» update to mouse & keyboard nodes
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update to mouse & keyboard nodes

the mouse and keyboard nodes of vvvv have seen a complete rewrite in the lastest alpha version (29.4). their interface (in- and outputs) and behaviour is still the same, but under the hood they work differently:
up till now vvvv installed a so called system wide global hook on startup which rerouted mouse and keyboard messages from other processes to the vvvv process.
for reasons beyond the scope of this blog post, this caused random freezes of vvvv or even crashes of other processes. another issue was that it only worked with one vvvv instance at a time.
with the new nodes we got rid of those global hooks. in case of the window versions of the nodes we use a much safer technique called subclassing and in case of the global versions the keyboard and mouse states are retrieved at node evaluation.

hopefully this change shouldn't affect the user at all, if it does, please report in our alpha forum.

what's probably also worth mentioning is that the mouse nodes now output the state of XButton1 and XButton2.

to plugin developers:

  • if you're writing a gui-plugin (eg. a renderer) and want the window versions of the mouse and keyboard nodes to work with your plugin, implement the new interface IUserInputWindow where you return the window handle of the control which has focus. for an example have a look at the source code of our svg renderer.
  • MouseState uses the System.Windows.Forms.MouseButtons enumeration now.
Elias, Friday, Apr 5th 2013 Digg | Tweet | Delicious 3 comments  
sebl 05/04/2013 - 17:34

does this hav any effect onm working with touchscreens? (they didn't work that well with the previous nodes... e.g. no "mouse"-buttons where working)

herbst 06/04/2013 - 17:35

If no functionality is changed this probably means that mouse/keyboard input still won't work from non-vvvv fullscreen windows (--> "global" is not really "global"?)

E.g. having vvvv in the background as a "do-something-in-the-background-central".
I created a "real" global keyboard hook some time ago (for the vvvv-Unity-connection I was showing at NODE13), because built-in "Keyboard Global" didn't receive keys from fullscreen Unity.
I just uploaded it to contributions: global-keyhook

david 21/08/2013 - 17:55

indeed we have a bad click output in vvvv mouse-nodes-click-with-ir-hid-touchdevice-not-working-properly

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Shoutbox

~9d ago

fleg: This Tuesday, Cologne: exhibition opening of "interwoven", textile disinformation patterns created with vvvv. https://fleg.de/news/exhibition-interwoven

~22d ago

manuelgonzalvez: Assimp nodes all broken afted Win Update w/exception "COM object that has been separated from its underlying RCW(...)"

~22d ago

manuelgonzalvez: @levi thanks would love to! anyway managed to get something similar working based on forum search and anthokio's patches.

~23d ago

levi: @ravasquez thanks. 31.2 x86 verrion worked. @manuelgonzalvez i have a dx11 projectTexture if u a want.

~24d ago

manuelgonzalvez: Anyone has a dx11 port of "projectedTexture" dx9 fx for projection mapping?

~24d ago

manuelgonzalvez: Anyone has a dx11 port of "projectedTexture" dx9 fx for projection mapping?

~25d ago

ravazquez: @levi not sure bout the ImagePack, but I believe VL.OpenCV should give you the same tools and should work with beta just fine

~25d ago

levi: anyone knows of a VVVVpacks.image that works for elliot's projector calibration patches?x64,dx11. always crashes v4 on solve.

~1mth ago

Lorenz: VJing with GIFS: https://lorenzpotthast.de/gifjockey/ A fun little side project, that I first prototyped in v4 and now turned web-based ;)

~2mth ago

schlonzo: finally fixed in 4.8 nice1