I have an MFC program created from the app wizard. It is an MDI program, reading/writing text files using Serialize. I can read the document and know that the entire document was read into my buffer without any errors. This was verified by compaing the number of bytes read with the file length.
How do I get the document to display in my main/child window?
How do I read the document from the window so I can save it back to the file?
How to create .cpp file (new class) that will handle all the random number generators (<random> library) that main could possibly access. When I looked for a way how to implement random generators the examples were always in the main function or in a class in the main.cpp (with no header file and the generator was not seeded as I imagine it should be = only once in a program).
Questions follows after this malfunction code.
main.cpp #include "randomizer.h" int main() { Randomizer randObject(0, 10, 125); //Set bounds and seed generator int mainVar = randObject.getRandInt(); //Store newly generated random number for future work
[Code] .....
1) So I think that I should somehow declare these generators and distribution in the header file. Is it like declaring int a;?
I tried writing std::default_random_engine defGen; into the header file which only silenced compiler's errors but defGen wasn't seeded.
I have seen some examples using auto a = randInt(defGen); (or maybe with the use of auto a = std::bind.... But what does auto represent? I can't use it in the header file.
2) Can I ensure that the randObject is seeded only once? If for examle I need randObject2 with different boundMax, can I still use the same defGen which was seeded the first time? That should ensure better "randomness" through the program, shouldn't it?
3) Is there better way (and easy too) to "interface" random number generators? The class in the end should provide "get" function to acces int, double, bool, signed/unsigned... or some other specialities like random prime numbers, etc.
If it is anyhow related I am using Code::Blocks IDE with GCC compiler (4.7.1)
having problem passing arguments between main and a function.
I would like to pass three values to a function, have it calculate a 2D matrix and return it back to main. I would like it to accept variable matrix size. Here is my code:
Is it possible to pass a class pointer as memory buffer across the socket? The above code is just an example. My question in general is, whether it's possible to pass any Classes pointer as a memory buffer across sockets.
I'm writing an ActiveX control. In one of the functions I'd like the user to be able to pass me a pointer to a buffer that they created which I can then fill with data and return a success/error code. What's the appropriate way to do this? I was thinking about just using an OLE_HANDLE type for the parameter and then casting that to pointer inside the OCX but I'm not sure if that's safe or the right way to do it.
I am doing an project in SDI. I have two functions name sendtext(CString str) and displaytext(CString inr) both in different class. I have a pointer name pView to send the string str to function "displaytext". The problem is after some operations i get a text in str and i send that text to display text in the output screen i get the text and wen the second text comes to "displaytext" the former text disappears and the latest string only present. How can i display both the text in the output window on ClistCtrl class.
I am attaching a sample project. Basically what this project does is that I initialize a variable map<CString, bool*> m_mapTest in CView::OnInitialUpdate and then pass the variable to CDocument class. On the other hand, within the function OnSaveDocument defined in CDocument I check m_mapTest. To my surprise, the CString part of m_mapTest is correct but the bool* part of m_mapTest is wrong(I pass an array of bool in CView::OnInitialUpdate).
I have a DLL developed using pure VC++ (all unmanaged code that doesn't use .NET framework). This DLL will be deployed in different client PCs within a network and will act like an agent.
Now I have establish a communication between this DLL and a WCF web service, that will be deployed in a server PC. The Service will first get a list of PCs either name or IP Address within a network using LDAP (Active Directory) and once, we get the PCs, I have to establish a communication between the web service and the agents that reside in these client PCs,
I'm using the Visual C++ Express 2008 and i need to pass as parameters to a function characters coded in UTF 8. My environment is Windows 7. The editor of the VC++ write in UTF 8 or UTF 16? If it writes in UTF 16 how can i change it?
I've been thinking over this for long time... For example, when a button is clicked, print a string "clicked" after 5 seconds. (the button won't be blocked)
If a class A contains an array of objects of another class B.. And in the constructor of A, while constructing objects of B, any one object throws an exception, then how can we guarantee to release all the memory acquired.. so that there is no memory leak..
class B{}; class A{ public: B Array[100]; ... };
In the above code, if in constructor of A, suppose 99 objects of B are constructed successfully, but 100th object throws exception, then how can we guarantee to release all the memory acquired by the other 99 objects?
I have a game that I'm trying to create but I don't really know how to handle mouse motions yet. I have read the LazyFoo.net lesson 9. And I have too searched around on Google but haven't find any good article for what I want to do
But what I want is to check if the mouse is OVER the START button of the game and if the user has pressed the LEFT mouse button the game should START.
This works when I am hovering over the area there I want the mouse to do something:
Code: else if (event.type == SDL_MOUSEMOTION) { if (event.motion.x == 0) { quit = true; } }
I do not know how to check this. The START and QUIT button is in the middle of the screen and I don't know how to position the mouse there either.
I am using SDL 2.0. But I don't know how to handle mouse input. Do you think you can explain of how to do that? Or give me a link that explains that really great?
I know how to handle a mouse button that presses down for a sec.
Code: if (event.type == SDL_MOUSEBUTTONDOWN){ if (event.button.button == SDL_BUTTON_LEFT){ // Do something . . . } }
But not how to handle the mouse input of what the mouse is hovering over and that.
Like in a start menu of a game. I want a button for example to appear blue when I hover over it and when I click on it. It should start the game for example.
I have an application that uses an array of threads to call a method along with thread.join(). I was just wondering what would be the best way to handle the thread in case if one of the thread fails? Should I put a try catch block on the method that is being called or should I put the try catch block on the array of threads, or is there any other proper way to handle failed threads?
