Use the registry to easily change the clarity of the Windows 7 preview window

        HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerTaskband" branch; then in the blank area on the right, select "New /DWORD (32-bit) value", follow the prompts to create a new DWORD value named "MinThumbSizePx"; then right-click the newly created DWORD value, select "Modify "Open the "Edit DWord (32-bit) value" dialog box; finally check the "Decimal" radio box in the dialog box and enter a specific value in the text box (recommended to enter 450), click the "OK" button can.

after completion of the operation, then press "Ctrl + Alt + Del" shortcut to bring up the "Windows task Manager" window, then click the menu "file /New task (run)" command Follow the prompts to end and reload the explorer.exe process. This way, when the mouse is moved to the icon on the taskbar, you can clearly preview the contents of the opened file or program. Using the registry is It is not easy to change the clarity of the Windows 7 preview window. Friends who have this need may wish to give it a try.