請問各位先進， 我在 Host Application 內有一個 link list，可否在 dll 內 release 該 link list 的空間？ 我在 dll 內以 var 傳入host application 的鏈串列 head, tail，可是 dispose 時卻出現 記憶體存取錯誤的訊息，為什麼呢？ 軟還要更軟，我的Artwork http://delphi.ktop.com.tw/topic.php?TOPIC_ID=27674 Chinese Girl in Rhino3D http://rhino3d.com/gallery/figure/girl.htm

有人可以幫我解惑嗎？ :) 軟還要更軟，我的Artwork http://delphi.ktop.com.tw/topic.php?TOPIC_ID=27674 Chinese Girl in Rhino3D http://rhino3d.com/gallery/figure/girl.htm

You need to pass the Application global variable from your host application to your dll. And use the unit ShareMem in both projects as the very first unit. Something like the following in your dll:

procedure Setup(const App: TApplication); stdcall;
begin
    Application := App;
end;

I think you would better restore back the Application variable when your dll is being unloaded (althoug it should be nil?).

Thanks to William, it works. :) Further more, I add only ShareMem in both the use lists, but not to SetUp the application in the host application. It still works. What'are the differences between setting up and not setting up the application? 軟還要更軟，我的Artwork http://delphi.ktop.com.tw/topic.php?TOPIC_ID=27674 Chinese Girl in Rhino3D http://rhino3d.com/gallery/figure/girl.htm

Perhaps this could help?    http://delphi.ktop.com.tw/topic.php?TOPIC_ID=35228 Setting Application is mainly for VCL related stuff since VCL relies heavily on this variable. Anyway if you want to use VCL inside your dll, I would suggest using (runtime) package...

引言: Perhaps this could help? http://delphi.ktop.com.tw/topic.php?TOPIC_ID=35228 Setting Application is mainly for VCL related stuff since VCL relies heavily on this variable. Anyway if you want to use VCL inside your dll, I would suggest using (runtime) package...

Much thanks to william. 軟還要更軟，我的Artwork http://delphi.ktop.com.tw/topic.php?TOPIC_ID=27674 Chinese Girl in Rhino3D http://rhino3d.com/gallery/figure/girl.htm