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delphi中SendMessage给一个Edit控件发送WM_SETTEXT消息
procedure SetWndText(hWnd:HWND; Text: string);
var
Ret: LongInt;
mText: PChar;
Buf: Integer;
begin
GetMem(mText, Length(Text));
StrCopy(mText, PChar(Text));
try
Buf := LongInt(mText);
SendMessage(hWnd,WM_SETTEXT, 0, Buf);
finally
FreeMem(mText, Length(Text));
end;
end;