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bubuzzz wrote: I just wonder how p2p apps can work when 2 comps connected directly to each other and one comp is under a shared network
When one of the two peer-to-peer appliacations is inside a private network, you've to configure (manually) the router for NAT.
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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bubuzzz wrote: so, that 's means i have to configure something "manually". Is there any solution by using code? I just wonder how p2p apps can work when 2 comps connected directly to each other and one comp is under a shared network OMG
As long as one of the two peers is not firewalled (incoming connections are not blocked), they can make a connection. If both are in a local network without port forwarding it gets much more trickier, but there are still possibilities (as Skype shows).
/M
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Port forwarding is not possible (see router configuration)?
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yup. That is what i am trying these day. Thanks all for replying me
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How do i generate tables in WORD through code? i am creating an application where i have to create tables depending on the input given. for example, if there are 10 objects there should be 10 rows and each row should have an object.
i was trying some examples in CP. couldnt find any.. if somebody can help me it would be great
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There are actually some goo examples about office automation here at CP [^].
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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Hi Members
I am try to show Message when copy file or folder from windows explorer.Is it possible?
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What do you mean?
There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal
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You want to show the copy operation progress while it is being performed? Take a look at CopyFileEx[^] function, especially the third parameter.
“Follow your bliss.” – Joseph Campbell
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i am not going to copy file folder.If copy function of windows is stsrt then i want to show message.If i use CopyFile function then easily i can show message.
I want to show message when windows copy function is start then.
Plz help me
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There is any more opinion.About this topic.
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Hai,
I am having a C++ MFC Application. I have downloaded the original application from a website Metaqoutes.net.I have modified the program & run the pgm.It is wrkng correctly.that is when i build it & debug it,it is wrkng.But when i go to debug folder & running the Application.Exe it is showing the result of the original exe,i.e my changes r nt reflected in that.I am wrkng on VC++9 bt d original program is VC++6.Please help me
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Check your project settings to see what is the output directory.
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I have a project similar to installation program, which has an uninstall app - I hope the uninstall-app deletes all programs including itself - of course failed because it is in running.
I just wandering why normal installation programs, such as inno, can delete uninstallation program itself? what is deep story inside?
any comments?
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it is interesting, I will do a test.
thanks
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That's a C# article.
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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See here.
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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Please see the code bellow.
#include <iostream>
#include <stdlib.h>
using namespace std;
class Cpolygon
{
protected:
int width, height;
public:
void setvalues (int a, int b)
{
width=a;
height=b;
}
};
class Crectangle:public Cpolygon
{
public:
int area ()
{
return(width*height);
}
};
class Ctriagle:public Cpolygon
{
public:
int area()
{
return((width*height)/2);
}
};
int main(int argc, char *argv[])
{
Crectangle rect;
Ctriagle tril;
Cpolygon *Poly1 =▭
Cpolygon *Poly2 =&tril;
Poly1->setvalues(4,5);
Poly2->setvalues(4,5);
cout<<Poly1->area()<<endl;
cout<<Poly2->area()<<endl;
system("PAUSE");
return 0;
}
I have two questions.
1.
Cpolygon *Poly1 =▭
Cpolygon *Poly2 =&tril;
What does these two lines indicate?
2. Instead of creating two objects of base class can we use only one object of base class to set the values.
i.e.
Cpolygon *Poly;
So that
Poly->setvalues(4,5); need to call only once and create the objects of derived class and show the outputs i.e.
Crectangle *rect;
Ctriagle *tril;
cout<<rect->area()<<endl;
cout<<tril->area()<<endl;
will it work? 
Thanks for reading.
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Before answering your question, I think there should be a small modification in your code of the Cpolygon class: you should have a virtual area function:
class Cpolygon
{
...
virtual int area() = 0;
};
Otherwise those two lines won't compile:
cout<<Poly1->area()<<endl;
cout<<Poly2->area()<<endl;
First question: you have two pointers to a base class and you make them point to derived classes. This would be more or less similar as this:
Cpolygon *Poly1 = new Crectangle();
Cpolygon *Poly2 =new Ctriangle();
Which is seen more often.
In fact the whole purpose of this code is to show you the use of polymorphism (I suggest you google for it to have a lot more examples). The base principle is that you can manipulate objects of different types (Crectangle and Ctriangle) exactly the same way: they all implement a known interface (Cpolygon). This way, you can store them all in a container and you don't need to know which exact type you are manipulating. Each time you call a virtual function (like area()), it will be "redirected" to the correct type. This is one of the most basic and fundamental principle of object oriented programming.
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A new comers' reply:
For question 1:
Try the step below:
Add "virtual int area() =0;"(of course it is a public member) in the definition of class Cpolygon.
For the lesson, search virtual class on the Internet.
For question 2:
I admire your imagination.
It is possible, but not in your way.
See the use of "constructor". Especially "default constructor."
With ears and eyes.
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I'm in the process of making a simple 2D game and I'd like to put my three rows of circles into three loops where 15 are drawn and translated over 28 units for each time, but I've been running into some issues. Could I get ya'll to take a look at my code and explain what I'm doing wrong? Here's my code:
int Circle1 [20];
for
(Circle1=0; Circle1<15; Circle1++)
{
glPushMatrix();
glTranslatef(d+28,455,1);
random_generator(0,3);
if (randomValue == 0)
{
glColor3f(0,.5,0);
}
else if (randomValue == 1)
{
glColor3f(.5,0,0);
}
else
{
glColor3f(0,0,.5);
}
glLineWidth(1.0);
drawCircle(14,200);
glPopMatrix();
}
when I compile it I get errors for the
(Circle1=0; Circle1<15; Circle1++)
line of code saying:
In function 'displayFunction':
error: incompatible types when assigning to type 'int[20]' from type 'int'
warning: comparison between point and integer
error: lvalue required as increment operand
Ultimately I'm making a game in which you use a cannon to shoot the same color circles, you'll have a five minute timer to get rid of them all. There will be three rows of circles, with one of three randomly generated colors (red, blue or green). I got my random color generation working, but since I had it on every circle in the drawfunction the colors were changing everytime the screen refreshed. So I need to put the random color generation in my main function and use an array to point at my drawCircle function. However I thought it might be easier if I drew my circles with a for loop. It's 15 circles per row and I had been planning on doing three loops so I only had to worry about the x component.
What I was trying to do with that piece of code was to draw my 15 cicles, keep the y component and translate the x component over 28 units for each circle so you have:
OOOOOOOOOOOOOOO
a row of fifteen side by side circles
modified on Wednesday, December 9, 2009 3:01 AM
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It might help if you described the trouble.
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Apologies, when I compile it I get errors for the
(Circle1=0; Circle1<15; Circle1++)
line of code saying:
In function 'displayFunction':
error: incompatible types when assigning to type 'int[20]' from type 'int'
warning: comparison between point and integer
error: lvalue required as increment operand
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