I have a dual screen setup on my ibook and I was wondering if I could use one wallpaper for both screens meaning that it would run from my ibook into my lcd.
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Dual Screen Setup... One wallpaper?
- Thread starter Hummer
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Richter said:
I know I can do that, but the thing is I have a wall paper made for dual screen setups.
Yes, but one (or both) may not look perfect. Many times wallpapers come in different sizes. If you take a 1024x768 wallpaper and stick it on an 1280x1024 LCD, it may look pixilated or it won't cover the whole screen.
You just need to have two pictures that line up like that, and assign the appropriate picture to each screen.... I don't think there's any built-in way to take one picture and somehow panoramize it so that part of it is on one screen and another contiguous part is on another screen... But if you have the image, you can make the two pieces in photoshop in ... what... a minute? 
You will need to take you image into photoshop and crop and size it just right. Or upload it here and someone else do it for you.
EDIT: Beaten by a minute...
EDIT: Beaten by a minute...
www.apple.com/support
Apple Service & Support
Mac OS: How to Set up Extended Desktop and Turn on Video Mirroring
This document explains how to set up an extended desktop and turn on video mirroring.
Extended desktop
When more than one monitor is connected to your computer, the desktop area can be extended to create a larger work area. To use this feature, your computer must generally have two or more video cards installed. (Some Apple computers can work with two monitors without requiring an additional video card. Check the documentation that came with your computer.)
The Mac OS automatically recognizes when two or more monitors are connected to the computer. You can choose which monitor has the menu bar, and you can arrange the logical desktop space to match the physical placement of the monitors (which one is on the left or right, for example).
To make these settings:
1. Open the Monitors control panel (Mac OS 9) or the Displays pane of System Preferences (Mac OS X).
2. Click Arrange.
3. Follow the on-screen instructions.
Figure 1 Mac OS 9 Monitors control panel
Figure 2 Mac OS X Displays pane of System Preferences
Video mirroring
The video mirroring feature allows you to see the same screen on two different monitors. This is particularly useful in a classroom or presentation setting where you need to be in front of an audience that is watching one screen, and you are watching the other.
To use this feature, your computer must generally have two or more video cards installed. (Some Apple computers can work with two monitors without requiring an additional video card. Check the documentation that came with your computer.)
In Mac OS 9, choose Turn Video Mirroring On from the Video Mirroring portion of the Control Strip.
Figure 3 Video Mirroring portion of the Control Strip
Follow these steps to turn on video mirroring in Mac OS X:
1. Open System Preferences.
2. Click Displays.
3. Click the Arrange tab (if necessary).
4. Click Mirror Displays to enable this option.
Apple Service & Support
Mac OS: How to Set up Extended Desktop and Turn on Video Mirroring
This document explains how to set up an extended desktop and turn on video mirroring.
Extended desktop
When more than one monitor is connected to your computer, the desktop area can be extended to create a larger work area. To use this feature, your computer must generally have two or more video cards installed. (Some Apple computers can work with two monitors without requiring an additional video card. Check the documentation that came with your computer.)
The Mac OS automatically recognizes when two or more monitors are connected to the computer. You can choose which monitor has the menu bar, and you can arrange the logical desktop space to match the physical placement of the monitors (which one is on the left or right, for example).
To make these settings:
1. Open the Monitors control panel (Mac OS 9) or the Displays pane of System Preferences (Mac OS X).
2. Click Arrange.
3. Follow the on-screen instructions.
Figure 1 Mac OS 9 Monitors control panel
Figure 2 Mac OS X Displays pane of System Preferences
Video mirroring
The video mirroring feature allows you to see the same screen on two different monitors. This is particularly useful in a classroom or presentation setting where you need to be in front of an audience that is watching one screen, and you are watching the other.
To use this feature, your computer must generally have two or more video cards installed. (Some Apple computers can work with two monitors without requiring an additional video card. Check the documentation that came with your computer.)
In Mac OS 9, choose Turn Video Mirroring On from the Video Mirroring portion of the Control Strip.
Figure 3 Video Mirroring portion of the Control Strip
Follow these steps to turn on video mirroring in Mac OS X:
1. Open System Preferences.
2. Click Displays.
3. Click the Arrange tab (if necessary).
4. Click Mirror Displays to enable this option.
Electro Funk said:
That's not at all what he's asking about. He knows how to set up dual displays...it's how to stretch a single wallpaper across both of them that is the question.
WildCowboy said:
After setting up dual displays properly shouldnt the wallpaper designed for Dual monitors automatically fill both displays???
Electro Funk said:
No. If you use mirrored displays, you see the same thing on both displays. If you use extended desktop, the default is that you see the same wallpaper on each screen. But you can change the wallpapers individually. The wallpapers do not stretch between displays unless you use the Photoshop tricks discussed above to create two separate pictures giving the illusion of a single picture.
Edit: Now that I think about it (not at my dual display setup at the moment), you should be able to stretch the wallpaper by setting it to Tile mode in System Preferences. I don't know how screens with different horizontal pixel counts handle this though...probably not well.