Form1
Form1
Form1
List1
Command1
Create array
Command2
Load list box
Command3
Rewrite array
Command4
Clear list box
Command5
Clear array
Command6
Command0
Create a test file on disk C:
hread
hFile
memAddrI
dwBytes
hwrite
lclose
llseek:
lOffset
iOrigin
OpenFile
lpFileName
lpReOpenBuff
OFSTRUCT
wStyle
OF_READ
OF_WRITEo
	OF_CREATEA
GlobalAlloc
wFlags
GlobalFree}
hMemW
GlobalLock
GlobalUnlock
MemoryReada
dwOffset
lpvBuf
dwcb$
MemoryWrite
Form_Clickp
g_FMmain
g_frecs
f_mHndl
CreateHuge;
size1
lpAddrM
inBytes:
lpAddr1(
FillAvListBox
SendMessage$
ControlhWnd
ListAvFonts
LB_RESETCONTENTB
mnuType
mSel\
GlobalHandleToSel
rBytes
TrueType
Delete
fntNm
fullnameV
LB_ADDSTRING
LB_SETITEMDATAQ
g_FType
List1
Command4_Click
Command1_Click
Command2_Click
Command3_Click
x127O
LenRec
frecs
Command6_Click
Command5_Click
Command7_Click
Command0_Click
LOCATEZ
f_Ofl
f_FMmainz
f_FRecs
f_fType
f_RecMmain
	f_Recrecs
f_Rec
	f_RecType
f_File
	f_NbrRecs
FillListBox
RecLen
f_mSel
f_LenRec
f_RecLen
wParam
lParam
GetFocus
WM_USER
GMEM_MOVEABLE
GMEM_ZEROINIT
	Form_Load
Form2
_hread
kernel
_lclose
Kernel
_llseek
Kernel
Kernel
  OpenFile() Flags
Kernel)
KernelA
KernelA
KernelA
Toolhelp.dll:
Toolhelp.dll}
Toolhelp.dll}
Open file structure record
Name of file containing sample records
Number of records in sample file
Memory handle to global memory
Sample record 
Memory selectorc
Length of sample recordg
CreateHuge
--- creates huge array of records from sample file. The records are in a 
 type structure defined as "f_RecType". 
Sample.dat
--- open the data file for reading
--- get the size of the file
--- determine how many records are in the file
--- reset the file pointer to the start of the file 
--- create the global memory objecte
--- make sure enough memory is available
Insufficient memory to allocate array"
--- get the address of the memory object
--- read the data file into the memory objecte
--- close the file
--- unlock the memory object
Command1_Click
Command2_Click
Command6_Click
Command5_Click
Command0_Click
Write a series of records to a disk file. We'll read this file
into memory later.
Sample.dat
FillListBox
--- get the array memory object selector
 this only needs to be done once in any form or routine.
 Note that memory is NOT locked. It doesn't need to be in
 in protected mode so the selector is valid even if the memory
 object gets moved.  As this routine requires the Win 3.1 API
 calls, the app will always be running in protected mode. 
--- read records from array (f_NbrRecs is total # of records)=
--- read a record from array into f_Rec record structure
--- add record to listbox
Command3_Click
Write records to memory in reverse order
Command4_Click