Using Win32 functions in Visual FoxPro Image Gallery
Handle and Object
..msdn
CloseHandle
DuplicateHandle
GetHandleInformation
SetHandleInformation
Code examples:
Comparing file times
Copying files as a transacted operation (Vista)
Creating a console window for Visual FoxPro application
Creating a file, then moving it to another destination
Creating a mailslot
Enumerating Processes -- Win9*
Enumerating Processes -- WinNT
How to check whether the system is 32-bit or 64-bit
How to convert a bitmap file to monochrome format (1 bpp)
How to enable the SE_SHUTDOWN_NAME privilege for the application
How to find when the application started
How to make application automatically close all documents it opened
How to prevent users from accessing the Windows Desktop and from switching to other applications
How to run FoxPro application under different user name (impersonating user)
How to set Creation Date/Time for a folder (WinNT)
How to Start a Process as Another User (NT/XP/2K)
How to suspend or hibernate your system
HOWTO: Use the Win32 API to Access File Dates and Times
Locking and unlocking file of a VFP table
Monitoring changes occurring within a directory
Moving shortcut to a specified position on the Windows Desktop
Obtaining I/O counts for the current process
Obtaining names and positions for shortcuts located on the Windows Desktop
Obtaining physical parameters for a drive: sectors, clusters, cylinders...
Passing data records between VFP applications via the Clipboard
Peer-to-peer LAN messenger built with Mailslot API functions
Reading and setting system access privileges for the current process
Reading and setting the priority class values for the current process and thread
Retrieving file information for the VFP executable running
Running MSDOS Shell as a child process with redirected input and output (smarter RUN command)
Setting the date and time that a file was created
Starting external program from VFP and waiting for its termination
Storing content of the Clipboard to a bitmap file
Storing screen shot of a form to bitmap file
Subclassing CommandButton control to create BackColor property
Terminating all running applications from a VFP program
Testing serial ports
Using File Mapping for enumerating files opened by Visual FoxPro
Using GetFileSize
Using InternetSetFilePointer when resuming interrupted download from the Internet
Using mailslots to send messages on the network
Using named pipes for interprocess communication
Using shared memory to exchange data between applications (processes)
Using the CreateFile
Using the DeleteFile
Using the Semaphore object
Using the Semaphore object to allow only one instance of VFP application running
Vertical Label control
CloseHandle
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The CloseHandle function closes an open object handle.

The CloseHandle function closes handles to the following objects:
        - Access token
        - Communications device
        - Console input
        - Console screen buffer
        - Event
        - File
        - File mapping
        - Job
        - Mailslot
        - Mutex (MutuallyExclusive)
        - Named pipe
        - Process
        - Semaphore
        - Socket
Code examples:
How to convert a bitmap file to monochrome format (1 bpp)
Setting the date and time that a file was created
How to set Creation Date/Time for a folder (WinNT)
Moving shortcut to a specified position on the Windows Desktop
HOWTO: Use the Win32 API to Access File Dates and Times
Obtaining names and positions for shortcuts located on the Windows Desktop
How to enable the SE_SHUTDOWN_NAME privilege for the application
Using shared memory to exchange data between applications (processes)
Peer-to-peer LAN messenger built with Mailslot API functions
How to find when the application started
Declaration:
BOOL CloseHandle(
  HANDLE hObject   // handle to object
);
FoxPro declaration:
DECLARE INTEGER CloseHandle IN kernel32;
    INTEGER hObject
Parameters:
hObject
[in/out] Handle to an open object
Return value:
If the function succeeds, the return value is nonzero
Word Index links for the CloseHandle :
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Created: 2001-07-12 12:00:00
Modified: 2001-11-26 16:01:18
Visited in last 7 days: 83
User Contributed Notes:
A.M. | 2001-10-01 09:33:30
Webopedia: In computer programming, a mutex is a program object that allows multiple program threads to share the same resource, such as file access, but not simultaneously.

When a program is started, a mutex is created with a unique name. After this stage, any thread that needs the resource must lock the mutex from other threads while it is using the resource. The mutex is set to unlock when the data is no longer needed or the routine is finished.

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