图片框，双击和单击事件答案

【问题标题】：Picture box, Double click & Single click events图片框，双击和单击事件
【发布时间】：2013-11-21 21:21:49
【问题描述】：

我有一个奇怪的问题。我有一个图片框双击事件以及单击事件。问题是即使我双击控件，也会引发单击事件[如果我禁用单击事件，则双击事件正在工作]。 This problem has been discussed here ，但没有人给出正确答案

【问题讨论】：

只有在所有点击都完成后才需要触发事件。可能您可以使用计时器然后计数来保持点击次数。如果是一次触发单击，如果是 2，触发双击事件
类似support.microsoft.com/default.aspx?kbid=109865的东西

【解决方案1】：

有一个派生的Picturebox控件类

class PictureBoxCtrl:System.Windows.Forms.PictureBox
{
    // Note that the DoubleClickTime property gets 
    // the maximum number of milliseconds allowed between 
    // mouse clicks for a double-click to be valid.
    int previousClick = SystemInformation.DoubleClickTime;
    public new event EventHandler DoubleClick;

    protected override void OnClick(EventArgs e)
    {
        int now = System.Environment.TickCount;
        // A double-click is detected if the the time elapsed
        // since the last click is within DoubleClickTime.
        if (now - previousClick <= SystemInformation.DoubleClickTime)
        {
            // Raise the DoubleClick event.
            if (DoubleClick != null)
                DoubleClick(this, EventArgs.Empty);
        }
        // Set previousClick to now so that 
        // subsequent double-clicks can be detected.
        previousClick = now;
        // Allow the base class to raise the regular Click event.
        base.OnClick(e);
    }

    // Event handling code for the DoubleClick event.
    protected new virtual void OnDoubleClick(EventArgs e)
    {
        if (this.DoubleClick != null)
            this.DoubleClick(this, e);
    }
}

然后使用类创建对象

            PictureBoxCtrl imageControl = new PictureBoxCtrl();               
            imageControl.DoubleClick += new EventHandler(picture_DoubleClick);
            imageControl.Click += new EventHandler(picture_Click);

然后根据您的要求实现picture_Click 和picture_DoubleClick

void picture_Click(object sender, EventArgs e)
{
  //Custom Implementation
}

void picture_DoubleClick (object sender, EventArgs e)
{
  //Custom Implementation
}

Reference for this implementation

【讨论】：