[Aaronyang] 写给自己的WPF4.5 笔记[3MenuItem中的icon]

2022-08-04 18:41:40

敢于尝试，就等于你已经向成功迈出了第一步 --Aaronyang的博客（www.ayjs.net）-www.8mi.me

=============时隔两年后再看WPF==========

因为以前的经验，所以继承FrameworkElement，我就简写继承FWE ，继承UIElement就写继承UIE

后面重头戏就是blend中的开发，不想写的千篇一律。如果期待，左侧有关注按钮。

1. v1.0菜单

新建WPF项目，右键项目-属性-资源

导入几个项目用到的图标

第一种：带图标MenuItem指定图标方式

自己在项目里面新建一个文件夹，比如叫icons，然后把图片拷贝进去，Source写法，是相对路径程序集名称;component/正常路径

 <MenuItem Header="打开">
                    <MenuItem.Icon>
                        <Image Width="16" Height="16" Source="/blend1;component/icons/user_edit.png"/>
                    </MenuItem.Icon>
                </MenuItem>

可视化操作，鼠标放到Image上，按F4设置属性

也可以生成该方式路径

第二种：

使用程序集中的资源，有人说在xaml中不能使用，只能在后台代码，使用wpf pack uri的知识去使用

其实，我们在xaml中可以使用数据绑定的方式使用

但是奇怪的没有用..但是如果是字符串的资源就可以显示出来了，估计这里缺少个值转换器，需要增加一个。

算了吧，假如我们在后台需要怎么写，我们定义这个Image的name为imgHistoryMenu

OK,我们在窗体的Loaded中加载代码：

     private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            var imghistoryImage = blend1.Properties.Resources.folder_magnify;
            MemoryStream memory = new MemoryStream();
            imghistoryImage.Save(memory, System.Drawing.Imaging.ImageFormat.Png);
            ImageSourceConverter converter = new ImageSourceConverter();
            ImageSource source = (ImageSource)converter.ConvertFrom(memory);
            imgHistoryMenu.Source = source;
        }

效果：

当然，我真的不想在后台编写任何代码，我只想在xaml中使用..

第三种：也是我最推荐大家用的矢量图标方式，使用Viewbox+Path的方式

[Aaronyang] 写给自己的WPF4.5 笔记[3MenuItem中的icon]

   <MenuItem Header="打印">
                    <MenuItem.Icon>
                        <Viewbox Width="16" Height="16">
                            <Path Data="M30.754,48.363001L42.636803,48.363001 42.935001,49.115 30.754,49.115z M21.746382,48.363001L27.137999,48.363001 27.137999,49.115 21.429998,49.115z M20.6849,45.4153L17.523399,51.042898 46.934898,51.042898 43.773399,45.4153 39.369801,45.4153 39.369801,45.790197 22.7057,45.790197 22.8633,45.4153z M18.976601,25.266799C17.4596,25.266799,16.2292,26.4987,16.2292,28.015599L16.2292,37.561098C16.2292,39.079397,17.4596,40.309797,18.976601,40.309797L21.2995,40.309797 43.158798,40.309797 45.4818,40.309797C46.997398,40.309797,48.229198,39.079397,48.229198,37.561098L48.229198,28.015599C48.229198,26.4987,46.997398,25.266799,45.4818,25.266799z M2.7473803,14.789L61.251301,14.789C62.770802,14.789,64,16.019401,64,17.536401L64,42.666498C64,44.184797,62.770802,45.4153,61.251301,45.4153L46.026001,45.4153 50.2878,53.004999 14.1706,53.004999 18.432301,45.4153 2.7473803,45.4153C1.23175,45.4153,0,44.184797,0,42.666498L0,17.536401C0,16.019401,1.23175,14.789,2.7473803,14.789z M48.229,4.7119999L51.174999,4.7119999 51.174999,13.610999 48.229,13.610999z M12.697,4.7119999L15.642,4.7119999 15.642,13.610999 12.697,13.610999z M17.98934,0L46.010761,0C46.987385,0,47.778999,0.79034328,47.778999,1.7669096L47.778999,11.254 16.221001,11.254 16.221001,1.7669096C16.221001,0.79034328,17.012718,0,17.98934,0z" Stretch="Uniform" Fill="#FF5389DF" Width="138" Height="138" Margin="0,0,0,0" RenderTransformOrigin="0.5,0.5">
                                <Path.RenderTransform>
                                    <TransformGroup>
                                        <TransformGroup.Children>
                                            <RotateTransform Angle="0" />
                                            <ScaleTransform ScaleX="1" ScaleY="1" />
                                        </TransformGroup.Children>
                                    </TransformGroup>
                                </Path.RenderTransform>
                            </Path>
                        </Viewbox>
                    </MenuItem.Icon>
                </MenuItem>