Wp7相机按钮事件 [英] Wp7 Camera Button Event
本文介绍了Wp7相机按钮事件的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
在Windows Phone 7应用程式中,可以在程式码中撷取硬体相机按钮按下的事件吗?
现在当我按下相机按钮没有发生任何事情,我不知道如何挂钩事件。
Within a Windows Phone 7 app, is it possible to capture the hardware camera button pressed event in code? Right now when I press the camera button nothing happens and I can't figure out how to hook up to the event.
推荐答案
是的,可以。请检查此链接。这是事件的示例:
Yes you can. Check this link. This is an example of the events:
// The event is fired when the shutter button receives a half press.
CameraButtons.ShutterKeyHalfPressed += OnButtonHalfPress;
// The event is fired when the shutter button receives a full press.
CameraButtons.ShutterKeyPressed += OnButtonFullPress;
// The event is fired when the shutter button is released.
CameraButtons.ShutterKeyReleased += OnButtonRelease;
// Provide auto-focus with a half button press using the hardware shutter button.
private void OnButtonHalfPress(object sender, EventArgs e)
{
if (cam != null)
{
// Focus when a capture is not in progress.
try
{
this.Dispatcher.BeginInvoke(delegate()
{
txtDebug.Text = "Half Button Press: Auto Focus";
});
cam.Focus();
}
catch (Exception focusError)
{
// Cannot focus when a capture is in progress.
this.Dispatcher.BeginInvoke(delegate()
{
txtDebug.Text = focusError.Message;
});
}
}
}
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