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Look for ChangeWindowMessageFilter

... Workaround [...}

Thanks sincerely RASHAD for your suggestion, but it's not a solution I find ... It's also often recommended to use ChangeWindowMessageFilterEx instead of ChangeWindowMessageFilter, but this API function is not (yet) implemented in PB if I look at the list provided by the team ...

Hi AZIJO,

Thanks for your reply.

To drag and drop files without problems, you must have both programs running as administrator.


I tried this ... Copy)
EnableGadgetDrop(#Text,#PB_Drop_Files,#PB_Drag_Copy)
ChangeWindowMessageFilter_(#WM_DROPFILES,#MSGFLT_ADD)
ChangeWindowMessageFilter_(#WM ...

Procedure ChangeWindowMessageFilter(param1,param2)
lib=OpenLibrary(#PB_Any,"user32.dll")
If lib
CallFunction(lib,"ChangeWindowMessageFilter",param1,param2)
CloseLibrary(lib)
EndIf
EndProcedure

ChangeWindowMessageFilter(#WM_DROPFILES,#MSGFLT_ADD)


I think the better way is to use prototypes ...

In that case
MSDN

[Using the ChangeWindowMessageFilter function is not recommended, as it has process-wide scope. Instead, use the ChangeWindowMessageFilterEx function to control access to specific windows as needed. ChangeWindowMessageFilter may not be supported in future versions of Windows.]

Okay, I'm guessing that because ChangeWindowMessageFilter is not available on XP, the code won't compile due to the unavailable API.

So, AZJIO, you might need to try something like below. It's how I used to deal with such errors in the past when an API wasn't supported by an OS.

I give no guarantee ...

Thank god, I'm not the only one who doesn't understand the question.

Anyway, look here:
https://learn.microsoft.com/en-us/windo ... sagefilter

Minimum is Windows Vista/Server 2008.

I use this code to make the program work on WindowsXP, but I still get an error calling ChangeWindowMessageFilter.
If OSVersion() > #PB_OS_Windows_Vista
ChangeWindowMessageFilter_(#WM_DROPFILES, #MSGFLT_ADD)
ChangeWindowMessageFilter_(#WM_COPYDATA, #MSGFLT_ADD)
ChangeWindowMessageFilter_(73 ...

... without admin privileges) and doesn't crash on XP
Procedure _ChangeWindowMessageFilter(msg, flag) : EndProcedure
Prototype _ChangeWindowMessageFilter ... DragQueryFile_(Dropped, -1, "", 0)
If Num
ClearList(DroppedFiles())
For i=0 To Num-1
Size = DragQueryFile_(Dropped, i, 0, 0)
Object$ = Space ...

On MSDN

Requirements:
Minimum supported client - Windows Vista [desktop apps only]

... ei=WNuAW73hB9GUsAe_64GoDQ&q=windows+administrator+drag+drop+ChangeWindowMessageFilter+admin+mode&oq=windows+administrator+drag+drop ... ab..0.2.223...33i160k1.0.pBP6A95GOE0

https://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/2fa935cf-be57-4bcc-9b96-7ee5a6b2b7a5/drag-n-drop ...

... to fix it earlier e.g. in PowerBasic or VB I have Register the prog for Messages with:
PowerBasic Code ... user32.dll")
IF hLib THEN
hProc = GetProcAddress(hLib, "ChangeWindowMessageFilter") 'bei xp gibts das nicht
IF hProc THEN 'Succeded
'bei der ...

I'm looking for a way to restore tray icons which have vanished due to an explorer problem and happened on this thread
http://www.purebasic.fr/english/viewtopic.php?t=31038
which would seem to do the job except for maw's comment regarding the need to use ChangeWindowMessageFilter for admin mode under ...

... but if your program is running as administrator it doesn't work. So for all of us always running as administrators has a problem here. The reason ... first detect if you're running Vista and then make a call to ChangeWindowMessageFilter, http://msdn2.microsoft.com/en-us/library/ms632675.aspx , and ...