C / C++ / MFC Discussion Boards

Adassus22-Jul-09 15:45

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[^]

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

#realJSOP22-Jul-09 23:26

#realJSOP

22-Jul-09 23:26

Maybe he's just a retard.

"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

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

_Maxxx_23-Jul-09 0:17

_Maxxx_

23-Jul-09 0:17

John Simmons / outlaw programmer wrote:
~~Maybe~~ he's just a retard.

FTFY

___________________________________________
.\\axxx
(That's an 'M')

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

_Maxxx_23-Jul-09 0:11

_Maxxx_

23-Jul-09 0:11

you asked before, and got several answers which seemed to be good starting points. I personally defended you from some of those who despaired at your original post. we should be helpful to those trying to learn, I felt.

but you didn't reply to those answers and have just posted essentially the same question again.

So - did you not bother to read those answers? did you not understand them?

If you don't even TRY to help yourself, you're going to find it pretty hard to get help from anyone - and I think you have already outstayed your welcome on CP

___________________________________________
.\\axxx
(That's an 'M')

Schedule events in C

Member 70409922-Jul-09 11:00

Member 704099

22-Jul-09 11:00

Hay,
I looking for open source code in c language which schedule/deschdule a functions that will run in a new threads, so for example I can schedule the function to run every 30 minutes in new tread.
I want to use this source in my program as an infrastructure service.
I prefer using a source which will compiled on Linux and Windows platforms.

Please, any help - link

Re: Schedule events in C

malaugh22-Jul-09 16:10

malaugh

22-Jul-09 16:10

You mean code to create a thread?

just use

DownlinkThread = CreateThread(
NULL, // default security attributes
0, // use default stack size
Func, // thread function
0, // argument to thread function
0, // use default creation flags
&MsgThreadId); // thread identifier

The thread function is

WORD WINAPI Func( LPVOID lpParam )
{
while(1)
{
Sleep(30 * 60 * 1000);
}
return(0);
}

Substitute CreateThread with pthread_create and Sleep with uSleep for the Linux version

Re: Schedule events in C

Member 70409930-Jul-09 10:36

Member 704099

30-Jul-09 10:36

I know how to di it, I looking for more complicated thread events infrastructure which I can schedule to promise order and timing of events.
What aboute to schdule event to run (every 30 seconds, or to kill all created threads in one time.

I looking for the source of it as part of sharing code via the internet, and also learn new ideas.

BTW I found till now the "cheap thread" - a library of portable C routines to implement cooperative multitasking with prioritized scheduling, but they actully not using thread creation.

Any other links?

How to enable the Prev Page button in PrintPreview dialog?

gshen22-Jul-09 9:11

gshen

22-Jul-09 9:11

I created an MFC application and added Printing and Print Preview capability to a CMyFormView derived from CFormView. The problem I have is
that the "Prev Page" and "Zoom Out" buttons on the Print Preview toolbar are
always disabled. The "Two Pages" button and "Next Page" are enabled and work
correctly.

For the Prev Page button, I set CPrintInfo::SetMaxPage() and CPrintInfo::SetMinPage(). However, this doesnt work to enable the Prev Page button. In debug mode, I could see that CPrintInfo::m_nCurPage value was corrent within OnPrint() method when the program is in print preview. Anybody knows how to enable Prev Page button in Print Preview dialog?

Thanks

Sheng

creating a text menu from an ini file in C

alleyes22-Jul-09 8:40

alleyes

22-Jul-09 8:40

I have to have a list of choices in a text menu for a console app in C. The text menu is to be populated from strings read from an INI file.

Anyone ever done anything like this?

For example:

[Model-A]
1="XYZ, Location = ABC"
2="GHI, Location = DEF"

I want to read the section then populate some strings based on the number of keys read. The string then is parsed using the string delimiter.

Appreciate the help.

Jer 29:11

Re: creating a text menu from an ini file in C

Adam Maras22-Jul-09 8:50

Adam Maras

22-Jul-09 8:50

Well, if you're doing any of this in C++, CodeProject has quite a few good examples[^] to get you started. Otherwise, I'm sure someone[^] has come up with a solution Smile | :)

Adam Maras | Software Developer
Microsoft Certified Professional Developer

Re: creating a text menu from an ini file in C

alleyes22-Jul-09 9:05

alleyes

22-Jul-09 9:05

I do have an IniFile Class but the majority of code is ANSI C. I have an INI file that is read and choice are presented to the user with a static text menu. If the INI file changes (grows) then I have to rev. code. I would rather rev. the INI file.

Jer 29:11

Re: creating a text menu from an ini file in C

Maximilien22-Jul-09 9:35

Maximilien

22-Jul-09 9:35

your issue(s) is/are with

a) reading the INI file ? (see How to read and write an INI File[^])
b) creating a text based menu ? (see Text-based menu class for Console Applications[^]
c) all of the above ?
d) none of the above ?

This signature was proudly tested on animals.

Re: creating a text menu from an ini file in C

alleyes22-Jul-09 10:18

alleyes

22-Jul-09 10:18

Choice 'C' but not using C# which the link in choice 'B' is based upon.

Jer 29:11

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