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| Home >> Unit 3 >> Lesson 1 >> Lesson 1 Continued |
| Introduction to NBAs | ||||||||||||||||||||||||||||
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*Note: A description of each will give you an idea of how each work so you can decide if it s an appropriate action to use. You will find the NBA titles on row 1 on this page. Rows 2-4 are on the next page. You can use the table to link to any NBA title on either page. Use the back button on your brower if you need to go to the page you were on.
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| AutoRecord | This NBA records a sound to the specified file in the same folder as the stack. The cursor changes to a microphone during the recording. |
AutoRecord Instructions: Recording is activated by sound above a certain threshold (selectable at three sensitivity levels). If the record time is set to a non-zero value, recording continues until that number of seconds has elapsed. If the record time is set to zero, recording continues until the sound drops below a certain volume for one second. In addition, recording can be stopped by clicking the mouse button. There is also a limit on the sound file size of approximately one-third of available disk space. Recording will stop when this limit is reached. |
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| BackToBrowse | This NBA allows you to put HyperStudio into the browse mode (you know, the little hand). To use this NBA, activate it, and from then until you move off that card whenever the cursor is over the button that activated it, it will change the cursor back to the browse cursor. |
| Button Runner | This NBA allows you to activate many buttons from one. Just type in the names of the buttons you want to activate (one per line). |
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| CD Player | This program allows interaction with a CD-ROM drive to select a range of sound to play, and generate the text for a CD "Play" command to be used when the button is pressed. You can see further details under INFO when you click on this title. |
| ClearChangeFlag | This NBA allows you to clear the change flag. If you call this NBA it will make HyperStudio think that the user has not made any changes, allowing you to close a stack without getting a reminder to save changes. You should be very careful when using this NBA in that user changes can be lost. No parameters are required.
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| Hide Cursor | Type in the command text window:
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| I'm a Home Stack |
This NBA makes HyperStudio think that the current stack is a 'Home Stack' even if it is not named Home.STK. No parameters are required for this NBA. |
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| Movie Controller | This NBA allows you to control the active movie. To use this NBA just enter one of the possible commands. The commands are:
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| Multiple Hide/Show | This NBA allows multiple objects to be hidden, shown or toggled. In the text field below, type each object on its own line. This NBA allows multiple objects to be hidden, shown or toggled. In the text field below, type each object on its own line. |
| Restrictions: Each object must have a name. Objects that are specified in more than one command will be controlled by the last command. |
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| NetPage | This NBA allows you to give a full URL specification to Netscape or Microsoft Internet Explorer. It will first try to run the default browser, and then look for either Netscape.exe or Iexplore.exe (Microsoft's Internet Explorer). |
| Pause | This NBA causes HyperStudio to do nothing for a given amount of time. Just enter the number of seconds that you want HyperStudio to wait. HyperStudio will stop waiting if someone presses a key or clicks the mouse. |
| PictureShow | This NBA displays pictures from a directory. You can control whether or not the name of the picture is displayed (in the lower left corner of the screen) and whether or not the screen is left as-is when returning to HyperStudio. If you choose to do a "slide show" you can specify the delay between the pictures and if you want the show continuously repeated. The show will abort if you hit the ESCAPE key! |
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| Quit | This NBA allows you to quit HyperStudio with a button action. If changes have been made to the stack then HyperStudio will ask the user if they wish to save changes before quitting. No parameters are required. |
| Roll Credits | This NBA allows you to automatically scroll the contents of a text field. You can also call this NBA from a scripting language like HyperLogo. The parameters you have to pass to RollCredits are the name of the field, how many steps, how fast, and how many pixels to scroll each time. |
For example, If you wanted to scroll a field named "fred", twenty steps, at a speed of 5 (pretty fast), and scroll 3 pixels at a time you could use the following HyperLogo line: CallNBA "RollCredits "fred\ 20\ 5\ 3 4 (the "4" above is the "Run" message you send to NBAs). We will learn more about this NBA in this unit. |
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| Sequencer | This NBA will activate one or more card objects from one button. You may also specify the number of seconds to wait before activating each object. Caution: Objects with animations attached can be called from the Sequencer. However, unexpected results may occur when adding animations to the same button or object that runs the Sequencer NBA. |
| SlideShow | This NBA allows you to start a continuous display of the cards in your stack, starting with the first one. Display ends after the last card has been displayed, with a mouseclick or keystroke. Options include specifying the type and speed of transition, whether the stack returns to the first card in the stack, and whether the current card accepts a mouseclick. |
| StarField | This NBA draws moving stars on your card. This might be used as a nice effect when moving between cards. |
| TextMover | This NBA allows you to move the text from one field into another. Just enter the name of the field where you want the text to come from on the first line. Then enter the name of the text field that the text is to go into on the second line. |
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Next we will begin instruction for the NBA, Roll Credits. This NBA is very useful and the students will love it!
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