在Universal Windows Platform (UWP)应用程序中,可以通过以下步骤来实现通过鼠标单击来移动文本框:
<TextBox x:Name="myTextBox" Width="200" Height="30" Text="Hello World!" />
myTextBox.PointerPressed += MyTextBox_PointerPressed;
myTextBox.PointerMoved += MyTextBox_PointerMoved;
private void MyTextBox_PointerPressed(object sender, PointerRoutedEventArgs e)
{
var textBox = (TextBox)sender;
textBox.CapturePointer(e.Pointer);
startPoint = e.GetCurrentPoint(null).Position;
}
private void MyTextBox_PointerMoved(object sender, PointerRoutedEventArgs e)
{
var textBox = (TextBox)sender;
if (textBox.PointerCaptures != null && textBox.PointerCaptures.Contains(e.Pointer))
{
var currentPoint = e.GetCurrentPoint(null).Position;
var distanceX = currentPoint.X - startPoint.X;
var distanceY = currentPoint.Y - startPoint.Y;
Canvas.SetLeft(textBox, Canvas.GetLeft(textBox) + distanceX);
Canvas.SetTop(textBox, Canvas.GetTop(textBox) + distanceY);
startPoint = currentPoint;
}
}
通过以上步骤,我们可以实现在UWP应用程序中通过鼠标单击来移动文本框。当鼠标按下时,记录下鼠标的起始位置,然后在鼠标移动时计算鼠标移动的距离,并根据距离移动文本框的位置。
这种功能在一些需要自由拖动UI元素的应用场景中非常有用,比如拖拽式的界面布局编辑器、图形设计工具等。
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