Thread View: comp.os.os2.programmer
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Started by John McGarvey
Thu, 16 May 1991 02:19
Re: Drag-and-Drop interface
Author: John McGarvey
Date: Thu, 16 May 1991 02:19
Date: Thu, 16 May 1991 02:19
21 lines
1449 bytes
1449 bytes
In OS2 1.2 you will find some drag-and-drop: you can drag a file to the print manager to print it, or to (say) an editor program in the start list to edit it, etc. Unfortunately, this is a private protocol, and was never published. Some of us tried to decipher it anyway, with only partial success. So now 1.3 is out, with the official and very complicated, drag&drop api's. It must be said that this is not a finished job. The 1.3 file manager and program start list do not use these published API's yet, but instead use the secret 1.2 API's. So if you write an application to use the new drag-and-drop (take it from me, it is not easy) your application still won't work with 1.3 file manager. Moreover, the API introduces certain concepts like object types, rendering formats, rendering mechanisms, etc., which are not really defined unless the object is just a plain file. I think what has been done is a good start, and the complications are probably necessary. But I think we will have to wait for OS2 2.0 to make it usable for developers. John McGarvey
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