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  • Qt gstreamer problem

    - by ZolaKt
    Ptterb can you post your full code please? I copied your code. Added fvidscale_cap to pipeline, with: self.player.add(self.source, self.scaler, self.fvidscale_cap, self.sink) gst.element_link_many(self.source,self.scaler, self.fvidscale_cap, self.sink) From the main program I create a new QWidget, and pass its winId() to Vid constructor. The widget start loading, but crashes. The output says: should be playing Segmentation fault

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  • Persisting and applying Linq Query to collection

    - by MattiasK
    I have a scenario where I would want a plugin to construct a LINQ (to objects) query, send it across an appdomain and then apply and run it against a collection of my choosing Is it possible, how? If not, perhaps I could send a whole method (interface) across the appdomain and run it against the data on the appside? The main thing is that I want the data to reside in the CurrentDomain and the logic for operating on it in the plugin so I don't have to send the data across the boundary...

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  • Is there any memory leak in the normal routine of sqlite3_*()?

    - by reer
    A normal routine of sqlite3_prepare_v2() + sqlite3_step() + sqlite3_finalize() could contain leak. It sound ridiculous. But the test code seems to say it. Or I used the sqlite3_*() wrongly. Appreciate for any reply. __code________________________ include include // for usleep() include int multi_write (int j); sqlite3 *db = NULL; int main (void) { int ret = -1; ret = sqlite3_open("test.db", &db); ret = sqlite3_exec(db,"CREATE TABLE data_his (id INTEGER PRIMARY KEY, d1 CHAR(16))", NULL,NULL,NULL); usleep (100000); int j=0; while (1) { multi_write (j++); usleep (2000000); printf (" ----------- %d\n", j); } ret = sqlite3_close (db); return 0; } int multi_write (int j) { int ret = -1; char *sql_f = "INSERT OR REPLACE INTO data_his VALUES (%d, %Q)"; char *sql = NULL; sqlite3_stmt *p_stmt = NULL; ret = sqlite3_prepare_v2 (db, "BEGIN TRANSACTION", -1, &p_stmt, NULL); ret = sqlite3_step ( p_stmt ); ret = sqlite3_finalize ( p_stmt ); int i=0; for (i=0; i<100; i++) { sql = sqlite3_mprintf ( sql_f, j*100000 + i, "00000000000068FD"); ret = sqlite3_prepare_v2 (db, sql, -1, &p_stmt, NULL ); sqlite3_free ( sql ); //printf ("sqlite3_prepare_v2(): %d, %s\n", ret, sqlite3_errmsg (db)); ret = sqlite3_step ( p_stmt ); //printf ("sqlite3_step(): %d, %s\n", ret, sqlite3_errmsg (db)); ret = sqlite3_finalize ( p_stmt ); //printf ("sqlite3_finalize(): %d, %s\n\n", ret, sqlite3_errmsg (db)); } ret = sqlite3_prepare_v2 (db, "COMMIT TRANSACTION", -1, &p_stmt, NULL ); ret = sqlite3_step ( p_stmt ); ret = sqlite3_finalize ( p_stmt ); return 0; } __result________________________ And I watch the the process's run by top. At first, the memory statistics is: PID PPID USER STAT VSZ %MEM %CPU COMMAND 17731 15488 root S 1104 5% 7% ./sqlite3multiwrite When the printf() in while(1){} of main() prints the 150, the memory statistics is: PID PPID USER STAT VSZ %MEM %CPU COMMAND 17731 15488 root S 1552 5% 7% ./sqlite3multiwrite It sounds that after 150 for-cycles, the memory used by sqlite3multiwrite increase from 1104KB to 1552KB. What does it mean? memory leak or other thing?

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  • "Change" panel on jframe

    - by bog
    I have 2 panels, the first one is the menu, and the second is the application main panel. Firstly the menu panel shows up, than i need to switch to the other panel if a specific button is pressed on the menu (the menu is hidden but the app returns to it after running is completed). && i need to resize the frame too if it's possible. can i do this somehow?

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  • how to handle click event in win32 API?

