This is a general question.

I am familiar with accessors and mutators (getters and setters). I have now been reading up on semaphores. I am having trouble finding out differences between...

Does anyone know how to delare a managed class in unmanaged code? This is driving me nuts, because I can call unmanaged from managed, but not the other way. Is there a way to do this? Thanks in...

Thanks all.

MrSpigot, how would I then access the structs through the pointer?

pFoo->test[0].index = blah; does not work. How would this be done?

Thanks.

I have a struct. I want to declare a pointer to that struct. Now I want 10 of those structs. How is this declared? I have tried (call the struct foo for example):

foo* test[10];

when I make...

I have an vs2005 forms application running a thread to constantly try and receive data via ethernet. My problem is once I get the data I want to pass it up through some object oriented layers. When...

I am writing to a text file. Everything is working fine, except I can not figure out how to start a newline. I have tried

fprintf(txtFile, "%s", "\n");
fprintf(txtFile, "%s", '\n');...

what I want is something like this

char buffer[10];
buffer[0] = 0x5F;
TextBox->Text = buffer[0];


i need to cast or a function to convert or something that I dont know about to get the text...

I have a buffer of chars. I want to display them in a text box as hex. is there a simple way to do this? Thanks.

I want to delete a bitmap. How do I do this in c++.

DestBitmap->Save("TempImage2.bmp");
.
.
.
.
.
//later something like
Delete("TempImage2.bmp");

I am drawing on a bit my, then re-loading the bitmap(to erase it) then drawing on it again at 100Hz. I am getting flicker. Is there a way to reduce this flicker? Or a better way to do this than to...

This is the code I use to load the image

Map->Image = System::Drawing::Image::FromFile("test_map1.bmp");
Map->Height = Map->Image->Height;
Map->Width = Map->Image->Width;
Map->Left...

How do you draw on an image in visual studio 2005 and get it to stay? Ive can get it to draw, but it flickers on resize and disappears when the resize is done. Any ideas?

How would one seperate a decimal into 2 numbers, the left and right sides of the decimal?

float example = 131.14567

into...

int left = 131
float right = .14567

thanks.

how?

I am attempting to read a text file.

ifstream indata;
indata.open(filename);
if(!indata)
{
// file couldn't be opened
}
else
{

thanks!

In borland I could place a picture box on the scrollbox and it would take care of scrolling. I was wondering if there is a "scrollbox" to place my picturebox on in windows forms to do the same...

Does anyone know if vs2005 has the borland equivilent of a "scrollbox"? Thanks.

I am trying to run a simple program to read ethernet using UDP. Here is the code, but it always receives -1 for 'error', but I did it by the book. Do you guys see the problem? Thanks.

//enum...

ok, thanks. Also, If I am passing a class into my thread function, and use the same class in a different thread, but a different function of the class, can they operate in parellel, or would I...

When can you determine if you are using too many threads? Assuming I have complete control and mutex locks and what not, when does it slow my program down, rather than speed it up by splitting up...

I am running a thread that does something, then sleeps for a while. If the program closes it continues to sleep to completion. How do I get it to abort immediatly, even if in the middle of...

I am attempting to use a queue. I am doing it just like an example i read. I am doing a vs2005 form applicaiton.

#pragma once
#include <queue>

public ref class DataSource
{
public:...

The problem had to do with the optimization. Once I took it from "maximize speed" to "no optimization" it worked fine. Dont know how that effects everything optimization wise, but for now it will...

It is really basic code, a while(1) in a thread, that calls a function. I have even tried copying and pasting the contents of the function and it skips all that. Tried cleaning, you name it ive...

Has anyone ever seen a function call just get skipped? I am running in debug mode and it wont let me set a break point on the call and when i step to it it goes right over to the next line, no...

is there a way to do this same thing, only with a short.

char buffer[512] = "Hello World";
// allocate memory for the new string
word* ptr = new word[strlen(buffer)+1];
// now copy...

I am trying to put the contents of a char buffer[512] into a word* (type def as data type short). How do I do this? I have tried memcpy but am either getting an exception or it will run but the...

I have a vs2005 forms app, I have added a header file with a bunch of functions, but now i get a bunch of LNK2005 errors, one for every function. How do I resolve this? Do I need to put them in a...

I am using the winsock component in vs2005. I have tried sending and recieving strings. The event of data arriving triggers and runs the following code...

private: System::Void...

In vs2005 there is a winsock component, how do you receive data using the component? I found a ->SendData(blah), but cant find a receive. Does anyone know how to receive with this component? ...

thanks

I am trying to open 2 forms when I start my vs2005 project. The main form, and a second form whose class is created, and then ->show. It shows both forms, but you can control either one. What I...

I have a program with a bunch of threads running. I kill them all at the end of the program. I have stepped through and seen them all abort. Is there a way to see (since I cant when stepping...

I want to read each line of text file and store each line into a giant buffer so I can look at all the contents. How would I do this?

int _tmain(int argc, _TCHAR* argv[])
{
ifstream indata;...

I have a server running using winsock2.h TCP/IP. I open two ports on my pc, and then in a different application connect and send and receive to and from the server respectivly. In my client...

Hit the button too early, I edited it. :)

private: delegate System::Void delegate_function(void);

if(this->InvokeRequired)
{
AsyncCallback ^ac = gcnew AsyncCallback(&WCS::MainForm::delegate_function_callback);
delegate_function ^df =...

I am using the begininvoke and endinvoke methods in visual studio 2005.

private: System::Void button_run_Click(System::Object^ sender, System::EventArgs^ e)
{
...

String^ comPort = "COM" + this->RS232CommPortNum->Value;
int baudRate = Convert::ToInt32(this->cbBaudRate->Value);
com = gcnew SerialPort(comPort, baudRate);

try
{...