快速查看代碼顯示GMapControl
is an ItemsContainer
。
你應該能夠再整的ItemsPanel
模板並提供IsManipulationEnabled
屬性有:
<g:GMapControl x:Name="Map" ...>
<g:GMapControl.ItemsPanel>
<ItemsPanelTemplate>
<Canvas IsManipulationEnabled="True" />
</ItemsPanelTemplate>
</g:GMapControl.ItemsPanel>
<!-- ... -->
在這一點上,你需要的電纜鋪設Window
:
<Window ...
ManipulationStarting="Window_ManipulationStarting"
ManipulationDelta="Window_ManipulationDelta"
ManipulationInertiaStarting="Window_InertiaStarting">
,並提供適當的方法在代碼後面(無恥地從這個MSDN Walkthrough中偷竊和改編):
void Window_ManipulationStarting(
object sender, ManipulationStartingEventArgs e)
{
e.ManipulationContainer = this;
e.Handled = true;
}
void Window_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
// uses the scaling value to supply the Zoom amount
this.Map.Zoom = e.DeltaManipulation.Scale.X;
e.Handled = true;
}
void Window_InertiaStarting(
object sender, ManipulationInertiaStartingEventArgs e)
{
// Decrease the velocity of the Rectangle's resizing by
// 0.1 inches per second every second.
// (0.1 inches * 96 pixels per inch/(1000ms^2)
e.ExpansionBehavior.DesiredDeceleration = 0.1 * 96/(1000.0 * 1000.0);
e.Handled = true;
}