visible

问题 I have a datagridview with 3 rows and 2 columns. My rows and columns have headers. The problem is that i have an empty cell on the top left corner of my datagridview. I think it is the column header of my rowheaders or something like that. I don't success to hide this cell, is it possible ? Thank you Example : hide this cell | colHead1| colHead2 | -------------------------------------- firstname | x | y | lastname | x1 | y1 | society | x2 | y2 | EDIT : I tried to set the property dtgv

问题 I'm using GNAT GPS studio IDE in order to train a bit in Ada. I'm having an issue with package visibility. First I specify a package in a file called "DScale.ads" containing a type: package DScale is type DMajor is (D, E, F_Sharp, G, A, B, C_Sharp); end DScale; Then I specify in a different file ("Noteworthy.ads") a package that defines a procedure that will use the DMajor type of the DScale package: with Ada.Text_IO; with DScale; package NoteWorthy is procedure Note; end NoteWorthy; Finally

问题 I've been doing this for years. But now it's just not working. private void Form1_Deactivate(object sender, EventArgs e) { this.Size = new Size(30, 29); txt.Visible = false; lbl.Visible = false; } The form just does not change Width. But, as above, the 3 controls DO become invisible. Any suggestions? 回答1: Windows have an absolute minimum width of 134 pixels (at least on Windows 7) To circumvent this minimum, you can set FormBorderStyle to FixedToolWindow or SizableToolWindow . (Or handle

问题 I have a UITableView with 3 sections: section 1: the header title of this section is "Players" and the cotent is exactly 1 cell containing a horizontal list of 1-4 players names. section 2: the header title of this section is "Rounds" and the content is X cells each containing a horizontal list of each respective players score for round X. section 3: the header title of this section is "Totals" and the content is exactly 1 cell containing the sum of each player's round scores. Right now, all

问题 I wonder whether there is a ScrollPane property in JavaFX 8 that can be used to listen on the components that are currently displayed at a given time. For example, ScrollPane has a VBox which has 8 buttons. Only 4 buttons can be seen in scrollpane. I would like a listener that gives those 4 out of 8 buttons that are displayed while the position of the scroll changes. 回答1: You can check if the Nodes visible like that: private List<Node> getVisibleNodes(ScrollPane pane) { List<Node>

问题 Basically, I have a couple .svg images put into an <img> tag on my HTML page like that: <img src="images/corner.svg" alt="menu" class="menu" onClick="Fade();"/> All of those images are overlapping with each other. They have the same size but different content. I'm now trying to make only the content of those images clickable. With pointer-events: visible; or pointer-events: painted; in CSS that seemed to be possible, but i can't get it work like that. The image still receives clicks at every

问题 Is it possible to get the current viewport Range (the visible part of the page inside the browser) using XUL functions from Javascript or plain Javascript? Thank you! 回答1: For the viewport you need to use document.documentElement.scrollTop / scrollLeft / scrollHeight / scrollWidth . There is a slight complication: I think that in quirks mode ( document.compatMode is "BackCompat" ) you need to check these properties on document.body instead of document.documentElement . See https://developer

问题 I am currently trying to figure out the best way to select all items in a list that are currently visible. I currently have a large list of items in my scope that has paging applied to it so only a few items of this list are visible at a time. I have a "Select All" button where the desired behavior is to have it select all the items that are currently visible - not all the items in the list. I think I can achieve it by using the ng-init directive to add visible items to a list in the

问题 How can I count all the list items that are displayed on the screen when overflow is set to hidden? Using the code below still counts all the items, even the ones that overflow. var count = $("#myList ul li:visible").length; Fiddle: http://jsfiddle.net/kPAwX/2/ 回答1: var maxh = $("#myList ul").height(); $("#myList ul li").filter(function () { return $(this).position().top + $(this).height() < maxh; }); This will select all of the li s that are completely visible. If an li is partially cut off,

问题 If you set the Visible property of a Windows Forms control to true, that property still returns false if any of the control's parent windows are hidden. Is there a way to get the true, underlying visibility flag of the control in case the parent window is hidden? 回答1: Well, the regular implementation does check up the control stack, to ensure that all parents are visible. The only way I know to dodge this is to cheat with reflection, and ask for GetState(2) , but that is brittle: // dodgy;