)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1733835|++++[DllImport("user32.dll")]
++++static+extern+IntPtr+GetForegroundWindow();

++++[DllImport("user32.dll")]
++++static+extern+IntPtr+SetForegroundWindow(IntPtr+hWnd);

++++public+static+void+ShowTopmostNoFocus(Form+f)
++++{
++++++++IntPtr+activeWin+=+GetForegroundWindow();

++++++++f.Show();
++++++++f.BringToFront();
++++++++f.TopMost+=+true;

++++++++if+(activeWin.ToInt32()+>+0)
++++++++{
++++++++++++SetForegroundWindow(activeWin);
++++++++}
++++}|code-block|syntax|javascript|1733836|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I don't know if this is considered as necro-posting, but this is what I did since I couln't get it working with user32's "ShowWindow" and "SetWindowPos" methods. And no, overriding "ShowWithoutActivation" doesn't work in this case since the new window should be always-on-top.
Anyway, I created a helper method that takes a form as parameter; when called, it shows the form, brings it to the front and makes it TopMost without stealing the focus of the current window (apparently it does, but the user won't notice).

<pre><code> [DllImport("user32.dll")]
 static extern IntPtr GetForegroundWindow();

 [DllImport("user32.dll")]
 static extern IntPtr SetForegroundWindow(IntPtr hWnd);

 public static void ShowTopmostNoFocus(Form f)
 {
 IntPtr activeWin = GetForegroundWindow();

 f.Show();
 f.BringToFront();
 f.TopMost = true;

 if (activeWin.ToInt32() &gt; 0)
 {
 SetForegroundWindow(activeWin);
 }
 }
</code></pre>

blocks|key|1518946|text|我需要用我的window+TopMost做到这一点。我实现了上面的PInvoke方法，但是发现我的Load事件没有像上面的Talha那样被调用。我终于成功了。也许这会对某人有帮助。以下是我的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1518947|++++++++form.Visible+=+false;
++++++++form.TopMost+=+false;
++++++++ShowWindow(form.Handle,+ShowNoActivate);
++++++++SetWindowPos(form.Handle,+HWND_TOPMOST,
++++++++++++form.Left,+form.Top,+form.Width,+form.Height,
++++++++++++NoActivate);
++++++++form.Visible+=+true;++++//So+that+Load+event+happens|code-block|syntax|javascript|1518948|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I needed to do this with my window TopMost. I implemented the PInvoke method above but found that my Load event wasn't getting called like Talha above. I finally succeeded. Maybe this will help someone. Here is my solution:

<pre><code> form.Visible = false;
 form.TopMost = false;
 ShowWindow(form.Handle, ShowNoActivate);
 SetWindowPos(form.Handle, HWND_TOPMOST,
 form.Left, form.Top, form.Width, form.Height,
 NoActivate);
 form.Visible = true; //So that Load event happens
</code></pre>

blocks|key|1518991|text|你不需要让它变得如此复杂。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1518992|a+=+new+Assign_Stock();+
a.MdiParent+=+this.ParentForm;
a.Visible+=+false;+++//hide+for+a+bit.+++++++++++++++++
a.Show();+//show+the+form.+Invisible+form+now+at+the+top.
this.Focus();+//focus+on+this+form.+make+old+form+come+to+the+top.
a.Visible+=+true;+//make+other+form+visible+now.+Behind+the+main+form.|code-block|syntax|javascript|1518993|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You don't need to make it anywhere near as complicated.
<pre><code>a = new Assign_Stock(); 
a.MdiParent = this.ParentForm;
a.Visible = false; //hide for a bit. 
a.Show(); //show the form. Invisible form now at the top.
this.Focus(); //focus on this form. make old form come to the top.
a.Visible = true; //make other form visible now. Behind the main form.
</code></pre>

I'm using a Form to show notifications (it appears at the bottom right of the screen), but when I show this form it steals the focus from the main Form. Is there a way to show this "notification" form without stealing focus?

Show a Form without stealing focus?

Visual Studio

我使用一个窗体来显示通知(它出现在屏幕的右下角)，但是当我显示这个窗体时，它会抢占主窗体的焦点。有没有办法在不抢占焦点的情况下显示这个“通知”表单？

问显示窗体而不抢占焦点？
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