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Gecko:Notes for mouse driver developers on Widnows: Difference between revisions
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Gecko:Notes for mouse driver developers on Widnows (view source)
Revision as of 06:47, 31 March 2010
, 31 March 2010→Post/Send WM_MOUSEWHEEL and WM_MOUSEHWHEEL messages
(Created page with 'This document is informative. = Post/Send [http://msdn.microsoft.com/en-us/library/ms645617%28VS.85%29.aspx <code>WM_MOUSEWHEEL</code>] and [http://msdn.microsoft.com/en-us/libr…') |
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= Post/Send [http://msdn.microsoft.com/en-us/library/ms645617%28VS.85%29.aspx <code>WM_MOUSEWHEEL</code>] and [http://msdn.microsoft.com/en-us/library/ms645614%28VS.85%29.aspx <code>WM_MOUSEHWHEEL</code>] messages = | = Post/Send [http://msdn.microsoft.com/en-us/library/ms645617%28VS.85%29.aspx <code>WM_MOUSEWHEEL</code>] and [http://msdn.microsoft.com/en-us/library/ms645614%28VS.85%29.aspx <code>WM_MOUSEHWHEEL</code>] messages = | ||
Gecko supports both '''<code> | Gecko supports both '''<code>WM_MOUSEWHEEL</code>''' and '''<code>WM_MOUSEHWHEEL</code>''' messages, so, all mouse drivers and utilities should post (or send) them to Gecko's window. | ||
Be aware, Gecko 1.9.3 and later (Firefox 3.7 and later) is going to support <code>WM_VSCROLL</code> and <code>WM_HSCROLL</code> messages too, however, do '''not''' post/send these messages for the wheel action. Gecko handles these messages in different path with <code>WM_MOUSEWHEEL</code> and <code>WM_MOUSEHWHEEL</code> because Gecko thinks that the messages are used only for scrolling. To put it concretely, <code>WM_MOUSEWHEEL</code> and <code>WM_MOUSEHWHEEL</code> messages cause [https://developer.mozilla.org/en/Gecko-Specific_DOM_Events#DOMMouseScroll <code>DOMMouseScroll</code> event] on the web pages, so, web application developers can handle the wheel actions and they can prevent scrolling. However, <code>WM_VSCROLL</code> and <code>WM_HSCROLL</code> don't cause the DOM event, it only scrolls a scrollable area. | Be aware, Gecko 1.9.3 and later (Firefox 3.7 and later) is going to support <code>WM_VSCROLL</code> and <code>WM_HSCROLL</code> messages too, however, do '''not''' post/send these messages for the wheel action. Gecko handles these messages in different path with <code>WM_MOUSEWHEEL</code> and <code>WM_MOUSEHWHEEL</code> because Gecko thinks that the messages are used only for scrolling. To put it concretely, <code>WM_MOUSEWHEEL</code> and <code>WM_MOUSEHWHEEL</code> messages cause [https://developer.mozilla.org/en/Gecko-Specific_DOM_Events#DOMMouseScroll <code>DOMMouseScroll</code> event] on the web pages, so, web application developers can handle the wheel actions and they can prevent scrolling. However, <code>WM_VSCROLL</code> and <code>WM_HSCROLL</code> don't cause the DOM event, it only scrolls a scrollable area. | ||