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deletereg_remove_a_value_or_key_from_windows_registry_.htm
Navigation:  Language Reference > 13 - Built-in Functions >====== DELETEREG (remove a value or key from Windows registry) ====== Previous pageReturn to chapter overviewNext page

DELETEREG (LONG root, STRING keyname [.STRING valuename])

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DELETEREG Deletes a named entry from the system registry.
root The root section of the registry from which to delete the value. Valid values for this are defined in equates.clw and are as follows:
REG_CLASSES_ROOT
REG_CURRENT_USER
REG_LOCAL_MACHINE
REG_USERS
REG_PERFORMANCE_DATA
REG_CURRENT_CONFIG
REG_DYN_DATA
keyname The name of the key to delete, or the key to delete from.
valuename The name of the value to delete. If omitted the whole key is deleted.

Vista and Clarion Built-in Registry Functions

On Vista, a (non-elevated) app can READ the registry key HKLM (local machine) with no problems, but as far as writing to the Registry it needs to use HKCU (current user).

If you code sign your executable and run with elevated privileges then you can write to HKLM

Example:

   PROGRAM

   MAP

   END

 

   INCLUDE('EQUATES')

CurrentPath CSTRING(100)

ColorScheme CSTRING(100)

 

   CODE

  DELETEREG(REG_LOCAL_MACHINE,'SOFTWARE\SoftVelocity\Clarion7','root')

   !remove the root directory entry of the Clarion 6 install

  DELETEREG(REG_CURRENT_USER,'Control Panel\Current')

   !since a specific value is not specified,

   !the entire “Current” key will be removed

See Also:

GETREG, PUTREG

deletereg_remove_a_value_or_key_from_windows_registry_.htm.txt · Last modified: 2021/04/15 15:57 (external edit)