ماوس در WPF – آموزش WPF

دوشنبه ۲۸ تیر ۱۴۰۰
بازدید ۷۴۴ نفر
سعید سیفی زاده
(5 امتیاز از 1 رای)
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تصویر wpf-mouse_10572 ماوس در WPF - آموزش WPF

ماوس در WPF

در WPF انواع مختلفی از ورودی ماوس وجود دارند که از جمله آن ها می توان به MouseDown، MouseEnter، MouseLeave و غیره اشاره کرد. در مثال زیر ما تعداد از رویدادهای مربوط به ورودی ماوس را هندل خواهیم کرد.

مثال

یک پروژه WPF با نام WPFMouseInput ایجاد کرده و آن را مانند نمونه زیر تغییر دهید. محتوای فایل MainWindow.xaml:

<Window x:Class = "WPFMouseInput.MainWindow" 
   xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
   xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml" 
   xmlns:d = "http://schemas.microsoft.com/expression/blend/2008" 
   xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006" 
   xmlns:local = "clr-namespace:WPFMouseInput" 
   mc:Ignorable = "d" Title = "MainWindow" Height = "350" Width = "604">
	
   <StackPanel> 
      <Rectangle x:Name = "mrRec" Fill = "AliceBlue" 
         MouseEnter = "OnMouseEnter" MouseLeave = "OnMouseLeave"  
         MouseMove = "OnMouseMove" MouseDown = "OnMouseDown" Height = "100" Margin = "20"> 
      </Rectangle> 
		
      <TextBlock x:Name = "txt1" Height = "31" HorizontalAlignment = "Right" 
         Width = "250" Margin = "0,0,294,0" /> 
      <TextBlock x:Name = "txt2" Height = "31" HorizontalAlignment = "Right"  
         Width = "250" Margin = "0,0,294,0" /> 
      <TextBlock x:Name = "txt3" Height = "31" HorizontalAlignment = "Right"  
         Width = "250" Margin = "0,0,294,0" /> 		
   </StackPanel> 
</Window>

<Window x:Class = "WPFMouseInput.MainWindow"

xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:d = "http://schemas.microsoft.com/expression/blend/2008"

xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:local = "clr-namespace:WPFMouseInput"

mc:Ignorable = "d" Title = "MainWindow" Height = "350" Width = "604">

<Rectangle x:Name = "mrRec" Fill = "AliceBlue"

MouseEnter = "OnMouseEnter" MouseLeave = "OnMouseLeave"

MouseMove = "OnMouseMove" MouseDown = "OnMouseDown" Height = "100" Margin = "20">

</Rectangle>

<TextBlock x:Name = "txt1" Height = "31" HorizontalAlignment = "Right"

Width = "250" Margin = "0,0,294,0" />

<TextBlock x:Name = "txt2" Height = "31" HorizontalAlignment = "Right"

Width = "250" Margin = "0,0,294,0" />

<TextBlock x:Name = "txt3" Height = "31" HorizontalAlignment = "Right"

Width = "250" Margin = "0,0,294,0" />

</StackPanel>

</Window>

محتوای فایل MainWindow.xaml.cs:

using System.Windows; 
using System.Windows.Input; 
using System.Windows.Media; 
using System.Windows.Shapes; 
 
namespace WPFMouseInput { 

   public partial class MainWindow : Window {
	
      public MainWindow() { 
         InitializeComponent(); 
      } 
		
      private void OnMouseEnter(object sender, MouseEventArgs e) { 
         Rectangle source = e.Source as Rectangle; 
			
         if (source != null) { 
            source.Fill = Brushes.SlateGray; 
         } 
			
         txt1.Text = "Mouse Entered"; 
      } 
		
      private void OnMouseLeave(object sender, MouseEventArgs e) { 
		
         // Cast the source of the event to a Button. 
         Rectangle source = e.Source as Rectangle;
			
         // If source is a Button. 
         if (source != null) { 
            source.Fill = Brushes.AliceBlue; 
         } 
			
         txt1.Text = "Mouse Leave"; 
         txt2.Text = ""; 
         txt3.Text = ""; 
      } 
		
      private void OnMouseMove(object sender, MouseEventArgs e) { 
         Point pnt = e.GetPosition(mrRec); 
         txt2.Text = "Mouse Move: " + pnt.ToString(); 
      } 
		
      private void OnMouseDown(object sender, MouseButtonEventArgs e) { 
         Rectangle source = e.Source as Rectangle; 
         Point pnt = e.GetPosition(mrRec); 
         txt3.Text = "Mouse Click: " + pnt.ToString(); 
			
         if (source != null) { 
            source.Fill = Brushes.Beige; 
         } 
      } 		
   } 
}

using System.Windows;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Shapes;

namespace WPFMouseInput {

public partial class MainWindow : Window {

public MainWindow() {

InitializeComponent();

}

private void OnMouseEnter(object sender, MouseEventArgs e) {

Rectangle source = e.Source as Rectangle;

if (source != null) {

source.Fill = Brushes.SlateGray;

}

txt1.Text = "Mouse Entered";

}

private void OnMouseLeave(object sender, MouseEventArgs e) {

// Cast the source of the event to a Button.

Rectangle source = e.Source as Rectangle;

// If source is a Button.

if (source != null) {

source.Fill = Brushes.AliceBlue;

}

txt1.Text = "Mouse Leave";

txt2.Text = "";

txt3.Text = "";

}

private void OnMouseMove(object sender, MouseEventArgs e) {

Point pnt = e.GetPosition(mrRec);

txt2.Text = "Mouse Move: " + pnt.ToString();

}

private void OnMouseDown(object sender, MouseButtonEventArgs e) {

Rectangle source = e.Source as Rectangle;

Point pnt = e.GetPosition(mrRec);

txt3.Text = "Mouse Click: " + pnt.ToString();

if (source != null) {

source.Fill = Brushes.Beige;

}

زمانی که مثال فوق را کامپایل و اجرا کنید، خروجی زیر را تولید خواهد کرد:

تصویر wpf-mouse_10572_1 ماوس در WPF - آموزش WPF

زمانی که اشاره گر ماوس وارد مستطیل شود، رنگ مستطیل به صورت خودکار تغییر می کند. همچنین در پایین آن پیام ورود ماوس به همراه مختصات آن نیز نشان داده می شود.

تصویر wpf-mouse_10572_2 ماوس در WPF - آموزش WPF