Visual C++ :: MFC CRecordset Heap Corruption Detected At Close
Oct 28, 2013
I recently upgraded my operating system from Windows XP to Windows 7 SP1 64 bit. We are using Visual Studio 2008 Professional Edition and Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production.
When I try to execute this code I am getting the below exceptions
HTML Code:
try {
CDatabase *pDatabase = CDatabaseConnection::getDatabaseConnectionProcessLog();
ORSProcessLog rsProcessLog(pDatabase);
[Code] .....
Where rsProcessLog is the CRecordset object using a successfully connected database pointer pDatabase
In 32- bit Debug version I get a message box at rsProcessLog.Close(); with the below text Debug Error
Program: ......Test.exe
HEAP CORRUPTION DETECTED: after Normal block (#506) at 0x0087F628. CRT detected that the application wrote to memory after end of heap buffer.
Memory allocated at f:ddvctoolsvc7libsshipatlmfcsrcmfcdbcore.cpp(2626)
(Please Retry to debug the application)
In 32- bit Release version I get a message box at rsProcessLog.Close(); with the below text Windows has triggered a breakpoint in Test.exe
This may be due to a corruption of the heap, which indicates a bug in Test.exe or any of the DLLS it has loaded.
This may also be due to the user pressing F12 while Test.exe has focus.
The output window may have more diagnostic information.
The above code was a working code in Windows XP with the rest of the env remaining the same and it continues to run in Windows XP but not in Windows 7.
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May 17, 2013
I need to write a piece of code that opens a QuickTime VR image into an MFC Dialog. I drew a Dialog and put an "Apple QuickTime Control 2.0" into it. Then I created a Control variable in my Dialog class, called QtControl. In the OnInitDialog I set the file to open, calling the put_FileName of the control.
I tested it by:
- opening a dialog --> worked
- closing it --> worked
- opening again --> crashed. The error was:
"Windows has triggered a breakpoint in TestOcx.exe.
This may be due to a corruption of the heap, which indicates a bug in TestOcx.exe or any of the DLLs it has loaded.
This may also be due to the user pressing F12 while TestOcx.exe has focus.
The output window may have more diagnostic information."
I tried many things and googled a lot, but the only way that I found to avoid this crash was hardcoding a valid URL in the QtControl resources at compile time. In other words, if I write a valid absolute path to a .mov into the URL property of the QtControl from Visual Studio and compile it, then it works. Obviously, I can't do this because the absolute Path is valid only on my PC.
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Apr 1, 2015
I referred Auto-close message box.
But i like to view the message box with out title bar and buttons. Is it possible?
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Nov 4, 2014
I was opened CPropertySheet from main dialog at very first time, again i was opened the CPropertySheet from current PropertySheet's Page 1 using button click event.
How can i close these two sheets and go to main dialog.
I was used EndDialog(0);
Which goes to previous sheet only.
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Jul 9, 2013
I'm currently doing a project which will trigger an alarm and light up an LED when a character 'E' is detected from a bluetooth input. I'm supposed to program a pic18f4525 board.
I'm having troubles with where to start on the codes to enable the LED to light up upon detection of character 'E'. I'm using ports RD0-RD3. This is how I initialised them in the main loop.
Code:
TRISD = 0b11000000;
PORTD = 0xC0;
Am I doing the initialising right? Also, how to program it to light up when the character's detected?
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Oct 28, 2013
I am getting an error "Unreachable code detected" when I add a switch statement.
My code looks like:
private void calbtn_click(object sender, EventArgs e) {
double regFee;
double lodging;
double days;
string Total {
string course;
[Code] ....
(Everything works functionally until I try to add the switch statement.)
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Jul 18, 2014
what I'm trying to do is output a certain string depending on the color I see in the video feed. For right now, what I've done is threshold the feed so that everything above a certain brightness shows up as Red. Now I want to have something that says if there's any red in the feed, then I output a "1" to a text box on my user interface that's showing the feed. If there is no red, then I output a "0" to the text box.
