I would like to be able to safely eject a USB drive (in Windows) when user selects that drive in a listbox and clicks the Eject button in an MFC dialog app. Any functions or (link) that would be up to date (i.e. compatible with Windows 8)?
View 1 RepliesI have an assignment where I have to design, implement, and test a class for storing integer arrays "safely". I do not know how to set up the destructor.
The goal of this programming assignment is to give students practice defining and using classes. In particular, students are required to design, implement, and test a class for storing integer arrays "safely". The array should be able to hold any number of integers up to 100.
In the class header file "SafeArray.h" students must define the class and specify the constructor/destructor functions, the public methods and private variables. In the class implementation file "SafeArray.cpp" students must implement the following operations:
constructor - to initialize the object.
copy constructor - to copy an object.
destructor - to delete the object.
set - allow the user to set a value of the array at a particular location.
get - allow the user to get a value of the array at a particular location.
print - print out the array.
add - add the elements of one array to another.
subtract - subtract the elements of one array from another.
The purpose of your main program "main.cpp" is to demonstrate that all of the methods above work properly. You should have at least one call to each of the methods, and print out the array as needed to show that the operations are performing correctly.
"SafeArray.h":
#ifndef SAFEARRAY_H
#defineSAFEARRAY_H
class Safe {
private:
// Declare variables to store A, B and C
[Code] ....
MSDN says this about EnumProcess. If PSAPI_VERSION is 2 or greater, this function is defined as K32EnumProcesses in Psapi.h and exported in Kernel32.lib and Kernel32.dll. If PSAPI_VERSION is 1, this function is defined as EnumProcesses in Psapi.h and exported in Psapi.lib and Psapi.dll as a wrapper that calls K32EnumProcesses.
Programs that must run on earlier versions of Windows as well as Windows 7 and later versions should always call this function as EnumProcesses. To ensure correct resolution of symbols, add Psapi.lib to the TARGETLIBS macro and compile the program with DPSAPI_VERSION=1. To use run-time dynamic linking, load Psapi.dll.
code to safely use this method that will safely run on older and newer OS?
I want some simple code which will return only the DriveInfo from one drive. I have the below code but it isn't displaying what I expect it to display, I have a feeling i'm using Linq wrong!
var dname = from n in System.IO.DriveInfo.GetDrives() where n.Name == "F" select n.VolumeLabel;
richTextBox2.AppendText(dname.ToString() + "
");
The above should return the devices VolumeLabel which is in port F.
Instead I get the following:
System.Linq.Enumerable+WhereSelectArrayIterator`2[System.IO.DriveInfo,System.String]
using C++ how can i check the presence of a folder in a drive.
The path of the folder is available in a std::string like std::string path = "C:TestFolder";
I have written some code to make two partitions in USB flash drive. When I ran it I am not able to make partitions on usb. What'll be the problem in this code.
Code:
/-------------------INITIALIZE AND PARTITION-------------------------------//
#include "stdafx.h"
#include <Windows.h>
#include <stdio.h>
[Code].....
I would like the user to insert a CD into their computer and click on an button on my application that allows them to read the CD-ROM and find a specific file type, e.g. csv, and then grab the info in the csv file.
I already have my StreamReader setup grabbing a filepath.
Now I am just wondering...how do I detect the CD-ROM and how do I grab the filepath of the only CSV file on the CD-ROM?
What's behind detecting a CD-ROM and grabbing a specific file type from a CD-ROM?
I heard about DriveInfo
However, that only allows me to detect a drive but not look at it's contents.
I am trying to save the excel file in D:/newfolder. but the file saving as newfolderFilename. The newfolder is already created in D drive. File save path i am getting from textbox ....
View 14 Replies View RelatedI am trying to write a to a specific sector in a flash drive. The problem is that it will only allow me to write to sectors 0 to 15. When I try sector 16 or higher nothing happens, but in sector 0 to 15 is is working fine.
#define BUFFER_SIZE 512
int main(void) {
FILE *volume;
int k = 0;
long long sector = 0;
char buf[BUFFER_SIZE] = {0};
[Code] .....
I want to read a file from my flash drive called text.csv. However, I cannot even open the port where my flash drive is connected. This is the code that I am using, but I get error since the first part. When I run the program it says "fopen Error". I am using Ubuntu 12.04.
#include<stdio.h>
#include<string.h>
#define SIZE 1
#define NUMELEM 5
int main(void) {
FILE* fd = NULL;
[Code] ....
I want to access sata hard drive(eg. D drive) at sector level using C programming.I want to read the values stored in the memory locations.
