plug-in can not respont to "WM_DROPFILES" message

[_fiona_guo_]

When drop a file to the plug-in, photoshop will open the file, and plug-in will not respont the message.
Can I stop photoshop open the file and get the plug-in Dialog to accept the message?

Thank you.

[Chris Cox]

No.
Photoshop will see and respond to the message, and open your file format plugin. Your plugin should never see that message.

[_fiona_guo_]

Thank you very much.
But the "Picture package" plugin which is belong Photoshop itself, could respond to the message. Is it different from our plugin? Is it controlled by Photoshop?

[Tom Ruark]

The picture package puts Photoshop into a modal state. That is why it can get the messages. You need to call your plug-in to get Photoshop into that state (modal). Picture package is an automation plug-in.