SpeccyView 1.1 (16.01.2010)
By Arda "ref" Erdikmen

This program is capable of viewing Zx Spectrum SCR graphics files, both ULA64 (64 colour) and Standard (16 colour) mode.

This program developed to aid development of Windows Vista/7 SCR thumbnail provider, and it's simple and plain, so I thought it might prove useful to someone and released it "as is". 

Usage:
Just drag-drop zx spectrum screen files into SpeccyView window.
If you want to create a slideshow, you can drag multiple files into program. 
If you drag only one item to speccyview, program scans the source directory to find other scr files. So you can use prev&next button to view others.

To save a SCR file as BMP/JPG/GIF/PNG use save button. Don't forget to put proper extension to the filename, as it will not correct extension automatically.

If something goes wrong, hit 2X button. It will reset the display to default %200 zoom.

As you can see there is no "File open" button. Program only supports commandline input or drag-drop. Also, you can set Speccyview as Default application for SCR files. To do this, open start menu, select "default programs", select "associate a file type with a program", scroll to ".scr",select it and click "change program" and browse to "Speccyview.exe".

After that you can double click any scr file to launch speccyview.

Version history:

V1.1 - Mainly bugfixes, added some error traps and save feature.
V1.0 - initial relase. No error checking, but it runs. 