How might I trigger a keypress event in Visual Basic? I have the arrow keys in mind at the moment for moving around a map. I typed in "KeyDown" into the code window and it was accepted (I used a lower case 'D' and it changed when I hit enter) so I am assuming it has something to do with that, though I don't know exactly how to accomplish it. (I would search through a helpfile, but for some odd reason my version doesn't have one.)
Thanks in advance for any help.
Also, does anyone know where I might find a list of Visual Basic variables and functions online? Something similar to DM's help file would be extremely helpful.
ID:188738
 Jan 21 2004, 4:11 pm
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Crispy wrote:
I'd copy out the entries from the help for you (or just give you the help file), but I don't have it installed at the moment. Do that, I couldn't install MSDN at all when I got VB. That's extremley annoying. I guess I shouldn't get proffesional edition next time, as it comes with seven disks. What would I do with seven disks? Pfft. | |
Loduwijk wrote:
How might I trigger a keypress event in Visual Basic? I have the arrow keys in mind at the moment for moving around a map. I typed in "KeyDown" into the code window and it was accepted (I used a lower case 'D' and it changed when I hit enter) so I am assuming it has something to do with that, though I don't know exactly how to accomplish it. (I would search through a helpfile, but for some odd reason my version doesn't have one.) You should be able to call the KeyPress functions of the form objects, by simply doing something such as 'Text1_KeyPress(vbKeyReturn)'. Also, does anyone know where I might find a list of Visual Basic variables and functions online? Something similar to DM's help file would be extremely helpful. http://msdn.microsoft.com ~>Volte | |
Volte wrote:
You should be able to call the KeyPress functions of the form objects, by simply doing something such as 'Text1_KeyPress(vbKeyReturn)'. I think he wants to detect keypress events, not trigger them. =) | |
You have to define the keypress events in a sub, and then define which keypress your looking to modify. I don't exactly remember, its been awhile since I worked with VB.
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How might I trigger a keypress event in Visual Basic? I have the arrow keys in mind at the moment for moving around a map. I typed in "KeyDown" into the code window and it was accepted (I used a lower case 'D' and it changed when I hit enter) so I am assuming it has something to do with that, though I don't know exactly how to accomplish it. (I would search through a helpfile, but for some odd reason my version doesn't have one.) I advise againt using the keypress event since that doesn't allow you to handle people holding keys down well or people holding multiple keys. Here's how I would do it. Dim keyUp As Boolean Dim keyDown As Boolean Dim keyLeft As Boolean Dim keyRight As Boolean Private Sub Form_KeyDown(KeyCode As Integer, Shift As Integer) If KeyCode = vbKeyUp Then keyUp = True End If If KeyCode = vbKeyDown Then keyDown = True End If If KeyCode = vbKeyLeft Then keyLeft = True End If If KeyCode = vbKeyRight Then keyRight = True End If End Sub Private Sub Form_KeyUp(KeyCode As Integer, Shift As Integer) If KeyCode = vbKeyUp Then keyUp = False End If If KeyCode = vbKeyDown Then keyDown = False End If If KeyCode = vbKeyLeft Then keyLeft = False End If If KeyCode = vbKeyRight Then keyRight = False End If End Sub Then if you need to check the if any of the direction keys are held down you check the variables. For a game you'd probably want to handle this with a timer. Also, does anyone know where I might find a list of Visual Basic variables and functions online? Something similar to DM's help file would be extremely helpful. msdn.microsoft.com [edit] Oh and the keyup and keydown events refer to pressing any key down and releasing any key not using the up and down keys specifically. | |
There should be tutorials/references on the net somewhere, try Google.