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19.3.2 CheckBox控件
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19.3.2 CheckBox控件
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2006-10-13 14:41:00
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<div style='float:left;width:49%'>·<a href='100165533.htm'>19.2.6 类层次结构</a></div><div style='float:right;width:49%'>·<a href='100165534.htm'>19.3 标准控件和组件</a></div><div style='float:left;width:49%'>·<a href='100165535.htm'>19.3.1 Button控件</a></div><div style='float:right;width:49%'>·<a href='100165537.htm'>19.3.3 ComboBox控件与ListBox控件</a></div><div style='float:left;width:49%'>·<a href='100165538.htm'>19.3.4 DateTimePicker控件</a></div><div style='float:right;width:49%'>·<a href='100165539.htm'>19.3.5 ErrorProvider组件</a></div></div>
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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">19.3.2 CheckBox</span><span style="FONT-FAMILY: 黑体">控件</span></h3>
<p class="MsoNormal"><span lang="EN-US">CheckBox</span><span style="FONT-FAMILY: 宋体">控件用于接受来自用户的二状态或三状态响应。如果把</span><span lang="EN-US">ThreeState</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">，复选框的</span><span lang="EN-US">CheckState</span><span style="FONT-FAMILY: 宋体">属性就可以是以下</span><span lang="EN-US">3</span><span style="FONT-FAMILY: 宋体">个</span><span lang="EN-US">CheckState</span><span style="FONT-FAMILY: 宋体">枚举值之一：</span></p>
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<p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="EN-US" style="FONT-SIZE: 10.5pt">●</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体"> </span><span lang="EN-US" style="FONT-SIZE: 10.5pt">Checked</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体">：</span></p>
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<p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体">复选框有一个选中标记</span></p>
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<p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="EN-US" style="FONT-SIZE: 10.5pt">●</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体"> </span><span lang="EN-US" style="FONT-SIZE: 10.5pt">Unchecked</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体">：</span></p>
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<p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体">复选框没有一个选中标记</span></p>
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<p class="a4" style="MARGIN-LEFT: 10.7pt"><span lang="EN-US" style="FONT-SIZE: 10.5pt">●</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体"> </span><span lang="EN-US" style="FONT-SIZE: 10.5pt">Indeterminate</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体">：</span></p>
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<p class="a4" style="MARGIN-LEFT: 10.7pt"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体">在这种状态下，复选框为灰显</span></p>
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<p class="MsoNormal"><span lang="EN-US">Indeterminate</span><span style="FONT-FAMILY: 宋体">值只能在代码中设置，不能由用户设置。如果希望使用布尔值，还可以使用</span><span lang="EN-US">Checked</span><span style="FONT-FAMILY: 宋体">属性。</span></p>
<p class="MsoNormal"><span lang="EN-US">CheckedChanged</span><span style="FONT-FAMILY: 宋体">和</span><span lang="EN-US">CheckStateChanged</span><span style="FONT-FAMILY: 宋体">事件也十分有用。这些事件在</span><span lang="EN-US">CheckState</span><span style="FONT-FAMILY: 宋体">或</span><span lang="EN-US">Checked</span><span style="FONT-FAMILY: 宋体">属性改变时发生。捕获的这些事件可以根据复选框的新状态设置其他值。</span></p></div>
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<div style='float:left;width:49%'>·<a href='100165533.htm'>19.2.6 类层次结构</a></div><div style='float:right;width:49%'>·<a href='100165534.htm'>19.3 标准控件和组件</a></div><div style='float:left;width:49%'>·<a href='100165535.htm'>19.3.1 Button控件</a></div><div style='float:right;width:49%'>·<a href='100165537.htm'>19.3.3 ComboBox控件与ListBox控件</a></div><div style='float:left;width:49%'>·<a href='100165538.htm'>19.3.4 DateTimePicker控件</a></div><div style='float:right;width:49%'>·<a href='100165539.htm'>19.3.5 ErrorProvider组件</a></div></div>
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