APL+Win Training Pack 14

The 32-bit Windows API

Download APL+Win Training Pack 14 (494 K)

This Training Pack is the last one of your Subscription. It contains a tutorial on how to exploit the power of the 32-bit Windows API directly from APL+Win through the use of the ŒWCALL system function.

This Tranining Pack includes one chapter: Chapter 26 - The 32-bit Windows API.

After introducing the 32-bit Windows API and its APL+Win interface, this Chapter shows simple examples demonstrating how to:

use API functions
pass arguments from APL+Win to Windows
use Windows constants
use Windows structures and pass them as arguments
use Windows callback functions and filters
send low level messages to APL+Win controls
mix high level APL+Win objects and low level API calls

These topics are exposed through many examples involving the following low level calls:

GetWindowsDirectory
GetSystemMetrics
GetClientRect
GlobalMemoryStatus
GetSystemTime
GetLocalTime
FileTimeToSystemTime
GetFileTIme
CreateFile
CloseHandle
FileTimeToLocalFileTIme
GetVersion
GetLogicalDrives
GetLogicalDriveStrings
GetLastError
FindFirstFile
FindClose
GetTickCount
GetSystemDefaultLangID
VerLanguageName
FindWindow
MoveWindow
MessageBeep
GetEnvironmentVariable
HideCaret
EnumWindows
GetWindowText
GetClassName
GetWindowRect
GetClassName
GetWindowLong
SendMessage
Sending a CB_ADDSTRING message
Sending a CB_SHOWDROPDOWN message
Sending a CB_GETITEMDATA message
Sending a CB_SETITEMDATA message
Sending a CB_SHOWDROPDOWN message

In order to help you find the right definitions for the 32-bit Windows calls which are missing from the APLWADF.INI file, I have included 2 files: the API16.TXT and API32.TXT 32-bit API declaration files for Visual Basic.

The API32.TXT file should in particular prove invaluable for those who are looking for constant values.

Pack 14 Content

DISK14.DOC	A 64 pages Winword document containing Chapter 26 of the APL+Win Training.
API32.W3	A workspace with several Win32 API utilities
API32.TXT	A collection of 32-bit API declarations
API16.TXT	A collection of 32-bit API declarations
README14.TXT	The read me file