相信很多人使用wpf时会选择自定义美观的窗口,因此会设置WindowStyle=“None” 取消自带的标题栏。但这样使用WindowState=“Maximized” 或者后台 this.WindowState = System.Windows.WindowState.Maximized; 最大化窗口会覆盖掉系统任务栏,即全屏了。这其实并不是个很好的体验。
在网上找答案,排名靠前的都是提供用hook钩子,篇幅很长,如:http://www.cnblogs.com/zhouyinhui/archive/2008/11/04/1326188.html
个人感觉这么一个小功能添加那么多的代码是不人性的,于是继续寻找,终于看到黎明的曙光:
Rect rcnormal;//定义一个全局rect记录还原状态下窗口的位置和大小。
/// <summary>
/// 最大化
/// </summary>
private void btnMaximize_Click(object sender, RoutedEventArgs e)
{
this.btnMaximize.Visibility = Visibility.Collapsed;
this.btnNormal.Visibility = Visibility.Visible;
rcnormal = new Rect(this.Left, this.Top, this.Width, this.Height);//保存下当前位置与大小
this.Left = 0;//设置位置
this.Top = 0;
Rect rc = SystemParameters.WorkArea;//获取工作区大小
this.Width = rc.Width;
this.Height = rc.Height;
}
/// <summary>
/// 还原
/// </summary>
private void btnNormal_Click(object sender, RoutedEventArgs e)
{
this.Left = rcnormal.Left;
this.Top = rcnormal.Top;
this.Width = rcnormal.Width;
this.Height = rcnormal.Height;
this.btnMaximize.Visibility = Visibility.Visible;
this.btnNormal.Visibility = Visibility.Collapsed;
}
好了,最大化和最小化事件自定义好了。那如果窗口拖动到顶端鼠标出界的话窗口将会最大化是不是?在wpf中 WindowStyle=“None” 下也还是全屏效果,而且会覆盖掉我们自定义的效果,这个时候你的this.width和this.height都无用了。那该怎么办呢?看下边:
在前台添加:
SizeChanged="Window_SizeChanged"
后台:
private void Window_SizeChanged(object sender, SizeChangedEventArgs e)
{
if (this.ActualHeight > SystemParameters.WorkArea.Height || this.ActualWidth > SystemParameters.WorkArea.Width)
{
this.WindowState = System.Windows.WindowState.Normal;
btnMaximize_Click(null, null);
}
}
或者在最大化后禁用拖动功能,待恢复原始窗口后在恢复拖动功能也可以。
ok,搞定! 这么简单的代码,相信大家看的懂吧~~
另附双击标题栏事件:
private void Grid_MouseDown(object sender, MouseButtonEventArgs e)
{
if (e.ClickCount == 2)
{
if (this.ActualWidth == SystemParameters.WorkArea.Width)
{
btnNormal_Click(null, null);
}
else
{
btnMaximize_Click(null, null);
}
}
}
最后总结代码:
Rect rcnormal;
protected virtual void InitializeEvent()
{
ControlTemplate baseWindowTemplate = (ControlTemplate)Application.Current.Resources["BaseWindowControlTemplate"];
TextBlock title = (TextBlock)baseWindowTemplate.FindName("lab_title", this);
title.Text = window_title;
title.Margin = mrg;
Button maxBtn = (Button)baseWindowTemplate.FindName("btnMax", this);
maxBtn.Visibility = btn_max;
bool tag = true;
maxBtn.Click += delegate
{
if (tag)
{
tag = false;
rcnormal = new Rect(this.Left, this.Top, this.Width, this.Height);
this.Left = 0;
this.Top = 0;
Rect rc = SystemParameters.WorkArea;
this.Width = rc.Width;
this.Height = rc.Height;
maxBtn.Style = (Style)Application.Current.Resources["btn_max2"];
}
else
{
tag = true;
this.Left = rcnormal.Left;
this.Top = rcnormal.Top;
this.Width = rcnormal.Width;
this.Height = rcnormal.Height;
maxBtn.Style = (Style)Application.Current.Resources["btn_max"];
}
};
Button closeBtn = (Button)baseWindowTemplate.FindName("btnClose", this);
closeBtn.Click += delegate
{
this.Close();
};
//拖动
Border borderTitle = (Border)baseWindowTemplate.FindName("borderTitle", this);
borderTitle.MouseMove += delegate(object sender, MouseEventArgs e)
{
//tag==true 只有窗口恢复到原始窗口后才可拖动
if (e.LeftButton == MouseButtonState.Pressed && tag==true) {
this.DragMove();
}
};