Solve windows7 can not lock the taskbar program and remove the shortcut arrow problem

After the common software is attached to the taskbar, the small arrow is cancelled again. When there is another program to be attached to the taskbar, it is very unpleasant. Hanging around on the Internet today, I saw a method that didn't attract my attention: replace the small arrow with a transparent image as follows: Open Notepad and type the following: Windows
Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\\lnkfile]"IsShortcut"=""

[HKEY_CLASSES_ROOT\\piffile]"IsShortcut"=""

[HKEY_CURRENT_USER\\Software\\Microsoft\\Windows \\CurrentVersion\\Explorer\\Shell Icons]"29"="C:\\\\\\\\Windows\\\\\\\\System32\\\\\\\\shell32.dll,50"

[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\ Windows\\CurrentVersion\\Explorer\\Shell Icons]"29"="C:\\\\\\\\Windows\\\\\\\\System32\\\\\\\\shell32.dll,50"

Then save as a .reg file , double-click to run the last logout and then log in or restart computer
, it is OK, the shortcut is not Small arrow, the program can also be attached to the taskbar