parent

问题 Ok, I know that FrameworkElement , which is a direct subclass of UIElement , has a Parent property, but Panels have children of type UIElement , not FrameworkElement (Children is of type UIElementCollection ) which seems it would mean you can add UIElement s directly to a Panel. That said, if you have a UIElement and want to see if it has a parent that's a panel, the only way I know how to test this is with the VisualTreeHelper , but that's the visual tree, not the logical tree. (At least we

问题 Allright, I've been struggling with this for a while now and I can't really figure out how I should be doing this in Python / Django. Maybe there is something fundamentally wrong with my database. In that case, help is appreciated. This is a print screen that contains my database structure: https://gyazo.com/bcb0c1090a005c581f3a62ba24d9302e Note, a program can have an arbitrary amount of Chars (Characteristics), which each can have an arbitrary amount of cats (Categories). Now, in this

问题 i cant access clicked object(this) parent's class.. click same elements and different returns? this is DEMO HTML <div class="rows row1"> <div class="ele">1</div> <div class="ele">1</div> <div class="ele">1</div> </div> <div class="rows row2"> <div class="ele">2</div> <div class="ele">2</div> <div class="ele">2</div> </div> jQuery $('.ele').click(function() { if ( $(this).parent().hasClass('r1') ) {//way1 alert('you clicked 1st row element'); } else if ( $(this).parent().hasClass('r2') ===

问题 I would like to link a GUI to a certain window, so it could act like it's a part of it. This is my GUI and I would like it to follow the Calculator (for testing). If the calculator is minimized, the gui would be minimized as well. Thanks in advance! #SingleInstance Force #Persistent BC = 0 Gui, Color, EEAA99 Gui, Margin , 0, 0 GUI, +AlwaysOnTop -Border -SysMenu -Caption +ToolWindow +Owner Gui, Font, S48 CDefault Bold CBlue, Verdana Gui, Add, Text, BackgroundTrans , Units completed: Gui, Font,

问题 I am trying to traverse all the ancestors of a process to store their info in a static array passed by the user, and I am using the NULL pointer end flag to end traversing. However, this does not seem to work, and will continue looping until the size number (the capacity of the array) passed by the user space matches num_filed number (the number of elements in the array) in all cases, even if I have very little number of processes running. So, what seem to be the ending flag for traversing

问题 I have the main page that contains multiple frames within the frameset. One of the frames is a toolbar with buttons, I would like to be able to press a button on that toolbar and it will go and hide one of the frames on the main page. I've tried the following from within the toolbar frame but it doesn't work... $(document).parent.$("#other_frame").hide("slow"); I'm REALLY new to jQuery and after searching the web I'm pretty much lost. Thank you for your help. EDIT: My complete main page

问题 I ran into some very strange behaviour on PHP5.4 (also present in 5.5). Basically, I am calling a non-static method statically and I am not getting an E_STRICT error where I definitely should be getting one. <?php error_reporting(E_ALL); class A { public function iAmNotStatic() {} } Now, if I do this: A::iAmNotStatic(); Then I get the error as expected Strict standards: Non-static method A::iAmNotStatic() should not be called statically . And also, if I make the call from object context, I

问题 This question already has answers here : XML with xpath and PHP: How to access the text value of an attribute of an entry (2 answers) SimpleXML: Selecting Elements Which Have A Certain Attribute Value (2 answers) Closed 6 years ago . I am looking to get the value A-1 through xpath based on a passed attribue. I have passed the index attribute of the unit through php from a previous page and am accessing it by global GET: $value = intval($_GET['index']); the xml: <UNIT index='1'> <ID>A-1</ID>

问题 I want to get the HTML inside the parent element. For example, I have this structure: <div> <div>text<b>more text</b>and <i>some more</i></div> </div> and I want to get text<b>more text</b>and <i>some more</i> as a result. Here's my code: $dom = new DOMDocument(); $dom->loadhtml($html); $xpath = new DOMXPath($dom); $text = $xpath->query("//div/div"); $html = $dom->saveHTML($text->item(0)); And the result is <div>text<b>more text</b>and <i>some more</i></div> I thought of using preg_replace

问题 I have a function in a child class which counts the number of SQL queries in a page load In the child class which extends the parent class, after every: mysql_query($query); I put parent::update_query_function(); where update_query_function() is: function update_query_function(){ $this->query_num++; } the $query_num variable in the parent class is not being updated. Why? 回答1: If your child class extends the parent class there's no need to do that, do this instead: $this->update_query_function