G
gentlesir
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小弟初学delphi,积分少,全部积分只有200可送<br>小弟有看到一些例子中含有如下语句,<br>Coolbar1.Perform(RB_DELETEBAND, 0, 0);<br><br>selstart := perform( em_lineindex, linenumber, 0 ); <br><br>ComboBox1.Perform(CB_SETDROPPEDWIDTH, 200, 0); <br><br>toolbar1.Perform(TB_SETBUTTONSIZE, 0, MakeLParam(50, 50)); <br><br>CheckBox1.Perform(BM_SETCHECK, Ord(CheckIt), 0);<br><br>DateTimePicker1.Perform(DTM_SETFORMAT, 0, DWORD(PCHAR('MM/dd/yyyy'))); <br><br>panel1.perform(WM_SysCommand, SC_DragMove, 0);<br><br>这些前缀RB_ , em_ ,CB_ ,TB_ ,BM_ ,DTM_ 等的含义是什么?能否列出他们的完整列表<br><br>或者给出相应的网页连接。<br>