ProgramListExitHook
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This hook chain is called every time a program-list call or initialization file call is invoked by an application. It is called before the call is run.
Syntax
ProgramListExitHook(hab, pProfileHookParams);
Parameters
- hab (HAB) - input
- Anchor block handle.
- pProfileHookParams (PRFHOOKPARMS) - input
- Profile hook parameters. These identify the call and give its parameters and return code. See PRFHOOKPARMS.
- rc (BOOL) - returns
- Process indicator.
- TRUE: The next hook in the chain is not called.
- FALSE: The next hook in the chain is called.
Returns
- rc (BOOL) - returns
- Process indicator.
- TRUE: The next hook in the chain is not called.
- FALSE: The next hook in the chain is called.
Remarks
This hook, together with its counterpart, ProgramListEntryHook, lets applications or system components:
- Implement the initialization file and program list partially, whilst retaining the existing implementation. For example, read-only requests could be satisfied from memory, rather than from disk.
- Redirect initialization-file operations on a particular group to an alternative (opened) profile. For example, in a multiple-user environment, a LAN program might choose to redirect profile groups that are hardware-dependent, rather than user-dependent, to the system-initialization file.
Example Code
#define INCL_FnDrEnPt #include <os2.h> HAB hab; /* Anchor block handle. */ PRFHOOKPARMS pProfileHookParams; /* Profile hook parameters. */ BOOL rc; /* Process indicator. */ rc = ProgramListExitHook(hab, pProfileHookParams);