C++ :: How To Tell If File Is Locked Without Opening
Dec 11, 2013I need to find if a file is locked, but I dont want to open the file as I will be checking 1000's of files.
can I do that in C++ or VC++
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C# :: File Gets Locked For Editing When Use Openfiledialog
Oct 30, 2014I have a button that opens a file dialog box so that a user can pick a file. I only need it for the path and file name to be passed to another program. I do not want to open the file or care about its contents. I just want the name and path.
private void button1_Click(object sender, EventArgs e)
{
OpenFileDialog dialog = new OpenFileDialog();
[Code].....
The problem is that as long as the program is running the file that the user picked is locked for editing. Adding the Dispose() had no affect. Multiselect and ReadOnlyChecked have no affect. Only closing the application frees the file.
C :: Opening A Data File Or Not
Jul 18, 2013I have attempted a couple of different times to open a .txt file in a program, however it always goes to the "file was not opened."
Code:
#include <stdio.h>
#include <stdlib.h>
int main()
{
FILE *inFile;
[Code]....
C++ :: Opening A File Within A Directory
Apr 26, 2013I have problems opening a file within a directory.
#include <dirent.h>
#include <string>
#include <vector>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
[Code] .....
Error Message:
$ ./dirsearch ~/Documents/College/textfiles/
[..]
[yomama.txt]
Error : Failed to open entry file - No such file or directory
Here are my current file permissions:
textfiles$ ls -l
total 8
-rw-rw-rw- 1 jav jav 7 Apr 26 13:14 moretext.txt
-rw-rw-rw- 1 jav jav 10 Apr 26 12:38 yomama.txt
C++ :: CPP File Not Opening Correctly?
Nov 2, 2014When I try to open the cpp source in Visual Studio, it just opens a blank notepad window. The cpp file says its 4 kb and there was code in it.
View 5 Replies View RelatedC/C++ :: How To Print PDF File Without Opening It
Feb 21, 2015I would like to know what is the best compiler for a very simple program. I'd like to be able to print a pdf file without opening it.
View 3 Replies View RelatedC :: Opening A File For Read Only On Screen
Apr 4, 2013How to open a file and just print what is in that file on the screen. I though maybe I had the directory wrong but putting G: or G: give me the same result. When I select 1 it just goes to the next line and doesn't print anything.
Code:
int getchoice(void)
{
int num;
int choice;
FILE* outputfile;
[Code] ....
C :: Opening Audio File Using Language
Sep 6, 2013how to open an audio file using c. write a code to open an audio file.
View 2 Replies View RelatedC :: Opening File - Read / Write
Aug 5, 2013this is my read/write functions based the read from the last post! then went nuts with it! used the %19s%*s on the write to the file, solved all the probs on the read side! but any refining on this would be great. This is another program that i started with the forums, and started going my own direction!
Code:
void WriteAccount(int account,char *a[])
{
FILE *fptr;
char Memo[20];
char buff[20];
double Amount;
struct tm *sTm;
}
[code]....
the a[] is a string array with bank account names, and Account is the number on the menu based list.
C :: Opening File And Copy String To That In Other
Jun 22, 2014I am getting an error when i try to open FILE which user must enter then program must open that file i an function and copy string from that file in other .
Error is expression (stream !=NULL)
insert Code:
#include <stdio.h>
#include <stdlib.h>
void FileCopy(char a[],char b[]);
void main() {
char a[40],b[40];
[Code] ....
C++ :: Opening File Using Variable (Char Or Int)
Mar 14, 2013Can we open a file in c++ using a variable(either character or int)?
View 1 Replies View RelatedC++ :: Opening A File In Void Function
Feb 26, 2013how do you open a file inside of a void function
this is the code i have
#include <iostream>
#include <fstream>
#include <sstream>
[Code]....
C++ :: Opening User Input File Name?
Jun 17, 2013why this is looping in an error message. I am inputting the entire file name when I run the program and it just keeps falling into my "if(!inputfile)" statement. Let me know if there is anything I'm just not seeing.
#include "File.h"
#include <iostream>
#include <fstream>
#include <string>
[Code]....
