HOW TO:置放工具提示
更新:2007 年 11 月
這個範例在說明如何指定工具提示在螢幕上的位置。
範例
您可以使用 ToolTip 及 ToolTipService 類別中所定義的一組五個屬性,放置工具提示。下表顯示這兩組五個屬性,並根據類別提供參考文件的連結。
根據類別的對應工具提示屬性
如果您使用 ToolTip 物件定義工具提示的內容,就可以使用任一類別的屬性,但是 ToolTipService 屬性的優先順序最高。請對未定義為 ToolTip 物件的工具提示,使用 ToolTipService 屬性。
下圖顯示如何使用這些屬性來放置工具提示。雖然圖示中的可延伸標記語言 (XAML) 範例有說明如何設定 ToolTip 類別所定義的屬性,但是 ToolTipService 類別對應的屬性會遵循相同的配置規則。如需 Placement 屬性之可能值的詳細資訊,請參閱快顯功能表放置行為。
使用 Placement 屬性放置工具提示
使用 Placement 和 PlacementRectangle 屬性放置工具提示
使用 Placement、PlacementRectangle 和 Offset 屬性放置工具提示
下列範例說明如何使用 ToolTip 屬性,以指定內容為 ToolTip 物件之工具提示的位置。
<Ellipse Height="25" Width="50"
Fill="Gray"
HorizontalAlignment="Left"
ToolTipService.InitialShowDelay="1000"
ToolTipService.ShowDuration="7000"
ToolTipService.BetweenShowDelay="2000">
<Ellipse.ToolTip>
<ToolTip Placement="Right"
PlacementRectangle="50,0,0,0"
HorizontalOffset="10"
VerticalOffset="20"
HasDropShadow="false"
Opened="whenToolTipOpens"
Closed="whenToolTipCloses"
>
<BulletDecorator>
<BulletDecorator.Bullet>
<Ellipse Height="10" Width="20" Fill="Blue"/>
</BulletDecorator.Bullet>
<TextBlock>Uses the ToolTip Class</TextBlock>
</BulletDecorator>
</ToolTip>
</Ellipse.ToolTip>
</Ellipse>
//Create an ellipse that will have a
//ToolTip control.
Ellipse ellipse1 = new Ellipse();
ellipse1.Height = 25;
ellipse1.Width = 50;
ellipse1.Fill = Brushes.Gray;
ellipse1.HorizontalAlignment = HorizontalAlignment.Left;
//Create a tooltip and set its position.
ToolTip tooltip = new ToolTip();
tooltip.Placement = PlacementMode.Right;
tooltip.PlacementRectangle = new Rect(50, 0, 0, 0);
tooltip.HorizontalOffset = 10;
tooltip.VerticalOffset = 20;
//Create BulletDecorator and set it
//as the tooltip content.
BulletDecorator bdec = new BulletDecorator();
Ellipse littleEllipse = new Ellipse();
littleEllipse.Height = 10;
littleEllipse.Width = 20;
littleEllipse.Fill = Brushes.Blue;
bdec.Bullet = littleEllipse;
TextBlock tipText = new TextBlock();
tipText.Text = "Uses the ToolTip class";
bdec.Child = tipText;
tooltip.Content = bdec;
//set tooltip on ellipse
ellipse1.ToolTip = tooltip;
下列範例說明如何使用 ToolTipService 屬性,以指定內容不是 ToolTip 物件之工具提示的位置。
<Ellipse Height="25" Width="50"
Fill="Gray"
HorizontalAlignment="Left"
ToolTipService.InitialShowDelay="1000"
ToolTipService.ShowDuration="7000"
ToolTipService.BetweenShowDelay="2000"
ToolTipService.Placement="Right"
ToolTipService.PlacementRectangle="50,0,0,0"
ToolTipService.HorizontalOffset="10"
ToolTipService.VerticalOffset="20"
ToolTipService.HasDropShadow="false"
ToolTipService.ShowOnDisabled="true"
ToolTipService.IsEnabled="true"
ToolTipOpening="whenToolTipOpens"
ToolTipClosing="whenToolTipCloses"
>
<Ellipse.ToolTip>
<BulletDecorator>
<BulletDecorator.Bullet>
<Ellipse Height="10" Width="20" Fill="Blue"/>
</BulletDecorator.Bullet>
<TextBlock>Uses the ToolTipService class</TextBlock>
</BulletDecorator>
</Ellipse.ToolTip>
</Ellipse>
//Create and Ellipse with the BulletDecorator as
//the tooltip
Ellipse ellipse2 = new Ellipse();
ellipse2.Name = "ellipse2";
this.RegisterName(ellipse2.Name, ellipse2);
ellipse2.Height = 25;
ellipse2.Width = 50;
ellipse2.Fill = Brushes.Gray;
ellipse2.HorizontalAlignment = HorizontalAlignment.Left;
//set tooltip timing
ToolTipService.SetInitialShowDelay(ellipse2, 1000);
ToolTipService.SetBetweenShowDelay(ellipse2, 2000);
ToolTipService.SetShowDuration(ellipse2, 7000);
//set tooltip placement
ToolTipService.SetPlacement(ellipse2, PlacementMode.Right);
ToolTipService.SetPlacementRectangle(ellipse2,
new Rect(50, 0, 0, 0));
ToolTipService.SetHorizontalOffset(ellipse2, 10.0);
ToolTipService.SetVerticalOffset(ellipse2, 20.0);
ToolTipService.SetHasDropShadow(ellipse2, false);
ToolTipService.SetIsEnabled(ellipse2, true);
ToolTipService.SetShowOnDisabled(ellipse2, true);
ellipse2.AddHandler(ToolTipService.ToolTipOpeningEvent,
new RoutedEventHandler(whenToolTipOpens));
ellipse2.AddHandler(ToolTipService.ToolTipClosingEvent,
new RoutedEventHandler(whenToolTipCloses));
//define tooltip content
BulletDecorator bdec2 = new BulletDecorator();
Ellipse littleEllipse2 = new Ellipse();
littleEllipse2.Height = 10;
littleEllipse2.Width = 20;
littleEllipse2.Fill = Brushes.Blue;
bdec2.Bullet = littleEllipse2;
TextBlock tipText2 = new TextBlock();
tipText2.Text = "Uses the ToolTipService class";
bdec2.Child = tipText2;
ToolTipService.SetToolTip(ellipse2, bdec2);
stackPanel_1_2.Children.Add(ellipse2);