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
Using Video Capture: displaying on FoxPro form frames and previewing video obtained from a digital camera
Custom GDI+ class
Placing a button on the VFP form as a new child window
GDI+: reading and writing metadata in JPEG and TIFF files
Enumerating devices installed on the local machine
Building a tree of subdirectories for a given path using FindFile functions
Winsock: sending email messages (SMTP, port 25)
How to convert a bitmap file to monochrome format (1 bpp)
How to copy the image of a form to the Clipboard using Bitmap API functions
Saving local machine ODBC Registry Entries to XML file
Using FoxTray ActiveX control: System Tray Icon and menu attached to VFP form
GDI+: Storing content of the Clipboard to a bitmap file
Class library providing access to the System Registry
Printing Image File, programmatically set print page orientation to landscape
Storing content of the Clipboard to a bitmap file
Copying strings through the global memory block
How to detect if additional monitor is connected and active
Confining Windows calculator inside the VFP main window
Custom HttpRequest class (WinHTTP)
How to put a horizontal text scrolling on the form (a news line, marquee)
Capturing keyboard activity of another application with the Raw Input API (VFP9)
Configuring DEVMODE structure for a printer
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.
private static void StartOnScreenKeyboard()
{
    const string OskExe = "osk.exe";
    var winDir = Environment.GetEnvironmentVariable("WINDIR");

    if (string.IsNullOrEmpty(winDir))
    {
        return;
    }

    var oskPath = Path.Combine(
        Path.Combine(winDir, "sysnative"), OskExe);

    if (!File.Exists(oskPath))
    {
        oskPath = Path.Combine(
            Path.Combine(winDir, "system32"), 
            OskExe);
    }

    if (!File.Exists(oskPath))
    {
        return;
    }

    Process.Start(oskPath);
}

User rating: 7.5/10 (4 votes)
Rate this code sample:
  • ~
558 bytes  
Created: 2012-02-18 22:46:23  
Modified: 2013-08-14 11:46:10  
Visits in 7 days: 19  
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 2001-2015 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 (54.83.224.15)
13 sec.Examples
Page 3
33 sec.Function: 'WNetAddConnection'
Function group: 'Windows Networking'
1.65 min.Function: 'FtpGetFileSize'
Google
Advertise here!