C++ :: Error Opening File In Input
Nov 8, 2014ofstream infile;
infile.open("Input.txt");
if(infile.fail()) {
cout << "Error Opening File in Input" << endl;
system("pause");
exit(1);
}
So I'm trying to see if it fails, but if i change "Input" name would the computer just create a new file name of it for example if i change "Input" to "asdf" the computer is just going to create "asdf" how do i fix it.
C++ :: Opening And Reading Text File
Nov 6, 2013My project includes opening and reading a text file ("customers.txt"). This is my text file:
6
Joe
P 10.02 Y
Mary
r 15.50 N
Dan
U 19.00 y
Victoria
R 6.50 y
Nick
n 0 Y
Vigo
p 18.27 N
I wrote this code, but it seems not to find the text file.
#include <iostream>
#include <fstream>
using namespace std;
int main() {
ifstream inputFile;
int number;
[Code] ......
C Sharp :: Opening A File By Using The Extension?
Apr 24, 2013The code below is used to return a file path.
private string BrowseJournalFile(string startRelativePath)
{
string str = "Journal files (*.log)|*.log|All files (*.*)|*.*";
return PathTools.BrowseFile(startRelativePath, str, this.RootPath);
}
So once I click browse I get something like "E:New Files" But there is this .log file in this folder which I want to automatically store in this path.
Right now I have to click on this .log file and then select open. Is there a way I can directly load the file.I have been trying to use the FileStream but no luck.
C++ :: Wfopen And Fopen Not Opening File
Mar 16, 2012_wfopen and fopen don't open exist file... File name I viewed during debugging
Code:
wchar_t *CurrentDir = new wchar_t[512];
GetModuleFileNameW(NULL, CurrentDir, 512);
int sz = wcslen(CurrentDir);
for (int i = sz-1;;i--) {
[Code] .....
C# :: Form Gets Locked Up When Connecting To Database
Aug 17, 2014I'm trying to connect to a SQL Server Database, but when I click my button1 my entire form just locks up and nothing happens! I have to click the "Stop" button to stop the form from running in Visual Studio! I'd at least expect to receive an error if some of the connection string was wrong.
Here is my code:
private void button1_Click(object sender, EventArgs e) {
connection();
}
public void connection() {
SqlConnection myConnection = new SqlConnection();
[Code] ....
Visual C++ :: How To Log Off A User When Workstation Is Locked
Nov 30, 2013I wrote a Windows application that comes with two modules: service and user-mode exes. The service implements its own scheduler and may log-off a user at a predefined time. For that I was using the following call that is triggered from my user-mode module exe in a logged-on user session that has to be logged off:
Code : BOOL result = ExitWindowsEx(EWX_LOGOFF, reason);
This works fine, except of the situation when a user's account is locked. In that case that API doesn't seem to do anything at all even through I get 1 returned from it.
So I was curious, is there any other way to log off a user when their account is locked? (One condition I have in this case is that if that user had any unsaved documents then the log-off should not be forced.)
C/C++ :: Error Handling For File Opening And Reading
Apr 23, 2014I am writing to write a program and performs the following tasks
- Reading a file (txt file contains some temperature values)
- Display the temperature values (contents of the file)
- Calculating the average of the temperature values in the file.
- finds the maximum and minim value of temperature in the file.
The program is user interactive and waits for the user input and process according to his input (choice)
I have managed to complete the program and covered all the expect except the error handling for file opening and reading, although I have managed to do it for the part one part (i.e for the choice == 1)
I can repeat it for the other choices (i.e for 2, 3 ) but I do not want to repeat the code and do it in a different function or do it once for all. While making an attempt I can not handle the rest of the program and all the program turns into a mess.
#include <iostream>
#include <fstream>
#include <iomanip>
int menu();
int myChoice(char);
char inputValidating();
[Code] .....
Need Error handling for file opening and Reading that is used once, So far I have managed to do it for choice 1
Text file can be found in the attachment
C++ :: Opening Files In Hex Mode To Compress File Size
Sep 10, 2014I have an idea which i will try to implement in C++,I want to compress file size through making my own numbering system which is 80-based number, I do really want to know whether this even possible ? I learnet that Hexadecimal uses symbols like A, B, C, D, E, F to represent 10,11,12,13,14,15 -- and that's what i want to do to my own numbering system but in a bigger scale .if possible: How can i use C++ to open a file in Hex mode ?
