VC ATL, VB image list handle isn't fully accessible in VC++ ActiveX thru COM call

VB image list handle isn't fully accessible in VC++ ActiveX thru COM call

Author	Message
jerr #1 / 2	VB image list handle isn't fully accessible in VC++ ActiveX thru COM call Hi perhaps somebody met the situation when the some resource allocated in VB6 and afterward being sent to ActiveX as variant arg get not accessible in ActiveX (written on VC++ ) control for some reason. I got the situation that the passed imagelist's handle from VB6 can't be treated in ActiveX control. Pointer is valid, seems everything is Ok but an attempt to assign the handle to internal ActiveX's imagelist do nothing, meaning that the some wrapper class (i.e. CImageList) cannot recognize (to treat) images which this handle really point on. Problems with OS: -Windows XP,Windows 98. No problems with Windows2000. PS: The same case but with client written in BASIC.NET works nice everywhere. WOW. Your possible assistance will be very & very appreciated. Yuri Ovchinnikov Pi-Sys Labs
Thu, 30 Dec 2004 20:01:37 GMT

Mattias Sj?gre #2 / 2	VB image list handle isn't fully accessible in VC++ ActiveX thru COM call Quote: >I got the situation that the passed imagelist's handle from VB6 can't be >treated in ActiveX control. Pointer is valid, seems everything is Ok but an >attempt to assign the handle to internal ActiveX's imagelist do nothing, >meaning that the some wrapper class (i.e. CImageList) cannot recognize (to >treat) images which this handle really point on. There's a know issue that occurs on Windows XP, where imagelist handles from the VB6 ImageList control (in Mscomctl.ocx) don't work with the ImageList_ APIs (or wrapper classes such as CImageList). The easiest workaround is to switch to Comctl32.ocx. Mattias === Mattias Sj?gren (VB MVP) http://www.msjogren.net/dotnet/
Thu, 30 Dec 2004 23:21:15 GMT

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