I'm using Emgu CV C ++ with VS2010.
This is the code I have so far that isn't working correctly, it's giving me a compiler error.
cvConvertScaleAbs(frameFromCamera->Ptr.ToPointer(),frameDisplay->Ptr.ToPointer(),double(1)/16,0);
cvCvtColor(frameDisplay->Ptr.ToPointer(),frameColorDisplay->Ptr.ToPointer(),CV_GRAY2BGR);
cvThreshold(frameDisplay->Ptr.ToPointer(),maskSaturated->Ptr.ToPointer(),200,255,CV_THRESH_BINARY);
[Code] .....
and the error it's giving me
BAOTFISInterface.cpp(1010): error C2664: 'Emgu::CV::Image<TColor,TDepth> ^Emgu::CV::Image<TColor,TDepth>::InRange(Emgu::CV::Image<TColor,TDepth>
^,Emgu::CV::Image<TColor,TDepth> ^)' : cannot convert parameter 1 from 'Emgu::CV::Structure::Bgr *' to 'Emgu::CV::Image<TColor,TDepth> ^'
[Code] .....
Build FAILED.
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May 2, 2013
I have this code that is supposed to store numbers in one vector and another vector stores pointers to the values in the first vector:
#include <iostream>
#include <algorithm>
#include <sstream>
#include <cstring>
#include <vector>
#include <cstdio>
[Code] ....
However, when I print out the values stored by the pointer vector, the first 2 values are not the same as what the input was. I have tried it with 4 - 10 values and always, the first 2 are not the same as the input but the rest are. I tried printing out the values as they are stored in the vector in the first for-loop and it seems to contain them all, but after that first for-loop, when I try to print *station.front(), it is now changed to something else.
input:
4
1231 234354 4544343 121312
output:
34144320 0 4544343 121312
input:
6
123 2435 353 12221 356567 4544452
output:
21704768 0 353 12221 356567 4544452
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Mar 31, 2012
I wrote most of a gui using clutter, using tons of global variables.
Clutter has a function which you use to connect an event or action like a mouse click to a function, and lets you pass one user data variable to it.
I wanted to eliminate globals. So I put everything in a struc to pass to each function, and after a few hours of doing all of this, I thought I almost got it working, but it's not the case.
I have this in the main
Code:
for (int i=0; i < 8; ++i )
clutter_actor_add_action(MV_CL_GUI.Actor_Wav[i], MV_CL_GUI.Wav_Action[i]);
which causes an error attempted to read or write protected memory.
When I comment that line out, the gui at least comes up, but as soon as a mouse event launches a function, the program crashes and gives a Debug Assertion Failed...click retry.
Then it points to a line in dbgdel.cpp
Code:
/* get a pointer to memory block header */
pHead = pHdr(pUserData);
/* verify block type */
_ASSERTE(_BLOCK_TYPE_IS_VALID(pHead->nBlockUse));
Here is what my struct looks like.
Code:
struct Clutter_GUI {
string ProjectName;
ClutterActor *Actor_Enter_Source_Bar;
ClutterLayoutManager *Actor_Source_Directories_Box_Layout;
int Source_Row_Selected;
ClutterAction *Action_Track_Row_Rect[12];
[code]....
Except it has about 5 times as many variables in it. And I am accessing all of the members just using object dot member syntax.
here is an example of the functions used to connect functions to events or actions.
Code:
g_signal_connect ( MV_CL_GUI.Action_Root_Row_Rect[1], "clicked", G_CALLBACK (Root_Row_1_Clicked), &MV_CL_GUI);
The last parameter is the struct I am passing to the function.and my functions look like this.
Code:
void Root_Row_1_Clicked (Clutter_GUI_Object MV_CL_GUI) {...}
But when I launch a function not with g_signal_connect, I don't use the &,
Code:
play(MV_CL_GUI)
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Mar 17, 2014
I finished my project and it does work, but every time I hit enter to end the program I get an error that says my variable array is corrupted.
here is my code:
#include <iostream>
#include <ctime>
using namespace std;
int main() {
system ("color C");
[Code] ....
