LMDshelllist dragging stops after viewstyle change

FootFit

Concerning LMDshelllist
I am facing the following problem.

It can be easily reproduced with the demo LMDfilemanager.

You can
drag and drop files from and into the selected folder.

However,
after a viewstyle change, it becomes impossible to drag files into the
folder.

Whatever
the viewstyle.

Is there any solution for this behaviour?

Rafael Maricca (LMD)

Which version are you using (and which OS)? I just tested against LMD 2013 release using the FileManager demo. Regardless which Viewstyle I use Drag&Drop does work.

Anyway: If for some reason Drag&Drop does not work, simple RecreateWnd call (to recreate handle - this is the place where RegisterDrop method is called) should be sufficient.

FootFit

My version of the Shellpack is 2013

My OS is Windows 7 Prof 32b

Do you mean a recreatewnd call of the form which contains the LMDshelllist component? This works, but it is rather annoying.

Rafael Maricca (LMD)

No, the ShellList (or Drag Target) only.

FootFit

Does the Shelllist component have a recreatewnd method? I could not find it. So how should I implement this?

Rafael Maricca (LMD)

Either create descendant (THackShellList) making RecreateWnd public and then casting your ShellList to this class or simply send message to the shell list control (SendMessage(myShellList.Handle, CM_RECREATEWND, 0, 0);  --> RecreateWND method actually does nothing else. 

FootFit

Thanks, but I figured out that for two-way drag&drop you first have to reset the drop option, as follows.

 

    lmdshelllist1.Options:= lmdshelllist1.Options -[loallowdrop];
    SendMessage(lmdshelllist1.Handle, CM_RECREATEWND, 0, 0);
    lmdshelllist1.Options:= lmdshelllist1.Options +[loallowdrop];