DLL,MessageBeep
Notice that you type the utility name, RunDLL32, followed by the name of the DLL, User32.DLL,
and the name of the function, MessageBeep(). Note that the capitalization of the function you call
is important; MessageBeep isn??™t the same as messagebeep.
You have many resources for learning how to use this particular command line feature. The best
place to begin learning is the registry. Simply open the RegEdit utility and search for RunDLL32
entries by selecting the Edit Find command and typing RunDLL32 in the Find What field.
Figure 1.9 shows a typical entry. In this case, the example shows how to install a new screen saver
using the RunDLL32 utility (a handy thing to know since there isn??™t any way to do it from the user
interface).
Notice that, in this case, you pass the name of the screen saver file to the function. Replace any
variable entries, %1 in this case, with the actual filename you want to use when working at the command
line. You??™ll find a wealth of RunDLL32 tips online, including suggested commands. Make
sure you always understand what a command will do and verify its functionality before you actually
use it.
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