I am using the API_APPRUN class in my program, and am having a problem with it. On 2000 machines, it works without a hitch. On every single 98 machine we've tested it on, it hangs when I run this code:

ThisForm.RunApp.icCommandLine="PKZ -3 -- -+ -) -O MOD.ZIP _MDCPT.DBF"
ThisForm.RunApp.LaunchAppAndWait()

I've got around 20 pieces of code like this (each one unzipping a specific file from mod.zip), and on every "ThisForm.RunApp.LaunchAppAndWait()", it hangs until I hit Escape (that's programmed into the VCX).

Has anyone else had this problem with API_APPRUN and 98 machines? Am I missing something? I tried to contact the author, but to no avail.

This is the code that is in LaunchAppAndWait():

#DEFINE cnINFINITE 0xFFFFFFFF
#DEFINE cnHalfASecond 500 && milliseconds
#DEFINE cnTimedOut 258 && 0x0102
* We need some API calls, declare here
* GetCurrentProcess returns the pseudohandle of the current process (ie VFP instance)
DECLARE INTEGER GetCurrentProcess IN WIN32API AS GetCurrProc
* WaitForIdleInput waits until the application is instantiated and at it's event loop
DECLARE INTEGER WaitForInputIdle IN WIN32API AS WaitInpIdle ;
INTEGER nProcessHandle, ;
INTEGER nWaitForDuration
* WaitForSingleObject waits until the handle in parm 1 is signalled or the timeout period expires
DECLARE INTEGER WaitForSingleObject IN WIN32API AS WaitOnAppExit ;
INTEGER hProcessHandle, ;
INTEGER dwTimeOut
* Save the Process handle if any and the result of LaunchApp
* Fire the app and save the process handle
LOCAL uResult
uResult = 0
WITH This
.icErrorMessage = ''
IF .LaunchApp()
uResult = 1
* It's been launched; wait until we're idling along
=WaitInpIdle(GetCurrProc(),cnINFINITE)
* As long as the other process exists, wait for it
DO WHILE WaitOnAppExit(.inProcessHandle, cnHalfASecond) = cnTimedOut
* Give us an out in case the other app hangs - let
IF INKEY() = 27
* Still running but we aren't waiting - return a -1 as a warning
.icErrorMessage = 'Process started but user did not wait on termination'
uResult = 0
EXIT
ENDIF
ENDDO
ELSE
* Return 0 to indicate failure
uResult = 0
ENDIF
ENDWITH
RETURN (uResult = 1)

It's hanging inside that DO WHILE loop. Any API Guru's out there know why this happens? Thanks!