Max Zoom

[HomerWu]

Hello,

We know that the max zoom level of the pdfCtl is 6400,and the pdfCtl has a readonly property called CanZoomIn,but i want to set the value of max zoom to 400,when the zoom level is 400,user can not zoom in.do you have any way to set its max zoom level ? or do you have any way to set the property 'CanZoomIn' to false when the zoom level is 400?

[Sasha - Tracker Dev Team]

Hello HomerWu,

Well, you can monitor the e.pagesView.layoutChanged event:
https://sdkhelp.pdf-xchange.com/vie ... outChanged
Then cast the interface to the IPXV_PagesLayoutChangedEvent and get the ChangesFlags from it. Then see whether the zoom was modified - the flags should contain the PXV_PagesLayoutChange_NewZoom flag.
Then check the current zoom - if it's greater then 400% then use this https://sdkhelp.pdf-xchange.com/vie ... ol_SetZoom method to set it back to 400%.

Cheers,
Alex

[HomerWu]

Hello Sasha,

Thank you for your reply.how do you know i'm using the method you said?
Yes,i monitoed the event 'e.pagesView.layoutChanged' and when the zoom level is greater than 400%,i set it to 400%(SetZoom(PXV_ZoomMode.PXV_ZoomMode_Percent,400)),but i found that the page has a little location move(just have a look at the attach)

Anyway,thanks for your reply and if you have any other way,please let me know.

[Sasha - Tracker Dev Team]

Hello HomerWu,

I see, then try using this event here - it will be fired before the zoom change, so this should fix this problem:
e.pagesView.beginLayoutChanging

Cheers,
Alex