激活一个表单和处理按钮在同一时间点击？ [英] Activate a form and process button click at the same time?

问题描述

我在C＃中使用Windows窗体。

我有一个包含toolStripButtons的几个工具栏的主表单。使用另一个包含数据的表单后，主表单失去焦点，点击一个toolStripButton不会触发OnClick事件：第一次点击激活主窗体，只有第二次点击实际上是按下按钮。我需要用户只点击一次按钮触发一个Click事件，关于如何做到这一点的任何想法？
$ b

注意：

• 我正在使用MDI 点击父窗体按钮也没有问题。但现在最重要的是让表单自由地浮动在多个显示器上。
  
• 工作表单具有作为Owner属性的主窗体，这样它们就保持在主窗体的顶部。
li>

• 当我点击一个不活动的窗体的按钮时，MouseHover，MouseEnter，MouseDown和MouseUp都不会被触发。它只是触发主窗体的Activate事件。
  
• 在主窗体中有一个treeView（位于面板内部的一个tabContainer中的tabControl内）。它的项目是在第一次鼠标点击时选择的，即使主窗体不活动。我想不是所有的控件都是相同的！

解决方案

它继承 ToolStrip 并处理 WndProc 。这是做到这一点的一种方法。还有其他的。

  private class MyToolStrip：ToolStrip 
 {
 private const uint WM_LBUTTONDOWN = 0x201; 
 private const uint WM_LBUTTONUP = 0x202; 
 
 private static bool down = false; 
 $ b保护覆盖void WndProc（ref Message m）
 {
 if（m.Msg == WM_LBUTTONUP&&！down）
 {
 m.Msg =（int）WM_LBUTTONDOWN; 
 base.WndProc（ref m）; 
 m.Msg =（int）WM_LBUTTONUP; 
} 
 
 if（m.Msg == WM_LBUTTONDOWN）down = true; 
 if（m.Msg == WM_LBUTTONUP）down = false; 
 base.WndProc（ref m）; 
} 
} 
  

我也看到了这个解决方案：

  protected override void WndProc（ref Message m）
 {
 // WM_MOUSEACTIVATE = 0x21 
 if m.Msg == WM_MOUSEACTIVATE&&&&&&&&&< this.Focused）
 this.Focus（）; 
 base.WndProc（ref m）; 
 
 
 
 $ b我在我工作的最后一个地方遇到了这个问题，我认为解决方案I想出了更像后者，但我没有访问我使用的确切代码。
I'm using Windows Forms in C#.

I have a main form with a couple of toolbars that contain toolStripButtons. After working with another form that contains data, the main form loses focus and clicking on a toolStripButton does not trigger OnClick event: the first click activates the main form, and only the second click actually pushes the button. I need the user to click a button only once to trigger a Click event, any ideas on how to do that? Thanks.

Notes:


I was using MDI and there were no problems clicking on the parent's form buttons. But now the paramount is to have forms freely floating across multiple displays.
The worker forms have the main form as the Owner property, this way they stay on top of the main form.
When I click on the button of an inactive form, none of MouseHover, MouseEnter, MouseDown nor MouseUp fires. It's just main form's Activate event that fires.
There is a treeView (inside a tabControl, inside a splitContainer, inside a panel), on the main form. Its items are selected upon a first mouse click, even if the main form is inactive. I guess not all controls are equal!

解决方案
What you need to do is create a class that inherits ToolStrip and handles the WndProc. This is one way to do it. There are others.
private class MyToolStrip : ToolStrip
{
    private const uint WM_LBUTTONDOWN = 0x201;
    private const uint WM_LBUTTONUP   = 0x202;

    private static bool down = false;

    protected override void WndProc(ref Message m)
    {
        if (m.Msg == WM_LBUTTONUP && !down)
        {
            m.Msg = (int)WM_LBUTTONDOWN;
            base.WndProc(ref m);
            m.Msg = (int)WM_LBUTTONUP;
        }

        if (m.Msg == WM_LBUTTONDOWN) down = true;
        if (m.Msg == WM_LBUTTONUP)   down = false;
        base.WndProc(ref m);
    }
}
I've also seen this solution:
protected override void WndProc(ref Message m)
{
    // WM_MOUSEACTIVATE = 0x21
    if (m.Msg == WM_MOUSEACTIVATE && this.CanFocus && !this.Focused)
        this.Focus();
    base.WndProc(ref m);
}
I ran into this at the last place I worked, I think the solution I came up with worked more like the latter, but I don't have access to the exact code I used.

                        
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