handles | 易学教程

Eclipse Unhandled event loop exception, no more handles Windows 7

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问题 My Eclipse is used to develop Android Apps. It worked fine until one day, a Unhandled event loop exception is prompt. The log is shown below. To trigger the error prompt, just unfocus the text editor in eclipse and focus it again, then the prompt is triggered, For example, click on the Package explorer (Red circle) and click on the code (Green circle) in Main.java in Eclipse. (.xml are the same). But, if I unfocus the code by clicking Package Explorer (Red circle) then click on the title of

Handles Comparison: empty classes vs. undefined classes vs. void*

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问题 Microsoft's GDI+ defines many empty classes to be treated as handles internally. For example, (source GdiPlusGpStubs.h ) //Approach 1 class GpGraphics {}; class GpBrush {}; class GpTexture : public GpBrush {}; class GpSolidFill : public GpBrush {}; class GpLineGradient : public GpBrush {}; class GpPathGradient : public GpBrush {}; class GpHatch : public GpBrush {}; class GpPen {}; class GpCustomLineCap {}; There are other two ways to define handles. They're, //Approach 2 class BOOK; //no need

Migrating 'Handles' from VB.NET to C#

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问题 I'm migrating some code from VB.NET to C# (3.5). I find structures like: Public Event DataLoaded(ByVal sender As Object, ByVal e As EventArgs) Protected Sub Mag_Button_Load_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Mag_Button_Load.Click [..] RaiseEvent DataLoaded(Me, EventArgs.Empty) End Sub [..] 'Other Class Private Sub LoadData(ByVal sender As Object, ByVal e As System.EventArgs) Handles oData.DataLoaded [..] End Sub What is the most straightforward way to translate such

How to enumerate process' handles?

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问题 Is there any way how to enumerate process with given PID in windows, and get list of all his opened handles(locked files, etc.)? EDIT: I dont care about language. If it is in .NET, I'd be glad, if in WinApi (C), it won't hurt. If in something else, I think I can rewrite it :-) 回答1: I did a deep googling and found this article. This article gave a link to download source code: I tried method in NtSystemInfoTest.cpp ( downloaded source code ) and it worked superbly. void ListHandles( DWORD

How to enumerate process' handles?

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Handles variable in GUIDE is not updating

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问题 I have a GUI created using MATLAB GUIDE. I am trying to return a value from the GUI. Here are the relevant parts of the code (complete code can be found here): function varargout = test(varargin) % --- Outputs from this function are returned to the command line. function varargout = test_OutputFcn(hObject, eventdata, handles) % Get default command line output from handles structure varargout{1} = handles.output; varargout{2} = handles.test; % --- Executes on button press in pushbutton1.

Correct use of SafeHandles in this P/Invoke use case

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问题 Working in C# with a native Dll, that uses opaque handles and internal reference counting, I have the following P/Invoke signatures (all decorated with DllImport attribute) [DllImport("somedll.dll"] public extern IntPtr getHandleOfA(IntPtr handleToB, int index); //(1) public extern IntPtr makeNewHandleOfA(); //(2) public extern void addRefHandleToA(IntPtr handleToA); //(3) public extern void releaseHandleToA(IntPtr handleToA); //(4) public extern void doSomethingWithHandle(IntPtr handleToA) /

Resizable handles with jQueryUI

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问题 I need to make resizable handles like in this image. To be more specific, I need those blue dots to be around my <div> to allow resizing from different sides. Currently I'm using the following code: <html> <head> <link rel="stylesheet" href="jquery-ui-1.10.2/themes/base/jquery-ui.css" /> <script src="jquery-1.9.1.min.js"></script> <script src="jquery-ui-1.10.2/ui/jquery-ui.js"></script> <title>border</title> <script type="text/javascript"> $(function() { $('#elementResizable').resizable({

How can I append to a text file?

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问题 I have a program written in C++ which accepts text from a user and saves it to a text file using file handles. Here are snippets of the program: The program works fine. The only problem with it is that it does not append the text to the text file. Rather, it "removes" all the existing text and only saves the new text. That is, the text saved in a previous session of the program is discarded and the new text is saved instead. How can I solve this problem please? 回答1: Include the O_APPEND flag

Saving a matlab figure and keeping all handles

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问题 I am trying to produce a figure in MATLAB with a popupmenu that changes the axes of a subplot. This works so far. But when saving the figure using File > Save, my handles get deleted and it shows me the following error message: Error using struct2handle Error while evaluating uicontrol CreateFcn Error using handle.handle/set Invalid or deleted object. Error in popup_test/mimi (line 33) set(h1,'XData', [0,8],'YData',[0,8]) Error while evaluating uicontrol Callback It appeares, that when saving