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In previous versions and also in the end user version you have the possibility to double click on the empty control to open a pdf.
The text explaining this is also visible. How do I activate this?
The control has a text property but is has the next text to it.
The initialized or viewing event fire to late for me. Is it possible to catch the double click and start the open dialog myself?
I have to do some initialization myself and have already an open file method..
I see, well, there is a way to detect this. You will need to implement a custom event target for the DocumentViewsArea: https://sdkhelp.pdf-xchange.com/vie ... tViewsArea
Then you will need to listen to the double click event and act accordingly. For example show your dialog and open the document with it. Don't forget to put the Handled flag as true - this will mean that you have handled this event and all other listeners (like default ones) won't do anything.
Here's the sample I wrote some time ago - check it out: https://gist.github.com/Polaringu/648a34daff6bd284a773
You will need to implement a CustomEventTarget class as described in the sample and listen to the WM_LBUTTONDBLCLK 0x0203 event code (that you can look in the MSDN).