Re: Rebuild Solution Takes so much time. - C / C++ / MFC Discussion Boards

Which is faster comparision of string or comaprision of enums ?

Dharmendra Bhargava22-Jul-09 19:22

22-Jul-09 19:22

In my code i have too much comparison of strings, is it not a better idea to associate an enum for each string and compare them ?
Will this be faster or will it be same as string comparison ?
Thanks in advance. Smile | :)

Re: Which is faster comparision of string or comaprision of enums ?

hanq_3891013022-Jul-09 19:32

hanq_38910130

22-Jul-09 19:32

I don't think it's a good idea to associate an enum with every string.
If you use "string" or "CString" class type and two string objects will not have same contents(like string1 == "abc" and string2 == "abc"), you can only compare two string's addresses, like "&string1 == &string2" or "string1 != &string2".

Smile | :)

Re: Which is faster comparision of string or comaprision of enums ?

Stephen Hewitt22-Jul-09 19:33

Stephen Hewitt

22-Jul-09 19:33

Comparing an enum will be much faster.

Steve

Consuming C# webservice in a C++ app

vipin_nvk22-Jul-09 19:05

vipin_nvk

22-Jul-09 19:05

Hello

I need to build a C++ MFC application which would consume a C# webservice, could anybody provide some references for the same. I have found an article in CP which says we need SOAP toolkit for the same, is that the only option or do we have any other alternative.

Thanx

Re: Consuming C# webservice in a C++ app

Stuart Dootson22-Jul-09 19:42

Stuart Dootson

22-Jul-09 19:42

If the C# webservice is SOAP, then it's easiest to use a SOAP toolkit (for example, gSOAP[^]).

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Rebuild Solution Takes so much time.

Le@rner22-Jul-09 18:35

Le@rner

22-Jul-09 18:35

Hi all,

when i Rebuild Solution after Clean solution than it takes so much time ,please tell me can i reduce this time.

please tell me some suggestion and solution for this.

thanks in advance.

To accomplish great things, we must not only act, but also dream;
not only plan, but also believe.

Re: Rebuild Solution Takes so much time.

N a v a n e e t h22-Jul-09 18:42

N a v a n e e t h

22-Jul-09 18:42

Parsing C++ code is tough and can be slow in huge projects. Here are couple of SO posts which explains some tricks.

1 - Click[^]

2 - Click[^]

Smile | :)

Navaneeth

How to use google | Ask smart questions

Re: Rebuild Solution Takes so much time.

hanq_3891013022-Jul-09 18:54

hanq_38910130

22-Jul-09 18:54

I think you can:

a. Use precompiled header file, put all include files that are used frequently but changed infrequently in it.

b. If possible, include header files in .cpp file, not .h file. For example, if you only use class pointer or reference in .h file, then you can declare this class in .h file, and #include its header file in cpp.

c. If possible, try to reduce dependence between files/classes.

More suggestions could be found on the internet Smile | :)

CreateDirectory() fails in vista os.

KASR122-Jul-09 18:35

KASR1

22-Jul-09 18:35

I am using CreateDirectory() method to create directory in some specified location.
It fails in vista os. I need to know what could be the problem.

Note: The user has adminstrative rights.

Re: CreateDirectory() fails in vista os.

Stuart Dootson22-Jul-09 18:53

Stuart Dootson

22-Jul-09 18:53

Have you tried using GetLastError[^] to get a more detailed error code?

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: CreateDirectory() fails in vista os.

vipin_nvk22-Jul-09 19:03

vipin_nvk

22-Jul-09 19:03

Where are you trying to create the directory, if UAC is enabled and if you try to create in C: or on locations on the flash drive CreateDirectory could fail, in such a case your application has to run with admin rights

Re: CreateDirectory() fails in vista os.

Stuart Dootson22-Jul-09 19:10

Stuart Dootson

22-Jul-09 19:10

Hint: You're better off replying to the guy that actually asked the question rather than me - I was trying to help him, same as you.

vipin_nvk wrote:
in such a case your application has to run with admin rights

He did already say "Note: The user has adminstrative rights"

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

How to use transparency with GDI+?

Adassus22-Jul-09 15:45

Adassus

22-Jul-09 15:45

Hi all,

I'm switching from GDI to GDI+. With GDI, I was able to make the background color transparent using this tutorial.
http://winprog.org/tutorial/transparency.html[^]

I'm looking for a way to accomplish the same thing. I basically wanna turn the color black transparent in my bitmaps. Surely, there has to be a way to do that...

Re: How to use transparency with GDI+?

Prasann Mayekar22-Jul-09 22:36

Prasann Mayekar

22-Jul-09 22:36

first thing:

if u have an image which is having transparent color then gdi+ automatically handles it

otherwise convert the pixel format to PixelFormat32BppARGB

secondly
the A part of ARGB holds the transparency value

change this value for the pixels to be transparent.

enjoy

Re: How to use transparency with GDI+?