How could I stop this end error from occurring?
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Apr 26, 2012
My project is say that it has memory leaks. When I view it in the debugger, it shows the correct values being passed to the pointers.
Code:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
bool ConfigGetEntry( char *pcFile, char *pcNameMust, char* &pcResult ) {
char pcBuffer[ 512 ];
[Code] ....
Its saying that i have memory corrupting at..
Code:
if ( !ConfigGetEntry( pcFile, pcName, pcRet ) ) return _strdup( pcDefault );
Also is it normal to have a bad pointer then point data into it to then clear that of the bad pointer. To have valid data now in that pointer.
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Dec 15, 2012
The application that I ported from 32 bit linux to 64 bit linux is crashing due to unknown memory corruption Also some time teh address is printed in 32 bit only as below
this=0x6787e0
any reason why this is happening?
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Dec 22, 2014
Im having a problem with the below code within a console app, I am copying and pasting data across server locations, the copy works fine but it looks like the app wont close and I am left with the screen (Shown in attachment). I want to run this in part of a batch process but because the app stay open it wont move onto the next task.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
namespace SQL_Backup_Move_Files {
[Code] ....
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Nov 6, 2012
Consider the following code which closes an overlapped I/O serial handle during application shutdown.
Code:
Win32Com.CancelIo(hPort);
Win32Com.CloseHandle(hPort);
It works fine under .NET 2.0 but after switching to .NET 4.0 it crashes on the CloseHandle. Removing CancelIO doesn't work.
What the correct way is to close an overlapped I/O handle? And why is there the difference between NET2.0 and 4.0?
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Feb 9, 2014
Currently I am trying to convert RGB to HSL. Everything is working but the saturation value. It is always close to the correct value (usually less than 10 off). For example:
RGB:(196,72,84)
HSL:(354,-46,52)
Correct HSL(354,51,53)
CODE:
double s=0;
double l=0;
chroma=max-min; //works correctly
//LIGHTNESS
l=(max+min)/2;
//SATURATION
if(chroma==0) {s=0;}
else {s=chroma/(1-fabs(2*l-1));}
s=s*100.000000;
l=(l/255.000000)*100.000000;
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Dec 10, 2014
I've been doing some looking and this example seems like the common way to remove the close button on a wpf window. Other than catching the on_click event or using that example, is there no better way to disable/remove that button?
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Nov 9, 2012
My 'c' program reads each line of a .txt file, makes a few changes and then outputs the line of text (which are names). I want the contents to be sorted and did not want to bother writing my own sort. The program runs in a command prompt from inside a batch file for example:
sort | makelist.exe BluRay1.txt > sorted.txt
sort | makelist.exe Dvd1.txt >> sorted.txt
..etc..
I have to supply a ctrl-z manually to close the piping. I tried the following which did not work.
buffer[0] = 26;
printf("%c",buffer[0]);
//printf("^(z)");
fclose(stdout);
fclose(stdin);
I never got the above to work so I am avoiding piping and just do a redirect instead.
makelist.exe dvd1.txt > unsorted.txt
makelist.exe dvd2.txt >> unsorted.txt
sort < unsorted.txt > sorted.txt
..etc.
Just wondering if I could have gotten the ctrl-z thru the pipe using "C".
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Jun 11, 2013
I wanted to stop the user from having access to USB flash drive while my program is reading data from it.I thought i could do so by closing the explorer at the start of my program and reopening it at the end of it.C Code to close and reopen the explorer?Or how to ban access to the USB flash drive?
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Feb 11, 2015
FileStream obj = new FileStream(System.Convert.ToString(row.Cells["Lec_media"].Value),
FileMode.Open, FileAccess.Read, FileShare.Read);
if (Startdate2 == JCM_NOW2) {
if (checkBox1.Checked == true)
[Code] ....