    - by Rakesh
    I have created a simple win 32 application..in which it has a textbox and a button in a dialog window..first when I created this..it didnt display the dialog window and then what I did is added the code below to handle the close(WM_CLOSE) of the dialog window...but I want to know, how to handle the button click event.. LRESULT WINAPI myProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { if(message == WM_CLOSE ) { PostQuitMessage(0); } return 0; } to call the above in my main pgm I used SetWindowLong(hwnd,DWL_DLGPROC, (long)myProc)

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  • How do I output installation status using gtk in c?

    - by Runner
    int main( int argc, char *argv[] ) { GtkWidget *window; gtk_init (&argc, &argv); window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_widget_show (window); gtk_main (); return 0; } The above is just a empty winform,I want to output dynamic information in it(not editable), how should I do that?

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  • Converting a const char* into a double

    - by Koning Baard
    I am trying to convert a const char* to a double precision floating point number: int main(const int argc, const char *argv[]) { int i; double numbers[argc - 1]; for(i = 1; i < argc, i += 1) { /* -- Convert each argv into a double and put it in `number` */ } /* ... */ return 0; } Can anyone help me? Thanks

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  • How to get the substring in C#?

    - by Nano HE
    Hi, I can get the first three characters with the function below. However, how can I get the output of the last five characters (Three) with Substring() function. Or other string function will be used? Thank you. static void Main() { string input = "OneTwoThree"; // Get first three characters string sub = input.Substring(0, 3); Console.WriteLine("Substring: {0}", sub); // Output One. }

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  • Why is used umask ?

    - by fabrizioM
    I am reading some source code and I found at the very begin of the main routine this statement: umask(077); What could be the reason for that? The man page (man 2 umask) states: umask -- set file creation mode mask This clearing allows each user to restrict the default access to his files But is not clear to me why would do that? as a shortcut ?

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  • Force Tab Activity creation?

    - by Daniel
    I have a TabHost and several tabs added to it. Problem: The activities on these tabs are not created until the tab is pressed. My tabhost is broadcasting intents but my broadcast receivers are not registered until onCreate in my tab activities is called. Is there any way to force activity creation? Maybe my tabhost can call setCurrentTab and switch back to main tab(0), but is that really the best option available?

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  • Why does this programe require MSVCR80.dll?

    - by Runner
    #include <gtk/gtk.h> int main( int argc, char *argv[] ) { GtkWidget *window; gtk_init (&argc, &argv); window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_widget_show (window); gtk_main (); return 0; } I tried putting various versions of MSVCR80.dll under the same directory as the generated executable(via cmake),but none matched.

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  • What I need to know for writing a Camera Component

    - by Delphawi
    I want to write a component that uses 2 webcams (1 integrated in my laptop , the other is a USB webcam) What do I need to know (or have) to build a component to deal with the cameras (capture , record , movement recognition , and other image and video processing) ? and how ? (with C++ or Delphi) I just need to know the concepts and main techniques , any good resources or source codes would be great :) Thank you .

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  • Program for WIndows Embedded

    - by Syma
    Hi, We have request from our clients to provide a POS terminal version of our web-based software. They want to be able to enter record to their database from POS terminal (via web service) instead of using PC browser. I am the one to develop this application, as I am the lead developer of the main application. I haven't done any Windows embedded programming or .net compact edition before and would appreciate link to good tutorial or info on how to start developing for Windows CE 6.0 enabled POS terminal or device. Thanks

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  • CSS list menu; extra padding on rollover of buttons

