📄 tdataset_calcbuffer.htm
字号:
<html>
<head>
<title></title>
</head>
<!--#include virtual="/inc/header.php"-->
<table width="100%" border="0" cellspacing="0" cellpadding="2" bgcolor="#FFFFFF">
<tr>
<td align="left">
<span style="font-family:Helvetica,Arial; font-size:12pt; color:#000000"><b>TDataSet.CalcBuffer
<br>
</b><span style="font-family:Helv; font-size:9pt; color:#000000"><span style="font-family:Helv; font-size:9pt; color:#7F0000"><a href=tdataset.htm>TDataSet</a></span></span><span style="font-family:Helvetica,Arial; font-size:12pt; color:#000000"><b>
<br>
</b></span></span>
</td>
<td align="right">
<font face="Arial" size="2">
<a href="overview.htm">Top</a>
</font>
</td>
</tr>
</table>
<br><br>
<span style="font-family:Helvetica,Arial; font-size:10pt; color:#000000">Points to the record buffer used during an OnCalcFields event.
<br>
<br>
<b>property</b> CalcBuffer: PChar;
<br>
<br>
<b>Description</b>
<br>
Datasets use CalcBuffer to retrieve and store values when in the dsCalcFields state. The values of lookup fields and calculated fields are set in CalcBuffer, based on data field values retrieved from this buffer.
<br>
<br>
Most applications do not need to explicitly reference CalcBuffer. It is used automatically when the dataset is in the dsCalcFields state.
<br>
</span>
<!--#include virtual="/inc/footer.php"-->
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -