Adjust Win7 taskbar preview window size

Step 1: Open the Registry Editor (Start, Run …, enter regedit and enter; you can also press win + R, enter regedit and enter; you can also open Windows 7 Optimizer, click on System Toolbox, open the registry editor
Step 2: Find HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerTaskband<3> in the left directory. Step 3: Right-click the blank space on the right side and select New DWORD (32-bit) value, name is MinThumbSizePx
Step 4: Double-click New The MinThumbSizePx key value, then enter the preview window size you want to adjust in the "Value Data" field. The default is around 200, you can adjust to 300, and the right side of the "base" ”, select decimal. Click OK to close the registry.
Step 5: Log out the user, log in again to see the preview window becomes bigger! (You can also end the explorer.exe process, and then open the explorer process)
Change the method back: Delete MinThumbSizePx!