单击时用图片替换按钮，然后在WPF中的图片顶部创建一个新按钮
本文关键字：按钮 创建 一个 新按钮 顶部 WPF 替换 然后 单击 | 更新日期: 2023-09-27 18:26:31
我想创建一个小程序，让我从几个互连部件的图像中进行选择，以创建本质上的路径。这个想法是用一个按钮来连接下一段路径。单击时，此按钮将提供可以放置在那里的选项选择，然后放置所选图像，并将按钮移动到路径的新末端。
我的问题是，到目前为止，我的c#经验仅限于静态UI和操作文本字段或整个新窗口。我不知道从哪里开始制作一个UI，在这个UI中，按钮被移动，图像被放置在程序的初始启动之后。我想也许使用网格控件和一些代码来操作它可能是答案，但我真的不知道该怎么做。我在以前的程序中一直使用WPF，并认为在这种情况下它仍然可行。
有人能为我指明正确的方向，让我弄清楚如何动态控制程序窗口的一部分，以实现我的目标吗？我对这个半模糊的问题感到抱歉，但作为一个新的业余程序员，这已经超出了我的掌控范围。
这里有一个快速而粗糙的例子，但它展示了在运行时添加和定位控件的一些基础知识。
需要注意的事项：
- 如果希望能够显式定位x、y，请将控件添加到画布中
- 我对位置项使用了UserControls，只是添加了实例
- 如果你正在构建一个游戏，如果它有任何显著的大小和复杂性，不要使用WPF。我去过那里，做过，在上面制作了一个完整的多人空间街机/动作游戏。它对游戏来说太慢了
下面是代码转储。
//PathBuilding.xaml
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:TravianResourceProd" x:Class="TravianResourceProd.PathBuilding"
Title="PathBuilding" Height="466.377" Width="621.509">
<Grid x:Name="drawingGrid" Background="#FFC2C2C2" >
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition Width="0*"/>
</Grid.ColumnDefinitions>
<Canvas Background="#FFB3B3B3" Margin="0,0,0,-0.377" x:Name="DrawCanvas" MouseMove="DrawCanvas_MouseMove" MouseUp="Grid_MouseUp">
<local:ActiveLocation x:Name="primarySegment" HorizontalAlignment="Left" VerticalAlignment="Top" Loaded="ActiveLocation_Loaded" Canvas.Left="67" Canvas.Top="98"/>
</Canvas>
</Grid>
</Window>
//PathBuilding.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
namespace TravianResourceProd
{
/// <summary>
/// Interaction logic for PathBuilding.xaml
/// </summary>
public partial class PathBuilding : Window
{
public PathBuilding()
{
InitializeComponent();
_ConnectorLine = new Line();
_ConnectorLine.Stroke = new SolidColorBrush(Colors.DarkBlue);
_ConnectorLine.Visibility = System.Windows.Visibility.Hidden;
_locationSelector = new LocationOptions();
_locationSelector.Visibility = System.Windows.Visibility.Hidden;
DrawCanvas.Children.Add(_ConnectorLine);
DrawCanvas.Children.Add(_locationSelector);
}
private Line _ConnectorLine;
private bool _AddMode = false;
private LocationOptions _locationSelector;
private void ActiveLocation_Loaded(object sender, RoutedEventArgs e)
{
primarySegment.btnAddSegment.Click += (object sender1, RoutedEventArgs e1) =>
{
//show the type selector
_locationSelector.Visibility = System.Windows.Visibility.Visible;
var loc = _locationSelector.TransformToAncestor(drawingGrid)
.Transform(new Point(0, 0));
Canvas.SetLeft(_locationSelector, Mouse.GetPosition(DrawCanvas).X + 80);
Canvas.SetTop(_locationSelector, Mouse.GetPosition(DrawCanvas).Y - 50);
};
_locationSelector.btnTypeOne.Click += (object s, RoutedEventArgs e2) =>
{
_AddMode = true;
_ConnectorLine.Visibility = System.Windows.Visibility.Visible;
_locationSelector.Visibility = System.Windows.Visibility.Hidden;
};
}
private void Grid_MouseUp(object sender, MouseButtonEventArgs e)
{
if (!_AddMode)
return;
_AddMode = false;
_ConnectorLine.Visibility = System.Windows.Visibility.Hidden;
//Add the one we picked
var oldLoc = new OldLocation();
Canvas.SetLeft(oldLoc, Canvas.GetLeft(primarySegment));
Canvas.SetTop(oldLoc, Canvas.GetTop(primarySegment));
DrawCanvas.Children.Add(oldLoc);
//Add a line connecting old to new
var newestLine = new Line();
newestLine.Visibility = System.Windows.Visibility.Visible;
newestLine.Stroke = new SolidColorBrush(Colors.Brown);
newestLine.X1 = _ConnectorLine.X1;
newestLine.Y1 = _ConnectorLine.Y1;
newestLine.X2 = _ConnectorLine.X2 + 40;
newestLine.Y2 = _ConnectorLine.Y2 + 50;
DrawCanvas.Children.Add(newestLine);
//Move the active/primary to the new location
Canvas.SetLeft(primarySegment, e.GetPosition(this).X);
Canvas.SetTop(primarySegment, e.GetPosition(this).Y);
}
private void DrawCanvas_MouseMove(object sender, MouseEventArgs e)
{
try
{//reposition the line going from active location to mouse
_ConnectorLine.X1 = Canvas.GetLeft(primarySegment) + 70;
_ConnectorLine.Y1 = Canvas.GetTop(primarySegment) + 50;
_ConnectorLine.X2 = e.GetPosition(this).X - 5;
_ConnectorLine.Y2 = e.GetPosition(this).Y - 5;
}
catch (Exception)
{
}
}
}
}
//LocationOptions.xaml
<UserControl x:Class="TravianResourceProd.LocationOptions"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d" Height="109.359" Width="117.057">
<Grid Margin="0,0,-0.17,0.094">
<Button x:Name="btnTypeOne" Content="Type One" HorizontalAlignment="Left" VerticalAlignment="Top" Width="117" Height="33" Margin="0,0,-0.17,0" />
<Button x:Name="btnTypeTwo" Content="Type Two" HorizontalAlignment="Left" VerticalAlignment="Top" Width="117" Margin="0,38,-0.17,0" Height="33" />
</Grid>
</UserControl>
//OldLocation.xaml
<UserControl x:Class="TravianResourceProd.OldLocation"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d" Height="80" Width="80">
<Grid>
<Ellipse Stroke="#FF686868" StrokeThickness="8">
<Ellipse.Fill>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FF373737" Offset="1"/>
<GradientStop Color="#FF929292"/>
</LinearGradientBrush>
</Ellipse.Fill>
</Ellipse>
</Grid>
</UserControl>
//ActiveLocation.xaml
<UserControl x:Class="TravianResourceProd.ActiveLocation"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d" Height="80" Width="80">
<Grid>
<Ellipse Stroke="#FF1A9000" StrokeThickness="6">
<Ellipse.Fill>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FF62745E" Offset="1"/>
<GradientStop Color="#FF929292"/>
</LinearGradientBrush>
</Ellipse.Fill>
</Ellipse>
<Button x:Name="btnAddSegment" Content="" HorizontalAlignment="Left" VerticalAlignment="Top" Width="20" Height="22" FontSize="30" Margin="60,30,-0.302,0"/>
</Grid>
</UserControl>