delphi7中，richedit控件的对齐方式属性更改无效果

RichEdit1.Paragraph.Alignment := TAlignment(2) 居中

RichEdit1.Paragraph.Alignment := TAlignment(0) 左对齐

RichEdit1.Paragraph.Alignment := TAlignment(1) 右对齐

RichEdit1.SelectAll

RichEdit1.Paragraph.Alignment:=taLeftJustify// switch for other alignments

RichEdit1.SelLength:=0

在窗体的OnCreate或OnShow 中加入（适合少数Edit右对齐情况）：

SetWindowLong(Edit1.Handle,GWL_STYLE,GetWindowLong(Edit1.Handle,GWL_STYLE) or Es_right)

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