XnView Software

It would be good if, for example, left button of mouse could be used for switching to next image, and right - to previous.
Or up/down buttons for switching between files, and left/right - between slides in current multipage file. And so on.
But I can't find any solution how to customize settings in such way. To my mind, in current implementation options are too restrictive. Please, give more freedom for advanced users.

Yes, having more options for key or mouse settings would be great.

What I would love to see in particular is "Zoom to 100%" of left mouse button, reverting back to the previous view when the button is released. This would allow to quickly zoom into parts of the image to check for sharptness/focus etc. when browsing through lots of images.