osmo focus wheel

qlineedit* peditor = new Qlineedit (m_strtext);Peditor->resize (...);Peditor->move (...);Scene ()->addwidget (peditor);Peditor->setfocus ();Note the order of the two statements in the red font. If reversed, there will be a "qlineedit how to achieve the focus when the input" problem, because focus is immediately out again, resulting in non-input.In fact, it is also very good understanding: must be placed in

This article is for the JavaScript event "event type" under the "Focus, mouse and wheel event," the attention points of the collation, share to everyone for your reference, the specific contents are as follows One, focus events These events are generally used in conjunction with the Document.hasfocus () method and the Document.activeelement property. The main a

Focus, mouse, and scroll event details in JavaScript event types, javascript scroll wheel This article describes the important points of attention for "Focus, mouse, and scroll wheel events" under "Event Type" in JavaScript events and shares them with you for your reference. The specific content is as follows: I.

Focus Events These events are generally used in conjunction with the Document.hasfocus () method and the Document.activeelement property. The main are: Blur: Element loses focus, does not bubble;Domfocusin: With the HTML event focus, abandoned in DOM3, choose Focusin;Domfocusout: With the HTML event blur, in DOM3 abandoned, choose Focusout;

Project needs to do a JS control image of the special effects, wheel control zoom, zoom, mouse drag and other effects, online find methods, various error, incompatible ... Finally, I have developed a set of options as follows:The code is copied directly from the project and is not organized.Code a bit long ╮ (╯_╰) ╭ since it is special effects, it is necessary to duang, have patience to test it! Of course there are many areas that need to be optimized