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 of course you are first. 
Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )
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Have a look at the boost graph library. For quidance try ISBN 0-201-72914-8: The boost graph library user guide and reference manual; I recommend it.
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Hi,
Has anyone come across a simple way of making an MFC toolbar button flash? I tried using pCmdUI->Enable() with an alternating enable/disable flag which looked great but of course the button is disabled half the time 
TIA
Tony
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How about alternating checked/unchecked?
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <
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Hi,
Thanks for the suggestion. I tried it and it looked OK but still not quite what I wanted. For info, I did manage to get the look I was after but I dont know if its the "correct" way to do it. I created two versions of the toolbar bitmap each showing the two states I needed. I loaded them into two image lists in CMainFrame::OnCreate(). I then swapped the image list into the toolbar on a timer, like this...
CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
...
m_il1.Create(IDR_MAINFRAME1, 32, 0,RGB(128,128,128));
m_il2.Create(IDR_MAINFRAME2, 32, 0,RGB(128,128,128));
...
}
CMainFrame::FlashToolbarButton()
{
static bool bSwap = true;
if(bSwap)
{
m_wndToolBar.GetToolBarCtrl().SetImageList(&m_il1);
bSwap = FALSE;
}
else
{
m_wndToolBar.GetToolBarCtrl().SetImageList(&m_il2);
bSwap = TRUE;
}
m_wndToolBar.Invalidate();
}
Probably very ugly - maybe someone else has a more elegant solution. 
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How about an owner drawn toolbar[^]?
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <
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The code below produces the following compiling error:
STS_OP_temp_test.cpp: In constructor 'STS_OP_temp_test<U>::STS_OP_temp_test()':
STS_OP_temp_test.cpp:66: error: expected primary-expression before 'int'
STS_OP_temp_test.cpp:66: error: expected `;' before 'int'
I take the error to mean that the compiler can't resolve "cwtm.templateMethod". Either it doesn't think "cwtm" is defined, or it doesn't think cwtm has a method called "templateMethod".
If you don't quite understand the class template stuff happening here, go to this site:
http://publib.boulder.ibm.com/infocenter/comphelp/v8v101/index.jsp?topic=/com.ibm.xlcpp8a.doc/language/ref/template_template_arguments.htm
But that site doesn't solve my problem.
Thanks for your help.
#ifndef STS_OP_temp_test_HPP
#define STS_OP_temp_test_HPP
#include <typeinfo>
#include <iostream>
#include <string>
//------------------------------------------------------------------------------
template <typename T = int>
class Class_with_template_method
{
public:
//--------------------------------------------------------------------------
Class_with_template_method()
{}
//--------------------------------------------------------------------------
template <typename P>
void templateMethod()
{
std::cout << "Method template is of type: " << typeid(P).name() << std::endl;
}
};
//------------------------------------------------------------------------------
template <template<class T> class U>
class STS_OP_temp_test
{
public:
//--------------------------------------------------------------------------
STS_OP_temp_test()
{
cwtm.templateMethod<int>(); // Line 66 compiling error!!!
real_cwtm.templateMethod<int>();
}
U<int> cwtm;
Class_with_template_method<> real_cwtm;
};
int main()
{
STS_OP_temp_test<Class_with_template_method> C();//*/
return (1);
}
#endif
<div class="ForumMod">modified on Saturday, February 28, 2009 1:21 PM</div>
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I've done some more testing and uncovered something interesting. The template method being called will work if the template parameter is not explicitly specified.
See the addtional method added to Class_with_template_method, "templatePassedIn". And the modified STS_OP_temp_test constructor.
#ifndef STS_OP_temp_test_HPP
#define STS_OP_temp_test_HPP
#include <typeinfo>
#include <iostream>
#include <string>
//------------------------------------------------------------------------------
template <typename T = int>
class Class_with_template_method
{
public:
//--------------------------------------------------------------------------
Class_with_template_method()
{}
//--------------------------------------------------------------------------
template <typename P>
void templateMethod()
{
std::cout << "Method template is of type: " << typeid(P).name() << std::endl;
}
//--------------------------------------------------------------------------
template <typename D>
void templatePassedIn(D p_passed)
{
std::cout << "Method template is of type: " << typeid(D).name() << std::endl
<< "And has value: " << p_passed << std::endl;
}
};
//------------------------------------------------------------------------------
template <template<typename> class U = Class_with_template_method >
class STS_OP_temp_test
{
public:
//--------------------------------------------------------------------------
STS_OP_temp_test()
{
cwtm.templatePassedIn(6); // works
cwtm.templatePassedIn<int>(6); // ERROR !!!
cwtm.templateMethod<int>(); // ERROR !!!
//------------------------------------------------------------------------------
real_cwtm.templateMethod<int>(); // works
real_cwtm.templatePassedIn(6); // works
real_cwtm.templatePassedIn<int>(6); // works
}
U<int> cwtm; // Care about template type
Class_with_template_method<> real_cwtm;
};
int main()
{
STS_OP_temp_test<> B();
return (1);
}
#endif
<div class="ForumMod">modified on Saturday, February 28, 2009 1:58 PM</div>
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It's because there's no way for the compiler to tell when it's doing syntax checking that U<int>.templateMethod is a template function. So, you have to tell it, like so:
cwtm.template templateMethod<int>();
This compiles OK with gcc 4.0.1.
