Computer Science Canada How do I poll events? Or at least take multiple keydown evets at once? |
| Author: | CodeMonkey2000 [ Mon Oct 29, 2007 5:06 pm ] |
| Post subject: | How do I poll events? Or at least take multiple keydown evets at once? |
My problem is that vb only recognizes that only one key is being pressed at a time. How do I allow for multiple key presses? |
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| Author: | Tony [ Mon Oct 29, 2007 5:55 pm ] |
| Post subject: | RE:How do I poll events? Or at least take multiple keydown evets at once? |
You could possibly build up a queue for the key strokes, and read input from there. |
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| Author: | CodeMonkey2000 [ Tue Oct 30, 2007 3:13 pm ] |
| Post subject: | RE:How do I poll events? Or at least take multiple keydown evets at once? |
And how do I do that? |
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| Author: | cool dude [ Thu Nov 01, 2007 9:43 am ] |
| Post subject: | Re: How do I poll events? Or at least take multiple keydown evets at once? |
I programmed this a long time ago. here is a little example where u can press multiple keys. |
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| Author: | Brightguy [ Thu Nov 01, 2007 2:46 pm ] | ||
| Post subject: | Re: How do I poll events? Or at least take multiple keydown evets at once? | ||
Er, that's not yours. Anyway, that method is not completely reliable since a form only receives KeyDown and KeyUp events when it has the focus. An alternative is to use GetKeyboardState instead, so for example you would do:
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| Author: | MIdas0036 [ Thu Dec 20, 2007 9:53 am ] |
| Post subject: | Re: How do I poll events? Or at least take multiple keydown evets at once? |
this is something i program this aloang time ago to lock my computer while i am out of class and it has the same keypress function that you are asking about but easy to code |
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| Author: | CodeMonkey2000 [ Thu Dec 27, 2007 2:53 pm ] |
| Post subject: | RE:How do I poll events? Or at least take multiple keydown evets at once? |
What does &H80 mean? |
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| Author: | OneOffDriveByPoster [ Thu Dec 27, 2007 9:55 pm ] |
| Post subject: | Re: RE:How do I poll events? Or at least take multiple keydown evets at once? |
CodeMonkey2000 @ Thu Dec 27, 2007 2:53 pm wrote: What does &H80 mean? It's VB notation for hexadecimal. &H80 is 0x80 is (in binary: )1000 0000. |
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| Author: | CodeMonkey2000 [ Thu Dec 27, 2007 11:41 pm ] |
| Post subject: | RE:How do I poll events? Or at least take multiple keydown evets at once? |
In the if statement in the code above what is the &H80 checking? |
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| Author: | OneOffDriveByPoster [ Fri Dec 28, 2007 9:47 am ] |
| Post subject: | Re: RE:How do I poll events? Or at least take multiple keydown evets at once? |
CodeMonkey2000 @ Thu Dec 27, 2007 11:41 pm wrote: In the if statement in the code above what is the &H80 checking? Well as previously posted, 0x80 is 1000 0000. So using the bitwise-and with 0x80 (on a byte) checks if the high-order bit is set (i.e. 1). GetKeyboardState() changes the array to reflect the status of keys. "If the high-order bit is 1, the key is down; otherwise, it is up." (from MSDN) |
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