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VXM Driver Documentation - PowerBasic - Examples
All functions assume you followed directions in the "How To Add To Your Project"
Examples
Code to create dialog and controls
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' Declares
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#COMPILE EXE
#INCLUDE "WIN32API.INC"
#INCLUDE "VXMDRIVER.INC"
'----------------------------------------------------------------------
GLOBAL hDlg AS LONG
%CmdMoveMotor = %WM_USER + 1
%CmdMoveMotorWait = %WM_USER + 2
%TxtMotorPosition = %WM_USER + 3
'----------------------------------------------------------------------
DECLARE CALLBACK FUNCTION DlgProc() AS LONG
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' Program entrance
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FUNCTION WINMAIN (BYVAL hInst AS LONG, BYVAL hPrevInstance AS LONG, _
lpszCmdLine AS ASCIIZ PTR, BYVAL nCmdShow AS LONG) AS LONG
LOCAL hCtl AS LONG
DIALOG NEW 0, "VXM Driver Examples", , , 187, 53, _
%WS_VISIBLE OR %WS_CLIPSIBLINGS OR %WS_CLIPCHILDREN OR %WS_CAPTION OR _
%WS_SYSMENU OR %WS_THICKFRAME OR %WS_MINIMIZEBOX OR _
%WS_MAXIMIZEBOX, _
%WS_EX_APPWINDOW OR %WS_EX_CONTROLPARENT OR %WS_EX_WINDOWEDGE TO hDlg
'For icon from resource, instead use something like, LoadIcon(hInst, "APPICON")
DIALOG SEND hDlg, %WM_SETICON, %ICON_SMALL, LoadIcon(%NULL, BYVAL %IDI_APPLICATION)
DIALOG SEND hDlg, %WM_SETICON, %ICON_BIG, LoadIcon(%NULL, BYVAL %IDI_APPLICATION)
CONTROL ADD BUTTON, hDlg, %CmdMoveMotor, "Move Motor", 5, 5, 50, 20,%BS_MULTILINE
CONTROL ADD BUTTON, hDlg, %CmdMoveMotorWait, "Move Motor and Wait for Program Finish", 60, 5, 125, 20, %BS_MULTILINE
CONTROL ADD LABEL, hDlg, -1, "Motor Position", 5, 30, 175, 10
CONTROL ADD TEXTBOX, hDlg, %TxtMotorPosition, "", 5, 40, 175, 10
CONTROL DISABLE hDlg, %TxtMotorPosition
LoadDriver "VxmDriver.dll"
DIALOG SHOW MODAL hDlg, CALL DlgProc
' DIALOG SHOW MODeLess hDlg, CALL DlgProc
END FUNCTION
Code for Dialog Callbacks (Windows events)
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' Main Dialog procedure
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CALLBACK FUNCTION DlgProc() AS LONG
DIM hWnd AS LONG
DIM ReportToWindow AS LONG
SELECT CASE CBMSG
CASE %WM_CREATE
'First message - a good place to initiate things, declare variables,
'create controls and read/set settings from a file, etc.
'-------------------------------------------------------------------
CASE %WM_COMMAND
'Messages from controls and menu items are handled here.
'-------------------------------------------------------
SELECT CASE CBCTL
Minimal Code WITHOUT Wait
CASE %CmdMoveMotor
hWnd = GetDesktopWindow()
DriverTerminalShowState %True, hWnd
PortOpen 8, 9600
PortSendCommands "F,C,I1M400,I1M-400,R"
PortClose
DriverTerminalShowState 0, hWnd
Minimal Code WITH Wait
CASE %CmdMoveMotorWait
hWnd = GetDesktopWindow()
DriverTerminalShowState 1, hWnd
PortOpen 8, 9600
PortSendCommands "F,C,I1M400,I1M-400,R"
'*** Use below line if just wanting to wait for VXM program to end
' PortWaitForChar "^", 0
'*** Use below line if wanting to wait for VXM program to end, and report back motor positions while waiting
PortWaitForCharWithMotorPosition("^", 1, GetDlgItem(hDlg, %TxtMotorPosition), 0)
PortClose
DriverTerminalShowState 0, hWnd
CASE %TxtMotorPosition
SELECT CASE CBCTLMSG
CASE %EN_CHANGE
InvalidateRect GetDlgItem(hDlg, %TxtMotorPosition), BYVAL %NULL, 0
UpdateWindow GetDlgItem(hDlg, %TxtMotorPosition)
END SELECT
END SELECT
EXIT FUNCTION 'Exit so function not called twice
CASE %WM_DESTROY
'is sent when program ends - a good place to delete created
'objects and store settings in file for next run, etc.
'-------------------------------------------------------------
ReleaseDriver
END SELECT
END FUNCTION
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