function OnEnd()
string szDLL, szReg, szCmd;
begin
szReg = WINSYSDIR ^ "regsvr32.exe";
szDLL = TARGETDIR ^ "MYDLL.dll"; //如果是MSI工程，可以用INSTALLDIR代替TARGETDIR
szCmd = "/s \"" + szDLL + "\""; //增加靜默參數(shù)s, 增加 \” 防止目錄路徑含空格的情況。
if (!REMOVEONLY) then
LaunchAppAndWait(szReg, szCmd, WAIT);
endif;
end;