Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Adding and deleting Scheduled Tasks using NetScheduleJob API functions
How to change display settings: screen resolution, screen refresh rate
Enumerating printer drivers installed
Capturing keyboard activity of another application with the Raw Input API (VFP9)
Using Video Capture: displaying on FoxPro form frames and previewing video obtained from a digital camera
GDI+: copying to the Clipboard (a) image of active FoxPro window/form, (b) image file
Custom GDI+ class
How to retrieve information about a cache entry (Internet Explorer)
Enumerating raw input devices attached to the system (keyboard, mouse, human interface device)
How to display Windows On-Screen Keyboard
How to convert a bitmap file to monochrome format (1 bpp)
Windows Shell Icons displayed and exported to ICO files (Vista)
Custom HttpRequest class (WinINet)
Custom HttpRequest class (WinHTTP)
Using EnumPrinters function to enumerate locally installed printers
Using WM_COPYDATA for interprocess communication (VFP9)
How to activate Windows Calculator
How to print FoxPro form
How to create MD-5 and SHA-1 hash values from a string
Using FoxTray ActiveX control: System Tray Icon and menu attached to VFP form
How to detect if additional monitor is connected and active
How to set Creation Date/Time for a folder (WinNT)
GetFileOwner - Get the owner of an NTFS file
Mapping and disconnecting network drives
How to display Windows On-Screen Keyboard

User rating: 7.5/10 (4 votes)
Rate this code sample:
  • ~
More code examples    Listed functions    Add comment     W32 Constants      Translate this page Printer friendly version of this code sample
Versions:
click to open
Before you begin:

For data entry, instead of relying on the physical keyboard, user may choose to use Windows On-Screen Keyboard that gives access to all standard keys.

On-Screen Keyboard executable file, osk.exe, resides in System32 directory. Note that on 64-bit systems this file cannot be launched from 32-bit process. "File System Redirector" article on MSDN explains why:
32-bit applications can access the native system directory by substituting %windir%\Sysnative for %windir%\System32. WOW64 recognizes Sysnative as a special alias used to indicate that the file system should not redirect the access.
#DEFINE MAX_PATH 260
#DEFINE OSK_EXE "osk.exe"

DO declare
= ShellExecute(0, "open", GetOskPath(), "", "", 1)
* end of main

FUNCTION GetOskPath() As String
    LOCAL cPath

    cPath = PathCombine(;
        GETENV("windir"),;
        "sysnative",;
        OSK_EXE )

    IF FILE(cPath)
        RETURN m.cPath
    ENDIF

    cPath = PathCombine(;
        GetSysDir(),;
        OSK_EXE )

RETURN IIF(FILE(cPath), m.cPath, OSK_EXE)

FUNCTION GetSysDir
    LOCAL cBuffer, nBufsize
    cBuffer=REPLICATE(CHR(0), MAX_PATH)
    nBufsize= GetSystemDirectory(@cBuffer, LEN(cBuffer)) 
RETURN SUBSTR(cBuffer, 1, nBufsize)

FUNCTION PathCombine(p1, p2, p3, p4, p5) As String
    LOCAL cBuffer, cPath1, cPath2, nIndex, nCount
    nCount = PCOUNT()

    DO CASE
    CASE nCount = 0
        RETURN ""
    CASE nCount = 1
        RETURN p1
    ENDCASE

    cBuffer = m.p1

    FOR nIndex=2 TO nCount
        cPath1 = STRTRAN(m.cBuffer, CHR(0), "")
        cPath2 = EVALUATE("m.p" + TRANSFORM(m.nIndex))
        cBuffer = REPLICATE(CHR(0), MAX_PATH)
        PathCombineApi(@cBuffer, cPath1, cPath2)
    NEXT
RETURN STRTRAN(m.cBuffer, CHR(0), "")

PROCEDURE declare
    DECLARE INTEGER GetSystemDirectory IN kernel32;
        STRING @lpBuffer, INTEGER nSize

    DECLARE INTEGER ShellExecute IN shell32;
        INTEGER hWindow, STRING lpOperation,;
        STRING lpFile, STRING lpParameters,;
        STRING lpDirectory, INTEGER nShowCmd

    DECLARE INTEGER PathCombine IN shlwapi;
    AS PathCombineApi;
        STRING @lpszDest, STRING lpszDir,;
        STRING lpszFile

User rating: 7.5/10 (4 votes)
Rate this code sample:
  • ~
1457 bytes  
Created: 2012-02-18 22:46:23  
Modified: 2013-08-14 11:46:10  
Visits in 7 days: 150  
Listed functions:
GetSystemDirectory
PathCombine
ShellExecute
Printer friendly API declarations
My comment:

On-Screen Keyboard class name is "OSKMainClass". With this knowledge, a VFP application can detect whether the On-Screen Keyboard window is visible -- by calling FindWindow. It can also move and hide the keyboard -- by calling SetWindowPos or similar API function.
Word Index links for this example:
Translate this page:
  Spanish    Portuguese    German    French    Italian  
FreeTranslation.com offers instant, free translations of text or web pages.
User Contributed Notes:
There are no notes on this subject.


Copyright 2001-2014 News2News, Inc. Before reproducing or distributing any data from this site please ask for an approval from its owner. Unless otherwise specified, this page is for your personal and non-commercial use. The information on this page is presented AS IS, meaning that you may use it at your own risk. Microsoft Visual FoxPro and Windows are trade marks of Microsoft Corp. All other trademarks are the property of their respective owners. 

Privacy policy
Credits: PHP (4.4.9), an HTML-embedded scripting language, MySQL (5.1.68), the Open Source standard SQL database, AceHTML Freeware Version 4, freeware HTML Editor of choice.   Hosted by Korax Online Inc.
Last Topics Visited (54.197.111.87)
7.65 min.Function: 'JetRetrieveColumn'
8.72 min.Function: 'CryptDestroyKey'
5 day(s)Function: 'CryptProtectData'
10 day(s)Function: 'WSACloseEvent'
Function group: 'Windows Sockets 2 (Winsock)'
 Function: 'GetMenuItemCount'
 Example: 'Enhanced GetFont dialog'
 
Function group: 'Shell Functions'
 
Function group: 'Remote Access Service (RAS)'
 Function: 'UpdateResource'
Google
Advertise here!