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Apr 19, 2013
So I'm going through and trying to do a recursive implementation of a Heap. I keep getting access violations for some reason on my sifts (_siftUp) - even though I'm trying to insert into sub[0] (currSize = 0 in the constructor). I don't think either of my sifts are implemented correctly, are they?
Here's my Heap:
Code:
#ifndef HEAP_H
#define HEAP_H
//**************************************************************************
template<typename TYPE>
[Code].....
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Jun 3, 2012
If I have an array, and want to make a heap tree out of it using make heap and sort heap, how would I do it? I'm struggling because I didn't take any course in data structure.
I tried googling stuff and I got to the following:
Code:
#include <algorithm> // for std::make_heap, std::sort_heap
template <typename Iterator>
void heap_sort(Iterator begin, Iterator end) {
std::make_heap(begin, end);
std::sort_heap(begin, end);
}
The thing is, I don't know what's the "Iterator" doing exactly and what's begin/end, how can I use arrays with the former piece of code?
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Jan 11, 2015
i want to create customize close/maximize/minimize button wpf. How can i do that?
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Jan 29, 2012
I know that memory addresses in the stack can contain either values or references to other memory addresses, but do these memory addresses also contain methods or are the methods themselves located in the heap?
The confusion comes from the fact that in C# a delegate variable can be assigned either a method's identifier, an inline function, a lambda expression, or a new instance of the delegate type with the method's identifier passed as an argument to the constructor. My guess is that assigning the method's identifier directly to the delegate variable is just a simplified way of calling the delegate type's constructor with the method's identifier as an argument to the parameter, something that the compiler handles for you.
But even in this last case, the delegate variable is said to point toward the method itself. In that case, does it mean that methods are stored in the heap, just as reference type values are?
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Feb 6, 2014
I am creating a class that has a private array on the heap with a constructor that takes the size of the array and initializes it on the heap. Later I have to make a deconstructor delete the space and print out free after.In my code, I was able to heap a private array and make a deconstructor, but I don't know how to take the size of the array and initialize it on the heap. My guess is this:
int* size = new int();
Also when you initialize size on the heap, don't you also have to delete it too? If so, where, in the code, do you do that? Here is my code so far.
Class Student {
private:
int size;
int* array = new int[size];
public:
Student(); // Constructor
~Student(); // Deconstructor
[code]....
How do you make a constructor that takes the size of the array and initializes it on the heap
Student::~Student()
{
delete[] array;
cout << "Free!" << endl;
}
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Jul 10, 2013
10,11,20,1512,22,24,19,22
i want to write a c++ program to build min heap which gets above values from user. remember this program should not alloduplicate values to enter. it should discard duplicate values.
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Sep 16, 2014
I recently posted a question related to creating a heap template class. The ultimate goal is to create a series of classes that serve a purpose that was overlooked in the Qt library that I need for my current project.
The current "end goal" is a PriorityQueue template that uses a comparer class which is inherited from a "template interface". Basically a pure virtual class template. Perhaps that is the mistake to begin with but hopefully not. (Is this a valid approach?)The problem I am getting is that when I compile the code, it says my derived comparer class is abstract.
I will include all related classes here. I doubt it is relevant but the templates and the classes based off them are in different namespaces.Here is the comparer "template interface":
// in global namespace
template<class T>
class IIMQOBJECTS_EXPORT IQComparer {
virtual int compare(T& a, T& b) = 0;
virtual bool equals(T& a, T& b) = 0;
virtual bool isGreaterThan(T& a, T& b) = 0;
virtual bool isLessThan(T& a, T& b) = 0;
};
Here is the class that is supposed to be non-abstract but isn't recognized as such:
// in the application namespace AND IN SAME project that has the NetEventInfo class
// all functions ARE defined/implemented in a cpp file
class APPCORE_EXPORT NetEventInfoComparer : ::IQComparer<NetEventInfo*> {
public:
NetEventInfoComparer();
~NetEventInfoComparer();
[code].....
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