Do you remember Rafael Rivera this man? It was he who first disclosed details about Windows 7 new features: Windows XP mode. Now, he brings a little trick: Change the visual effects of the text and buttons on the login interface to match the different types of login backgrounds.
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The implementation method is simple, modify the registry slightly, the steps are as follows:
Click on the Start menu, enter REGEDTI in "Search programs and Files" and return to start Registry Editor;
Positioning to: Hkey_local_machine\software\microsoft\windows\currentversion\authentication\logonui;
On the LogonUI right, create a new DWORD value, named Buttonset;
Then double-click Buttonset to fill in "Value data" with any number from 0 to 2, and the default value is 0.
The numbers have the following meanings:
0-Light text shadow, basic opaque button (Windows default state)
1-Dark Text shadow, Semitransparent button (for light-colored login background)
2-No text shadow, opaque button (for dark login background)
You asked how to change the login background image? Here's a gadget that specifically changes the Windows 7 login background to help you achieve it quickly.