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| How to detect if additional monitor is connected and active |
User rating: 9/10 (1 votes) | |
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| Before you begin: |
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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.
See also:
How to change display settings: screen resolution, screen refresh rate
How to adjust monitor brightness (Vista, monitor with DDC support)
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User rating: 9/10 (1 votes) | |
| 4378 bytes
Created: 2008-12-09 14:50:37
Modified: 2010-12-22 20:36:24
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| My comment: |
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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.
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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".
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Some graphics cards and external units (Matrox) support connections to three and more monitors. |
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