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19.3.19 ToolBar控件
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19.3.19 ToolBar控件
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<div id="text"> <link href="css.css" rel="stylesheet" type="text/css" /><h3 style="MARGIN-TOP: 8.15pt; MARGIN-LEFT: 0cm; MARGIN-RIGHT: 0cm; FTEL: 8.15pt"><span lang="EN-US">19.3.19 ToolBar</span><span style="FONT-FAMILY: 黑体">控件</span></h3>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">工具栏在</span><span lang="EN-US">Windows</span><span style="FONT-FAMILY: 宋体">应用程序中是非常常见的特性。它们允许用户通过单击按钮来快速访问功能。工具栏一般拥有与菜单相同的功能，因为菜单选项和工具栏按钮在单击时常常执行相同的任务。</span></p>
<p class="MsoNormal"><span lang="EN-US">ToolBar</span><span style="FONT-FAMILY: 宋体">类是</span><span lang="EN-US">ToolBarButton</span><span style="FONT-FAMILY: 宋体">的容器。</span><span lang="EN-US">ToolBar</span><span style="FONT-FAMILY: 宋体">控件一般位于窗体顶部，菜单结构的下方。</span><span lang="EN-US">Appearance</span><span style="FONT-FAMILY: 宋体">属性使用</span><span lang="EN-US">ToolBarAppearance</span><span style="FONT-FAMILY: 宋体">枚举定义工具栏显示为</span><span lang="EN-US">Flat</span><span style="FONT-FAMILY: 宋体">还是</span><span lang="EN-US">Normal</span><span style="FONT-FAMILY: 宋体">。</span><span lang="EN-US">Normal</span><span style="FONT-FAMILY: 宋体">表示每个工具栏按钮看起来都像一个按钮。在选择</span><span lang="EN-US">Flat</span><span style="FONT-FAMILY: 宋体">时，可以看到按钮上的文本和图标，但按钮的边框不可见，除非把鼠标放在按钮上，按钮的边框才会显示出来。</span><span lang="EN-US">ToolBarButton</span><span style="FONT-FAMILY: 宋体">控件可以有一个图标，所以可以使用</span><span lang="EN-US">ImageList</span><span style="FONT-FAMILY: 宋体">属性管理工具栏图标。</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 宋体">要创建工具栏，应把</span><span lang="EN-US">ToolBar</span><span style="FONT-FAMILY: 宋体">控件从工具箱拖放到设计器上。把工具栏放在窗体上后，在属性窗口中选择</span><span lang="EN-US">Buttons</span><span style="FONT-FAMILY: 宋体">属性的省略号按钮，把</span><span lang="EN-US">ToolBarButton</span><span style="FONT-FAMILY: 宋体">控件添加到</span><span lang="EN-US">ToolBar</span><span style="FONT-FAMILY: 宋体">控件中。图</span><span lang="EN-US">19-6</span><span style="FONT-FAMILY: 宋体">显示了</span><span lang="EN-US">ToolBarButton Collection Editor</span><span style="FONT-FAMILY: 宋体">。</span></p>
<p align="center"><span lang="EN-US"><img height="297" src="19/image006.jpg" width="331" alt="" /></span></p>
<p style="FTEL: 8.15pt" align="center"><span style="FONT-FAMILY: 宋体">图</span><span lang="EN-US"> 19-6</span></p>
<p class="MsoNormal"><span lang="EN-US">ToolBarButton</span><span style="FONT-FAMILY: 宋体">添加到</span><span lang="EN-US">ToolBar</span><span style="FONT-FAMILY: 宋体">控件的</span><span lang="EN-US">ToolBarButtonCollection</span><span style="FONT-FAMILY: 宋体">中。为了确定按钮的类型，可以把</span><span lang="EN-US">Style</span><span style="FONT-FAMILY: 宋体">属性设置为一个</span><span lang="EN-US">ToolBarButtonStyle</span><span style="FONT-FAMILY: 宋体">枚举值。</span><span lang="EN-US">Style</span><span style="FONT-FAMILY: 宋体">选项有</span><span lang="EN-US">DropDownButton</span><span style="FONT-FAMILY: 宋体">、</span><span lang="EN-US">PushButton</span><span style="FONT-FAMILY: 宋体">、</span><span lang="EN-US">Separator</span><span style="FONT-FAMILY: 宋体">和</span><span lang="EN-US">ToggleButton</span><span style="FONT-FAMILY: 宋体">。</span><span lang="EN-US">PushButton</span><span style="FONT-FAMILY: 宋体">是标准按钮。</span><span lang="EN-US">DropDownButton</span><span style="FONT-FAMILY: 宋体">显示选中选项的上下文菜单。</span><span lang="EN-US">ToggleButton</span><span style="FONT-FAMILY: 宋体">是一个二状态的按钮，要么是按下</span><span lang="EN-US">(Pushed</span><span style="FONT-FAMILY: 宋体">属性设置为</span><span lang="EN-US">true)</span><span style="FONT-FAMILY: 宋体">，要么是释放</span><span lang="EN-US">(Pushed</span><span style="FONT-FAMILY: 宋体">属性设置为</span><span lang="EN-US">false)</span><span style="FONT-FAMILY: 宋体">。</span></p>
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