Interestingly, VC++9.0 doesn't care either way - it's happy to compile your original code or the variant with template added in.
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
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Awesome! That worked. Thanks you very much.
So, if I owned a copy of the C++ Standard, would I have found the answer there?
How did you know this?
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jim258kelly wrote: So, if I owned a copy of the C++ Standard, would I have found the answer there?
Possibly - the standard can take some decoding at times (yes, I have a copy). I don't know, I didn't look at the standard.
jim258kelly wrote: How did you know this?
Deduction really - you have to think 'what can the compiler infer, given what it knows'. You've told it that U is a template class, taking a single parameter. So when you assert that it has a member 'templateMethod', that's fine - it's willing to accept that. But when you add the '<', what does it mean? There are two options - it could be a less than operator or it could be a template parameter clause introduction - there's ambiguity. So, to disambiguate, either the compiler gets cleverer (looks like VC++2008 has done that) or you have to explicitly tell the compiler that 'templateMethod' is a template.
With templates, the two things that most often come up are 'can the compiler tell that this symbol is a template' (the case you had) or 'can the compiler tell this is a type', at which point you need to add a 'typename' qualifier, similar to the 'template' one. Consider the (contrived) code below. Without the 'typename', it won't compile (not with g++, anyway) because the compiler can't know that A::size_type is actually a type.
#include <vector>
#include <iostream>
template <class A>
struct GetSize
{
typename A::size_type operator()(A const& a) { return a.size(); }
};
int main()
{
std::vector<int> a(10);
std::cout << GetSize<std::vector<int> >()(a) << std::endl;
}
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
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I am trying to update my resource dll's string table at run time.
That means i want to expose my string table to the end user.
He should be able to update that file before the start up of the application.
And the updated strings should be displayed by the GUI.
One approach that i found is to read from the disk file each time i display string in the GUI.
However that makes my application slow.
I want that at the start up of the application, first it should update its resource dll based on the string table contained on a txt/csv file. And afterwards it should use strings stored in that dll for all its operations.
Please suggest me what can be the other optons to try with.
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Check out UpdateResource[^] for starters.
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <
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Hi,
I have problem with Picture control in my project. I am using 3 dialogs. When I put Picture control on my dialog and set properties: Type to Icon, Image is icon ID from resource so I see icon icon in the Picture control - everything looks ok.
But when I build the program so I see different icon in the Picture control - I see a cursor icon(white arrow with question mark) instead of my icon from resource.
This is definition of Picture control from my resource:
ICON IDI_ICON2,IDC_STATIC_ICON,181,154,20,20,0
The value of IDI_ICON2 is 112
I tried create a new project with one dialog box. It was working without any problems.
What am I doing wrong.
Thanks.
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No idea what could be wrong there but did you try changing the value of IDI_ICON2 from 112 to something else, for example to 1000?
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <
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Hi,
thanks for reply.
When I changed the value to 2000 so I see nothing. There is no icon.
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Clean and rebuild your project and see if anything changes.
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <
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I cleaned the solution and rebuilt that againt - It's same - I see nothing.
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I see...did you maybe -by mistake- add your icon as cursor resource instead of icon resource, or maybe selected cursor -if possible- instead of icon for the picture control? Does the arrow with questionmark cursor thing appear again if you change the ID back to 112? I did some look around and 112 seems to be the resource ID of the standard "arrow with questionmark" mouse cursor, so my guess is that someone somewhere loads a cursor instead of an icon.
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <
modified on Saturday, February 28, 2009 2:39 PM
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I checked it all over again - when I change the value to 2000 I see nothing, to 113 I se different cursor(pen).
In the type properties there is value Icon. There are no curors in the my resource. I see the icon in the Icon folder in the Resource viewer(there are no cursors).
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Well, if you don't mind the workaround, i suggest setting the icon from code using CStatic::SetIcon[^] instead of using the resource...that should help, just use LoadIcon[^] or CWinApp::LoadIcon[^] and then set this to your static control. Don't forget to use DestroyIcon[^] once you are done with it. Your dialog's OnInitDialog[^] is a good place for setting the icon.
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <
modified on Saturday, February 28, 2009 3:34 PM
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SendDlgItemMessage(hDlg,IDC_LOGO, STM_SETIMAGE,(WPARAM)IMAGE_BITMAP,(LPARAM) LoadIcon(ghInstance,MAKEINTRESOURCE(IDI_ICON1)));
I see nothing;
GetLasterror returns - The specified resource type cannot be found in the image file.
But this icon - IDI_ICON1 is there because I use it as icon for exe file and for title bar.
I am giving up.
Thanks for you time.
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I am a Novice at c++, and was wondering if anyone knew how to make a program that would count by multiples of 10, and could count up to very large numbers, ex: 500 digits.
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You'll want a 'BigNum' library, like this one[^]. Then your program is as simple as this:
#include <iostream>
#include <gmpxx.h>
int main(int, char**)
{
mpz_class num(10);
while (1)
{
std::cout << num << std::endl;
num += 10;
}
}
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
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Hi All,
I am using a 3rd party dll when i am debuging this dll i am facing a problem the problem is it is skiping the function for example if
there are function in dll suppose
A(); // I WANT TO GET IN TO DEBUG A
B();
But dont know how it is getting in to B.
i am using VS2008 with MFC Feature Pack.
Thanks for any idea or suggestion.
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