How do you check if a registry entry exists?

resista · 2nd October 2002, 01:21

I need to check if a registry entry exists! How do i do?

o_cee · 2nd October 2002, 01:41

From the help:

ReadRegStr user_var(output)
root_key
sub_key
name

Reads from the registry into the user variable $x. Valid values for root_key are listed under WriteRegStr. The error flag will be set and $x will be set to an empty string ("") if the string is not present. If the value is present, but is of type REG_DWORD, it will be read and converted to a string and the error flag will be set.

PHP Code:


			
ReadRegStr $0 HKLM SoftwareMicrosoft "Foobar"

StrCmp $0 "" stringempty stringnotempty



stringempty:

blahblahblah



stringnotempty:

yddayaddayadda

got it?

resista · 2nd October 2002, 05:03

The Help also says:

The error flag will be set and $x will be set to an empty string ("") if the string is not present.

2nd October 2002, 01:21	#1
resista Junior Member Join Date: Oct 2001 Location: Sweden Posts: 20	How do you check if a registry entry exists? I need to check if a registry entry exists! How do i do?

2nd October 2002, 01:41	#2
o_cee Junior Member Join Date: Aug 2002 Posts: 17	From the help: ReadRegStr user_var(output) root_key sub_key name Reads from the registry into the user variable $x. Valid values for root_key are listed under WriteRegStr. The error flag will be set and $x will be set to an empty string ("") if the string is not present. If the value is present, but is of type REG_DWORD, it will be read and converted to a string and the error flag will be set. PHP Code: `ReadRegStr $0 HKLM SoftwareMicrosoft "Foobar" StrCmp $0 "" stringempty stringnotempty stringempty: blahblahblah stringnotempty: yddayaddayadda` got it?

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2nd October 2002, 05:03	#3
resista Junior Member Join Date: Oct 2001 Location: Sweden Posts: 20	The Help also says: The error flag will be set and $x will be set to an empty string ("") if the string is not present.