Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Winsock: sending email messages (SMTP, port 25)
Custom GDI+ class
Obtaining names and positions for shortcuts located on the Windows Desktop
GDI+: Implementing image scrolling with inertia
Displaying icons in the system tray (VFP9)
How to print FoxPro form
Storing content of the Clipboard to a bitmap file
Printing Image File, programmatically set print page orientation to landscape
Storing screen shot of a form to bitmap file
How to put a horizontal text scrolling on the form (a news line, marquee)
Subclassing CommandButton control to create BackColor property
Vertical Label control
Browsing Windows Known Folders (Special Folders)
How to change display settings: screen resolution, screen refresh rate
How to make a VFP form fading out when released (GDI version)
Displaying dimmed window behind VFP top-level form
Windows Shell Icons displayed and exported to ICO files (Vista)
Writing entries to custom Event Log
Capturing keyboard activity of another application with the Raw Input API (VFP9)
Custom FTP Class for Visual FoxPro application
Detecting changes in connections to removable drives (VFP9)
How to display Windows On-Screen Keyboard
Pocket PC: custom RAPI class for operating with files and folders on mobile device
Enumerating devices installed on the local machine
Disabling mouse and keyboard input for the main VFP window (with the app still running)

User rating: 0/10 (0 votes)
Rate this code sample:
  • ~
More code examples    Listed functions    Add comment     W32 Constants      Translate this page Printer friendly version of this code sample

? BlockInput (1)
? "*** Input blocked"

FOR ii=1 TO 10
    DO dataproc

? BlockInput (0)
? "*** Input unblocked"

PROCEDURE  dataproc
* it is just an emulation of a time-consuming procedure
    LOCAL ii
    WAIT WINDOW NOWAIT "Creating cursor..."
    CREATE CURSOR cs (id N(6), dt D)
    FOR ii=1 TO 10000
        INSERT INTO cs VALUES (ii, date()-ii)
    ? Chr(9) + "- cursor created at " + TTOC (datetime())
    USE IN cs

User rating: 0/10 (0 votes)
Rate this code sample:
  • ~
509 bytes  
Created: 2001-08-02 12:00:00  
Modified: 2008-10-03 15:25:57  
Visits in 7 days: 56  
Listed functions:
Printer friendly API declarations
My comment:
WinNT4, User32.dll of apr-99: Cannot find entry point BlockInput in the DLL.

During the cycle of N times running the DATAPROC, the user input is practically blocked. You can not even access the Task Manager.

Though the good old CTRL+ALT+DEL still can break through. It is quite helpful in case you have a run-time error within this cycle. Otherwise you could not be able to get out.

Note that no key presses reach the keyboard buffer during the blocking. And this is not the delay like the Sleep function creates.
Word Index links for this example:
Translate this page:
  Spanish    Portuguese    German    French    Italian offers instant, free translations of text or web pages.
User Contributed Notes:
There are no notes on this subject.

Copyright 2001-2016 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 (5.6.33), the Open Source standard SQL database, AceHTML Freeware Version 4, freeware HTML Editor of choice.   Hosted by Korax Online Inc.
Last Topics Visited (
21 sec.Example: 'How to retrieve the number of print jobs queued for the printer'
47 sec.Example: 'GDI+: sending image of FoxPro form to printer'
1.75 min.Function: 'TaskDialog'
Advertise here!