    - by user1669878
    I have been going crazy trying to figure out why there is extra padding showing up on my navigation buttons when I rollover them. It's only showing up to the left and right of them though. Here's a link to the screenshot of what it looks like: http://i179.photobucket.com/albums/w319/jdauel/Screenshot2012-09-13at25417PM.png I think it has something to do with my CSS but I have no idea anymore. Please help me??? I tried using Firebug to figure it out with no prevail. Here's the code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>Farren's Photography</title> <style type="text/css"> html { height: 100%; width: 100%; } body { margin: 0px; } #container { font-family: Georgia, "Times New Roman", Times, serif; font-size: 1.2em; color: #000; background-color: #06F; text-align: left; padding: 0px; height: 650px; width: 960px; margin-right: auto; margin-left: auto; background-image: url(images/background_image.png); background-repeat: no-repeat; margin-top: 45px; } a:link { color: #FFF; } a:visited { color: #FFF; } a:hover { color: #FFF; } #container #logo { } #container #logo #fp-logo { background-image: url(images/logo.png); height: 137px; width: 408px; text-indent: -9999px; display: block; } #logo { height: 137px; width: 408px; position: relative; padding-top: 35px; padding-right: 0px; padding-bottom: 0px; padding-left: 35px; } #main { background-color: #FFF; min-height: 383px; width: 707px; position: relative; left: 217px; top: 16px; right: 36px; bottom: 113px; } #container #navbar { font-family: Georgia, "Times New Roman", Times, serif; font-size: 14px; color: #FFF; text-align: right; height: 45px; background-color: #CC0000; position: relative; top: 8px; bottom: 0px; left: 0px; right: 0px; } #container #navbar ul li a { text-decoration: none; } #container #navbar ul { list-style-type: none; padding-top: 16px; } #container #navbar ul li { display: inline; background-color: #280803; margin: 0px; height: 0px; width: 0px; position: relative; padding-top: 16px; padding-right: 15px; padding-bottom: 17px; padding-left: 15px; } #container #navbar ul li a:link { text-decoration: none; color: #FFF; } #container #navbar ul li a:visited { text-decoration: none; color: #FFF; } #container #navbar ul li a:hover { text-decoration: none; color: #FFF; background-color: #027e8e; padding-top: 16px; padding-right: 15px; padding-bottom: 17px; padding-left: 15px; margin: 0px; } #footer { font-family: Arial, Helvetica, sans-serif; font-size: x-small; height: 28px; position: relative; top: 8px; color: #FFF; font-style: italic; } </style> </head> <body> <div id="container"> <div id="logo"><a href="http://www.farrensphotography.com" title="Farren's Photography" target="_self" id="fp-logo">Farren's Photography</a></div><!-- end logo --> <div id="main"> <div id="content"> </div><!-- end content --> </div><!-- end main --> <div id="navbar"> <ul> <li><a href="index.html" target="_self">Home</a></li> <li><a href="portfolio.html" target="_self">Portfolio</a></li> <li><a href="mystyle.html" target="_self">My Style</a></li> <li><a href="specials.html" target="_self">Specials</a></li> <li><a href="pricing.html" target="_self">Pricing</a></li> <li><a href="contact.html" target="_self">Contact</a></li> </ul> </div> <!-- end navbar --> <div id="footer"> <div id="copyright">All images copyright© Farrens Photography </div><!-- end copyright --> <div id="network">Facebook button </div><!-- end network --> </div><!-- end footer --> </div><!-- end container --> </body> </html>

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  • Get rid of Trailing Numbers in C

    - by Tech163
    For example, #include <stdio.h> int main (int argc, const char * argv[]) { char out = printf("teststring"); printf("%d\n", out); return 0; } will return teststring10. Anyone has an idea how to get rid of the 10? Thanks in advance.

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  • How to specify java script files required by an angular app

    - by Vishal Kaushik
    I'm looking for a way to specify required js files by an angular app. So that, we don't need to include an array of tag for all the files which may be required by some ng-app. The main idea behind this requirement is - we might not need to load all the resources on the browser at once. Which ever ng-app gets loaded onto the screen, will fetch its dependencies on its own from the server. Is there any existing way within angularJS to achieve this goal..?

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  • Effect of suffixes in memory operations

    - by tur1ng
    In x86 GNU Assembler there are different suffixes for memory related operations. E.g.: movb, movs, movw, movl, movq, movt(?) Now my question is the following: Does the suffix has ANY effect on how the processor is getting the data out of main memory or will always be one or more 32-bit (x86) chunks loaded into the cache ? What are the effects beside the memory access?

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