How to detect if additional monitor is connected and active -- Visual FoxPro : Using Win32 (WinAPI) Functions


	Using Win32 functions in Visual FoxPro	Image Gallery




functions • examples • solutions • updates • about •	links • articles •	login •


	Code examples:

	How to change display settings: screen resolution, screen refresh rate



	Enumerating data formats currently available on the clipboard



	Custom GDI+ class



	Mapping and disconnecting network drives



	Winsock: retrieving directory listing from an FTP server using passive data connection (FTP, port 21)



	Capturing keyboard activity of another application with the Raw Input API (VFP9)



	Winsock: sending email messages (SMTP, port 25)



	How to display the Properties dialog box for a file (ShellExecuteEx)



	Disk in drive A:



	Using Font and Text functions



	Detecting changes in connections to removable drives (VFP9)



	How to download a file from the FTP server using FtpGetFile



	Enumerating raw input devices attached to the system (keyboard, mouse, human interface device)



	How to play AVI file on the _screen



	Using EnumPrinters function to enumerate locally installed printers



	Using Video Capture: displaying on FoxPro form frames and previewing video obtained from a digital camera



	Running MSDOS Shell as a child process with redirected input and output (smarter RUN command)



	Splash Screen for the VFP application



	Subclassing CommandButton control to create BackColor property



	Creating irregularly shaped FoxPro form using transparency color key



	Vertical Label control



	Converting Unicode data from the Clipboard to a character string using a given code page



	Creating a console window for Visual FoxPro application



	Enumerating network resources



	Other pages with examples: >> [1] 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

How to detect if additional monitor is connected and active

User rating: 9/10 (1 votes)

Rate this code sample:

More code examples Listed functions Add comment W32 Constants Translate this page

Versions:
click to open

Before you begin:

Nowadays having two monitors connected to a PC becomes more a common place rather than exception. This code sample explains how to detect all available monitors through enumerating display devices and their properties.

How to adjust monitor brightness (Vista, monitor with DDC support)


	Members area. Log in to view this example.

		Sign up for the Membership

User rating: 9/10 (1 votes)

Rate this code sample:

4378 bytes
Created: 2008-12-09 14:50:37
Modified: 2010-12-22 20:36:24
Visits in 7 days: 129

Listed functions:

EnumDisplayDevices
EnumDisplaySettings
GetMonitorInfo
MonitorFromWindow

My comment:

In the cursor created by this code sample, each connected monitor is indicated by non-empty MonitorName value.

For an active monitor (the desktop extends to such monitor), several other values are populated:

Screenwidth

Screenheight

Bitsperpixel

DsppositionX

DsppositionY

From the screen dimensions and the display position it is possible to determine whether a given window is visible on a particular display.

* * *
Read Two monitors are better than one by Tony Northrup published on Microsoft website. Bet he might be busy writing a sequel "N+1 monitors better than N".

* * *
Some graphics cards and external units (Matrox) support connections to three and more monitors.

Word Index links for this example:

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.




functions • examples • solutions • updates • about •	links • articles •	login •




	Copyright © 2001-2013 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 (5.1.55-log), the Open Source standard SQL database, AceHTML Freeware Version 4, freeware HTML Editor of choice. Hosted by Korax Online Inc.

Last Topics Visited (23.20.196.179)
6.45 min.	Function group: 'Region'



1.15 hrs.	Function: 'WTSEnumerateProcesses'



2.76 hrs.	Example: 'How to print picture stored in enhanced-format metafile (*.emf)'



2.77 hrs.	Example: 'CryptoAPI: Collection of Providers class'



8.87 hrs.	Example: 'How to make application automatically close all documents it opened'



	Example: 'Retrieving the IP-to-physical address mapping table'



10.8 hrs.	Function: 'GdipSetClipRectI'



	Example: 'Using MessageBeep'



	Example: 'Who is the first in viewing the Clipboard'



19.52 hrs.	Example: 'Retrieving information about the specified icon'