Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Custom GDI+ class
Obtaining names and positions for shortcuts located on the Windows Desktop
Printing Image File, programmatically set print page orientation to landscape
GDI+: Implementing image scrolling with inertia
How to change display settings: screen resolution, screen refresh rate
Displaying dimmed window behind VFP top-level form
How to load a user profile
Browsing Windows Known Folders (Special Folders)
Displaying icons in the system tray (VFP9)
Monitoring clipboard content changes (VFP9)
Moving shortcut to a specified position on the Windows Desktop
GDI+ fun: roach-infested desktop
Splash Screen for the VFP application
Storing content of the Clipboard to a bitmap file
Custom FTP Class for Visual FoxPro application
GDI+: Creating thumbnails to preview images in a directory
Detecting changes in connections to removable drives (VFP9)
How to put a horizontal text scrolling on the form (a news line, marquee)
Placing On-screen Alert on top of all windows
Pocket PC: custom RAPI class for operating with files and folders on mobile device
Compressing and decompressing files with Windows API Runtime Library routines
How to put a vertical text scrolling on the form (a movie cast)
Vertical Label control
GDI+: Scrolling through large image using the mouse
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
DECLARE INTEGER BlockInput IN user32 INTEGER fBlockIt

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

FOR ii=1 TO 10
    DO dataproc
ENDFOR

? 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)
    ENDFOR
    WAIT CLEAR
    ? Chr(9) + "- cursor created at " + TTOC (datetime())
    USE IN cs
RETURN

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: 69  
Listed functions:
BlockInput
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  
FreeTranslation.com offers instant, free translations of text or web pages.
User Contributed Notes:
There are no notes on this subject.


Copyright 2001-2017 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 (5.6.37), the Open Source standard SQL database, AceHTML Freeware Version 4, freeware HTML Editor of choice.   Hosted by Korax Online Inc.
Last Topics Visited (54.166.203.76)
3 sec.Example: 'Opening the Page Setup dialog box to specify the attributes of a printed page'
6 sec.Function: 'ChooseFont'
7 sec.Function: 'GetTextExtentPoint32'
9 sec.Function: 'GetDefaultPrinter'
Function group: 'Printing and Print Spooler'
10 sec.Function: 'SCardEstablishContext'
12 sec.Function: 'TaskDialogIndirect'
13 sec.Function: 'GdipGetDpiX'
15 sec.Function: 'GetTextFace'
17 sec.Example: 'Enumerating MIDI output devices'
19 sec.Function: 'mmioCreateChunk'
Function group: 'Windows Multimedia'
Google
Advertise here!