View 3 Replies View RelatedCurrently I'm trying to do something extremely basic: delete or move a file
I have a mapped network drive (Y) where I have a file I need to move from one folder to another
First was doing the obvious:
System.IO.File.Move("Y:TempFile.txt", "Y:Temp2File.txt");
Not much to go wrong here, right? As long as I have the correct permission to write in the folders and the folders exists, this would normally go smooth. But for some reason it only copies the file. The source file still exists, but it has successfully copied the file to the destination folder. No exceptions has been thrown or anything... but the file still exists in the source directory
I then changed the code to the following:
System.IO.File.Copy("Y:TempFile.txt", "Y:Temp2File.txt");
System.IO.File.Delete("Y:TempFile.txt");
Console.WriteLine("See mommy, no Exceptions");
As expected the file copies correctly, but the delete command is completely ignored. The file is not deleted, but the Console.WriteLine command is called
I'm running the application as the logged in user. The user has permission to delete the file. If I try from Windows Explorer, the file is correctly deleted. Unfortunately my application refuses to delete the file and even worse, it will not even throw an Exception.
there's a way to get a path to the recycle bin folder for a specific drive for the current user?
Say, on the input one provides "C:" and on the output you get "C:$Recycle.BinS-1-5-18"
For my purpose all I need to know is drive's BitLocker encryption status by its DOS path. Something like this:
Code:
enum DriveEncryptionStatus{
Unprotected,
Protected,
Unknown
};
DriveEncryptionStatus = GetDriveBitlockerEncryptionStatus(L"C:");
I was able to find the Win32_EncryptableVolume class that unfortunately comes with this caveat:
To use the Win32_EncryptableVolume methods, the following conditions must be met:
You must have administrator privileges.
How to do this without running as an administrator?
I have tried to use File.Copy and File.Move but non of them would work as I expected .....
View 1 Replies View RelatedWrite a program that is able to save a list of items such as books, CDs, or DVDs and the items that are saved must have attributes associated with them. For example a book has a title, author, publisher, and ISBN.I would like to create a program that is able to save the database of items to a file on the hard drive and also retrieve it from the hard drive.I have this for a start of how to set up a storing program.
#include <iostream>
#include <iomanip>
using namespace std;
int main () {
const int arraySize = 10;
int a[arraySize] = { 2, 6, 4, 10, 12, 89, 68, 45, 37 };
int i, hold;
[code]....
I'd like to compile following code:
Code:
sigfillset( &sa.sa_mask );
sa.sa_handler = &CDevice::PipeHandler;
sa.sa_flags = 0;
sigaction( SIGPIPE, &sa, NULL );
sa.sa_handler = &CDevice::TerminatorHandler;
sigaction( SIGQUIT, &sa, NULL );
sigaction( SIGINT, &sa, NULL );
Using MSVC 2010 to run on Windows 7. Is it possible?
Here are the libraries included:
#include <iostream>
#include <cmath>
#include <cstdlib>
#include "stat.h"
And heres the line being flagged:
d=ttl*drand48()-fit[0]; //intialize to reigon for first entry
The error I receive is one discussed on a number of different forums:
C:Documents and SettingssarabrownDesktopSarahScheduling Codestat.cpp|181|error: `drand48' undeclared (first use this function)|
C:Documents and SettingssarabrownDesktopSarahScheduling Codestat.cpp|181|error: (Each undeclared identifier is reported only once for each function it appears in.)|
||=== Build finished: 2 errors, 1 warnings ===|
It just seems to me theres a lot of conflicting information about if this is even possible to do on Windows and when I do try work around functions or calling double drand(void) I get a ton of errors. I'm hesitant to try rand() or something less precise. I was hoping maybe someone would be able to maybe suggest a compiler which will run this or a different library, right now I'm using Code Blocks IDE.
I am wondering how can I read a website from a given url in windows ?
View 3 Replies View Relatedi am just making some new programmings and testing it. But every time after compile and run The dos window is closing and again I have to compile And run command so i want The dos windows should prompt me for next input rather than closing.
View 2 Replies View Relatedhow can i minimize all open windows using c++ program? I want to call the minimize function at some places in my program... so write how the function structure can be made and how do i call it?
View 2 Replies View RelatedI have download the SOIL library [URL] for loading textures in OpenGL, however it doesn't come with a SOIL.lib file but a file called libSOIL.a and it says I need to compile it myself.
View 11 Replies View RelatedI have my dialog set upand I am trying to view a slider controls value. This is not to do with .NET framework it is the old controls.
View 1 Replies View RelatedI want to know how mutex is working in process synchronization. Where these mutexes are stored in memory how another process know about this mutex?
If two different mutexes are having same name what will happen?
How to make a keypad in my windows form? Need to finish my project at school...ATM machine app..
It is just the keypad part. Do i put 10 buttons and add a textbox...
Basically I want to embed the QGIS canvas widget into a custom application. In order to do that, I need to build QGIS from it's source in order to obtain the devel *.lib, *.dll, *.h, etc. files required. To that result, I am trying to build either version 2.6.* or the current nightly build ~2.7 - 2.8 64 bit version. There is very little documentation on the x64 builds. Not to mention that CMake and I are not the best of friends.
My progress so far:
- Successfully built the extremely out of date nightly build readme instructions of version 0.11 x86
- Partial success in creating CMake output to VS2010, but many required headers were not included such as gqsmapcanvas.h, (So even if I got it building I couldn't use the canvas widget in an application)
*Note I updated the external packages to x64 versions, so it is not an architecture mismatch issue.
I have also had issues with QWT looking for QWT Polar header files, but I suspect this is another issue with the missing headers as most of the errors related to files contained in the original source from GIT.