RegDBDeleteValue

InstallShield 2024 » InstallScript Language Reference

Project: For InstallScript MSI and Basic MSI projects, it is recommended that you use the Registry view in InstallShield instead of creating registry keys and values through InstallScript code. Handling all of your registry changes in this way allows for a clean uninstallation through the Windows Installer service.

The RegDBDeleteValue function deletes a value from a specific key in the registry. InstallShield assumes that the key specified in szSubKey is a subkey of HKEY_CLASSES_ROOT. You must use RegDBSetDefaultRoot to specify another root key.

RegDBDeleteKey is a general registry-related function, designed to work with all registry keys, including those handled by the special registry-related functions. For more information on special registry-related functions, see Special Registry-Related Functions.

Note:This function supports the 64-bit parts of the registry by using the REGDB_OPTION_WOW64_64KEY option. For more information, see REGDB_OPTIONS.

Syntax

RegDBDeleteValue ( szSubKey, szValue );

Parameters

RegDBDeleteValue Parameters
Parameter	Description
szSubKey	Specifies the name of the registry key that contains the value name to delete. Separate different levels in the subkey with a double backslash (\\).
szValue	Specifies the name of the value you want to delete.

Return Values

RegDBDeleteValue Return Values
Return Value	Description
0	Indicates that the function successfully deleted the value.
< 0	Indicates that the function was unable to delete the value.

Additional Information

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By default, any text that is surrounded by angle brackets—for example, "<my registry entry text>"—in this function’s string arguments is interpreted as a text substitution and is processed accordingly. To disable text substitution processing for the string arguments of registry functions, call Disable with the REGISTRYFUNCTIONS_USETEXTSUBS argument.

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RegDBDeleteValue does not write anything to the uninstall log file; thus, calling this function does not have any effect how the application is uninstalled.