Prasann Mayekar22-Jul-09 22:44

Prasann Mayekar

22-Jul-09 22:44

refer to Color class of GDI+

Passing struct in map , vector in C++

resolvequestion22-Jul-09 12:41

resolvequestion

22-Jul-09 12:41

I am using either map or vector to store the data. Now my data is in Struct. How do I store this data coming in...using vector or map....

Thanks!!

Re: Passing struct in map , vector in C++

Stuart Dootson22-Jul-09 13:14

Stuart Dootson

22-Jul-09 13:14

Vector:

#include <vector>

struct Whatever
{
   int x;
};

int Store(Whatever const& w, std::vector<Whatever>& vw)
{
  vw.push_back(w);
}

Map (presuming int as key):

#include <map>

struct Whatever
{
   int x;
};

int Store(int id, Whatever const& w, std::map<int, Whatever>& miw)
{
  miw.insert(std::make_pair(id, w));
}

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Toolbar button bitmap missing

transoft22-Jul-09 12:16

transoft

22-Jul-09 12:16

Hi

I designed a Toolbar class which is derived from CToolBar. The "AddButton" can not load bitmap for the buttons.

bool CMyToolbar::AddButton(int nIndex, UINT Cmd, UINT BitmapResId)
{
    TBBUTTON tb;
    // Command associated with toolbar button
    tb.idCommand = Cmd;
    // Setting button state
    tb.fsState = TBSTATE_ENABLED;
    // Setting button style
    tb.fsStyle = TBSTYLE_BUTTON;
    tb.dwData = 0;
    tb.iString = NULL;
    GetToolBarCtrl().InsertButton (nIndex, &tb);
    GetToolBarCtrl().LoadImages(BitmapResId, AfxGetInstanceHandle());

    return true;
}

Can you help to locate the BUG?

Best regards,

Re: Toolbar button bitmap missing

«_Superman_»22-Jul-09 17:25

«_Superman_»

22-Jul-09 17:25

You probably need to set tb.iBitmap.

«_Superman_»
I love work. It gives me something to do between weekends.

i want to create MFC based project in visual studio c++ 2005 and want to run and see my window(such as add buttons, sample text boxes, and other control objects) that i have write code

goutom roy22-Jul-09 11:09

goutom roy

22-Jul-09 11:09

i want to create MFC based project in visual studio c++ 2005 and want to run and see my window(such as add buttons, sample text boxes, and other control objects) that i have write code.
plz help me. i want to create MFC based project and run..........

Re: i want to create MFC based project in visual studio c++ 2005 and want to run and see my window(such as add buttons, sample text boxes, and other control objects) that i have write code

transoft22-Jul-09 12:25

transoft

22-Jul-09 12:25

Try Wizard(File - New - Project)

Re: i want to create MFC based project in visual studio c++ 2005 and want to run and see my window(such as add buttons, sample text boxes, and other control objects) that i have write code

Maximilien22-Jul-09 14:33

Maximilien

22-Jul-09 14:33

As the other one suggested, using the wizard is a good start.

I suggest you use google to find a good beginner's tutorial; or use your local public library (or book store) to find a beginner MFC book.

This signature was proudly tested on animals.

Re: i want to create MFC based project in visual studio c++ 2005 and want to run and see my window(such as add buttons, sample text boxes, and other control objects) that i have write code

RomanMzh22-Jul-09 17:21

RomanMzh

22-Jul-09 17:21

In Visual Studio 2005:

Click File->New->Project

In the wizard under the visual C++ label you should have "MFC", then on the right side select the most suitable project type you need.

When the wizard is finished hit F5 to compile and run your the test application Visual Studio generated for you. There should be buttons and sample text i believe.

RM

Re: i want to create MFC based project in visual studio c++ 2005 and want to run and see my window(such as add buttons, sample text boxes, and other control objects) that i have write code

chandu00422-Jul-09 19:30

chandu004

22-Jul-09 19:30

13 essential skill in vc++ by steven holzner
is a good book for starters

--------------------------------------------
Suggestion to the members:
Please prefix your main thread subject with [SOLVED] if it is solved.
thanks.
chandu.

Re: i want to create MFC based project in visual studio c++ 2005 and want to run and see my window(such as add buttons, sample text boxes, and other control objects) that i have write code

Michael Schubert22-Jul-09 21:05

Michael Schubert

22-Jul-09 21:05

Have you considered reading the replies you got when you posted this yesterday?

http://www.codeproject.com/Messages/3129404/Re-visual-studio-cplusplus-2005-how-to-open-MFC-project-and-run.aspx[^]

http://www.codeproject.com/Messages/3129412/Re-visual-studio-cplusplus-2005-how-to-open-MFC-project-and-run.aspx[^]

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.