View 6 Replies View RelatedVisual C++ :: Opening A File From Local Path - GetStatus Failed?
Aug 1, 2013I am trying to open a file from local Path by the follwing code
CString csRegExtractFileRemote;
CFileException ef;
CFileStatuscfsStatus;
CFile cfSAP;
csRegExtractFileRemote = "c:SWRemoteFilesample.txt";
[Code] ....
Compilation is success full ,but i am observing that some junk value is there in the path variable. After Reaching If statement cursor went to final return statement ...
Visual C++ :: Internet Explorer Displays Blank Page When Opening Local File While Screen Is Off?
Apr 28, 2015I'm making a small MFC module that should generate a report (formatted using HTML) and then display it for a user on schedule at 8:30 AM every day. Pretty straightforward stuff.
I compose my report and then save it as a local HTML file in the CSIDL_APPDATA folder. I then use the following calls to display it using the default web browser (Internet Explorer in this case):
Code:
//Error checks are omitted for brevity
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
ShellExecute(NULL, NULL, strSaveFileTo, NULL, NULL, SW_SHOWNORMAL);
This module is run on schedule from the Task Scheduler. (The task is set up to run when a user is logged on, which is all the time for that PC. It is never turned off, put to sleep, etc. That computer has only one user that is never logged off either.)
This works perfectly fine when I test it by setting the task a minute or so in the future. But when the actual task is supposed to run at 8:30 AM, when the user wakes the screen all they see is a blank Internet Explorer page. (Note that if someone refreshes that page by hitting F5, only then my report is shown on the screen.)
So I started looking into it:
1) I checked that the file is properly saved (before calling ShellExecute) by reading it back and by comparing it with the original HTML markup that I saved earlier. It's all correct there.
2) I then checked the power saving options. That computer is set up to show screensaver after 5 minutes and to turn off screen after 25 minutes.
3) The web browser that causes this issue is IE version 11, with the latest updates installed. The operating system is Windows 7 Professional.
And why is IE showing a blank page only when computer is running unattended?
C/C++ :: Opening Application From Another Linux Mac
Dec 15, 2014I want to open an application A from another application B. By opening it, I don't want to open it within B. I found many ways to call an application from within another. However, what I want to do is open the other one(A) simultaneously. How can I achieve this? fork() and exec() seem to open A within B. I am developing a code for Linux and Mac.
View 7 Replies View RelatedC++ :: OpenCV - Opening And Closing Webcam
Jan 24, 2015I am trying to switch between 2 states, and the event that determines which state i am in is based on the key i've pressed. So in this case i want the webcam to start automatically, and when key is pressed it then turns it off. The way I've done it is like this :
bool webcam_on() {
int c = 0;
VideoCapture cap(0);
if ( !cap.isOpened() ) // if not success, exit program
[Code] .....
The problem with this method is that cin.get() blocks the video stream.. I wanted something that the webcam turned on until i press some key, which would trigger the release.. How can this be done?
C# :: Opening / Finding And Reading A Value From Excel
Jul 3, 2014I'm attempting to write a method that opens a file from Excel, finds a value within the spreadsheet and returns the value from another column along that row.
So I know I want to pass in the filename and the item I'm initially searching for, plus also a column identifier and that way I can locate so something like this:
public static int GetParameter(string filename, string parameter, string channel)
I've attached a snip of the spreadsheet so you can see what I'm lokoing at. I want to open the spreadsheet, find the parameter I've specified, move along the column to find the channel I've specified and finally read and return the value.
The bit that's troubling me is I have no idea how to work with excel in c#. I've done a few searches and I believe I need to add thiese references
using DocumentFormat.OpenXml.Spreadsheet;
using DocumentFormat.OpenXml.Office2010.Excel;
using DocumentFormat.OpenXml.Office.Excel;
using Excel = Microsoft.Office.Interop.Excel;
using Excel;
I have added those usings and also made reference to them in my project. I was also looking at this as well but it just confuses me in how I add my parameters and modify the code to suit:
using System;
using System.Windows.Forms;
using Excel = Microsoft.Office.Interop.Excel;
namespace WindowsApplication1 {
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
[Code] ....