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cellspacing="1" cellpadding="1" bgcolor="#000000"><tr bgcolor="#FFFFFF"><td width="100%" colspan="4" align="left"><table width="95%" align="center"><tr><td class="font1"><p align="center"><br><font size="3">改造Hint输出方式</font><br><span class="nava"><font color="#CC9933">2000-06-25· -·中国计算机报</font></span></p> Delphi为每个可视构件(而非快速按钮专属)都提供了Hint及ShowHint特性，其中Hint属性指定文本提示盒中的文本，而ShowHint属性则决定鼠标指向构件时是否显示文本提示盒，当ShowHint值为True时，显示文本提示盒。用户可在对象监视器(Object Inspector)的属性栏中设置或在程序中修改Hint及ShowHint属性。<br> <br> 除此之外，Delphi还在类TApplication中提供了HintColor、HintPause、HintHidePause、HintShortPause几个属性来控制文本提示盒的输出方式。<br> <br> 一般来说，HintColor、HintPause、HintHidePause、HintShortPause通常在Form的OnCreate事件中设定它们的值(如有需要的话)，如以下的一段程序。<br> <br> ProcedureTMainForm.FormCreate(Sender:TObject);<br> begin<br> Application.HintPause:=0;｛使文本提示盒立即出现｝<br> Application.HintPause:=clBlue;｛以蓝色小方框的方式出现｝<br> Application.HintHidePause:=10000;｛延长停留时间为10秒｝<br> Application.HintShortPause:=100;<br> end;<br> <br> 另外，在编程中，我们还可以通过TApplication的OnHint事件获取鼠标指向构件的Hint文本。<br> <br> 事实上，Delphi提供的文本提示盒输出方框、文本字型都太小，既不美观亦不易看清。值得庆幸的是，Delphi2.0版提供了全部构件的源代码，我们可以通过对类TApplication的源码作一些小修改，增加一个HintFont的属性，即可象修改HintColor一样来修改文本提示盒的字体、<br> 字型大小等。<br> <br> TApplication是在Forms单元里定义的，因此让我们打开Forms.pas单元文件来作以下一些修改:<br> <br> ProcedureSetHintColor(Value:TColor｝;<br> ProcedureSetHintFont(Value:TFont);｛1997.04.19 MyNewIdea｝<br> Property HintColor:TColor read FHintColor Write SetHintColor;<br> Property HintFont:TFontwriteSetHintFont;｛1997.04.19Mynewidea｝<br> ProcedureTApplication.SetHintColor(Value:Color); //增加一个过程｛1997.04.19Mynewidea｝<br> <br> ProcedureTApplication.SetHintFont(Value:TFont); <br> begin<br>⌨️ 快捷键说明
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