TC activates left tab after WM_COPYDATA with CD command

[MVV]

When I send to TC window WM_COPYDATA message with CD command to set active paths in TC panels, TC always sets focus to left tab, even if right one was focused before. So, when I use "S" flag, path changes for right panel but focus jumps to left. May this be fixed?

[ghisler(Author)]

I'm not aware of this problem. Does anyone have a simple script (autohotkey or so) to test this?

[MVV]

Hm-m, strange, in my test project it works instable - sometimes focus lefts in right panel but sometimes it jumps to left panel...

[MVV]

I tested it and found a way to solve problem (explained here). I don't know is a bug but I think TC should not read more bytes than specified in cbData field of COPYDATASTRUCT - or it may cause even page faults in some cases. But if buffer have trailing zero byte, all work fine.

[ghisler(Author)]

Ah, thanks for your tests! Indeed TC needs this terminating 0 byte. The cbData field is essential, it tells Windows how much data it needs to copy from the source process to the target process. WM_COPYDATA is the only message I know of which can do this. When you give a number which is too small, Windows will only copy that number of bytes.