我正在處理菜單的一部分以允許其用戶重新組織它。這個菜單有一個包含12個元素的網格(4x3),所有這些都是NavButton類型,我創建的類擴展了Button。在NavButton中,我有一個拖動功能,允許按鈕在整個網格中移動,目前我正在確定每個按鈕應該放在MouseEnter事件的哪個位置。WPF創建自定義事件
爲了確定在NavButtons應重新定位,我已經把薄的矩形,將照亮上的MouseEnter,還是讓我覺得這是他們應該如何工作。我的問題是,當NavButton被拖動到矩形上時,MouseEnter事件不會觸發,因爲鼠標位於Rectangle上方的NavButton上方。對不起,如果這聽起來令人困惑,但我會在下面發佈代碼。
所有這一切說,我想知道是否有可能在所有創建事件,以確定何時NavButton「進入」的矩形,類似於MouseEnter事件是如何工作的?
C#:
private void rectangle_MouseEnter(object sender, MouseEventArgs e)
{
foreach (UIElement uie in this.grids[tabNavigation.SelectedIndex].Children)
{
if (uie.GetType() == typeof(NavButton_UC))
{
if ((uie as NavButton_UC).IsDragging)
{
(sender as Rectangle).Fill = Brushes.Gray;
}
}
}
}
private void rectangle_MouseLeave(object sender, MouseEventArgs e)
{
(sender as Rectangle).Fill = Brushes.Black;
}
XAML:
//The Style is in my ResourceDictionary
<Style TargetType="Rectangle">
<Setter Property="Fill" Value="Black" />
<Setter Property="Height" Value="151" />
<Setter Property="Width" Value="10" />
<Setter Property="HorizontalAlignment" Value="Left" />
<Setter Property="Opacity" Value=".6" />
<EventSetter Event="MouseEnter" Handler="rectangle_MouseEnter" />
<EventSetter Event="MouseLeave" Handler="rectangle_MouseLeave" />
</Style>
...
<Grid Name="grid" Background="Black">
<Grid.ColumnDefinitions>
<ColumnDefinition></ColumnDefinition>
<ColumnDefinition></ColumnDefinition>
<ColumnDefinition></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition></RowDefinition>
<RowDefinition></RowDefinition>
<RowDefinition></RowDefinition>
<RowDefinition></RowDefinition>
<RowDefinition Height="22"></RowDefinition>
</Grid.RowDefinitions>
<Rectangle Grid.Row="0" Grid.Column="0" Name="rect00" />
<Rectangle Grid.Row="0" Grid.Column="1" Name="rect01" />
<Rectangle Grid.Row="0" Grid.Column="2" Name="rect02" />
<Rectangle Grid.Row="1" Grid.Column="0" Name="rect10" />
<Rectangle Grid.Row="1" Grid.Column="1" Name="rect11" />
<Rectangle Grid.Row="1" Grid.Column="2" Name="rect12" />
<Rectangle Grid.Row="2" Grid.Column="0" Name="rect20" />
<Rectangle Grid.Row="2" Grid.Column="1" Name="rect21" />
<Rectangle Grid.Row="2" Grid.Column="2" Name="rect22" />
<Rectangle Grid.Row="3" Grid.Column="0" Name="rect30" />
<Rectangle Grid.Row="3" Grid.Column="1" Name="rect31" />
<Rectangle Grid.Row="3" Grid.Column="2" Name="rect32" />
<TextBlock Grid.Row="5" Grid.Column="3" Name="TB" />
</Grid>
我是相當新的WPF,因此任何有識之士將不勝感激。謝謝。
感謝那篇文章!它幫助我更深入地瞭解Drag Events的工作原理。 – 2010-08-09 20:21:58