C#实现主窗体最小化后出现悬浮框及双击悬浮框恢复原窗体的方法

本文实例讲述了c#实现主窗体最小化后出现悬浮框及双击悬浮框恢复原窗体的方法。分享给大家供大家参考。具体如下：

这里演示c#实现主窗体最小化后出现悬浮框，双击悬浮框恢复原窗体的效果。类似于360桌面。

主窗体：frmmain

using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.linq;
using system.text;
using system.windows.forms;
using system.threading;
namespace appdemo
{
  public partial class frmmain : form
  {
    public frmmain()
    {
      initializecomponent();
    }
    /// <summary>
    /// 窗体初始状态
    /// </summary>
    private formwindowstate fwsprevious;
    /// <summary>
    /// 悬浮窗体
    /// </summary>
    private frmtopmost mytopmost;
    /// <summary>
    /// 主窗体的load事件
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void frmmain_load(object sender, eventargs e)
    {
      fwsprevious = this.windowstate;
      mytopmost = new frmtopmost(this);
    }
    /// <summary>
    /// 主窗体的sizechanged事件
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void frmmain_sizechanged(object sender, eventargs e)
    {
      if (this.windowstate == formwindowstate.minimized)
      {
        mytopmost.show();
        this.showintaskbar = false;
      }
      else if (this.windowstate != fwsprevious)
      {
        fwsprevious = this.windowstate;
      }
    }
    /// <summary>
    /// 还原窗口方法，即供悬浮窗口进行调用的。
    /// </summary>
    public void restorewindow()
    {
      this.windowstate = fwsprevious;
      this.showintaskbar = true;
    }
  }
}

悬浮子窗体：frmtopmost

using system;
using system.collections.generic;
using system.componentmodel;
using system.data;
using system.drawing;
using system.linq;
using system.text;
using system.windows.forms;
namespace appdemo
{
  /// <summary>
  /// 首先要设置其窗体的formborderstyle为none，然后设置其的topmost为true，接下来，就是主要是三个鼠标事件的处理
  /// </summary>
  public partial class frmtopmost : form
  {
    public frmtopmost()
    {
      initializecomponent();
    }
    /// <summary>
    /// 悬浮窗口的构造函数
    /// </summary>
    /// <param name="main"></param>
    public frmtopmost(frmmain main)
    {
      initializecomponent();
      pparent = main;
    }
    private point ptmousecurrrnetpos, ptmousenewpos, ptformpos, ptformnewpos;
    private bool blnmousedown = false;
    private frmmain pparent;
    /// <summary>
    /// 悬浮窗口的load事件
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void frmtopmost_load(object sender, eventargs e)
    {
      this.show();
      this.top = 100;
      this.left = screen.primaryscreen.bounds.width - 100;
      this.width = 80;
      this.height = 80;
    }
    private void frmtopmost_mousemove(object sender, mouseeventargs e)
    {
      if (blnmousedown)
      {
        ptmousenewpos = control.mouseposition;
        ptformnewpos.x = ptmousenewpos.x - ptmousecurrrnetpos.x + ptformpos.x;
        ptformnewpos.y = ptmousenewpos.y - ptmousecurrrnetpos.y + ptformpos.y;
        location = ptformnewpos;
        ptformpos = ptformnewpos;
        ptmousecurrrnetpos = ptmousenewpos;
      }
    }
    private void frmtopmost_mousedown(object sender, mouseeventargs e)
    {
      if (e.button == mousebuttons.left)
      {
        blnmousedown = true;
        ptmousecurrrnetpos = control.mouseposition;
        ptformpos = location;
      }
    }
    private void frmtopmost_mouseup(object sender, mouseeventargs e)
    {
      if (e.button == mousebuttons.left)
        blnmousedown = false;
    }
    /// <summary>
    /// 双击悬浮窗体，进行恢复主窗体。
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void frmtopmost_mousedoubleclick(object sender, mouseeventargs e)
    {
      switchtomain();
    }
    private void switchtomain()
    {
      pparent.restorewindow();
      this.hide();
    }
  }
}

希望本文所述对大家的c#程序设计有所帮助。