mousedown | 易学教程

Respond to mouse events in text field in view-based table view

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I have text fields inside a custom view inside an NSOutlineView . Editing one of these cells requires a single click, a pause, and another single click. The first single click selects the table view row, and the second single click draws the cursor in the field. Double-clicking the cell, which lets you edit in a cell-based table view, only selects the row. The behavior I want: one click to change the selection and edit. What do I need to override to obtain this behavior? I've read some other posts: The NSTextField flyweight pattern wouldn't seem to apply to view-based table views, where the

JS: detect right click without jQuery (inline)

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问题 I'm calling a function, that builds a table which includes several links. I want to check if a link has been clicked with right or left mouse. I tried to add the following part to the <a> hyperlink. onmousedown="function mouseDown(e){ switch (e.which) { case 1: alert('left'); break; case 2: alert('middle'); break; case 3: alert('right'); break; } }" But nothing happens If I click on a link. 回答1: The html: <a href="#" onmousedown="mouseDown(event);">aaa</a> The

JavaScript while mousedown

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问题 var mdflag; var count = 0; document.addEventListener("mousedown",mdown,false); document.addEventListener("mouseup",mup,false); } function mdown() { mdflag=true; while(mdflag) document.getElementById("testdiv").innerHTML = count++; } function mup() { mdflag = false; } I'm wanting to run code while the mouse is down, i cant find anything to suggest i can do while(mousedown) so i've tryed making a flag for mousedown which is reset on mouse up however i beleive the while loop is whats causing me