C / C++ / MFC

How to change color of menu bar of dialog?

9-Oct-09 12:25

What you probably need is a numerical algorithm for computing the incomplete Gamma function. See section 6.2 of "Numerical Recipes in C" [^].
Smile | :)

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includeh107-Oct-09 10:50

includeh10

7-Oct-09 10:50

How to change color of menu bar of dialog?

Re: How to change color of menu bar of dialog?

«_Superman_»7-Oct-09 13:46

«_Superman_»

7-Oct-09 13:46

Get the handle to the menu using GetMenu[^] or GetSubMenu[^].
Call SetMenuInfo[^] to set the brush used to paint the menu.
Set the required brush color in the hbrBack member of the MENUINFO[^] structure.
Finally call DrawMenuBar[^] to redraw the menu.

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

Microsoft MVP (Visual C++)

Using FormatMessage function

dipuks7-Oct-09 8:57

dipuks

7-Oct-09 8:57

Hello

Looking at different examples online, it all says the lpBuffer parameter has to be
a LPVOID (LPSTR).

Is it possible to allocate a fixed memory buffer like a,

char pBuffer[512];

In that case do i need to call LocalFree() function?

Can anyone show me how to use that? I wanted to make sure i allocate the memory on compile time rather than on run time.

Re: Using FormatMessage function

Nemanja Trifunovic7-Oct-09 9:11

Nemanja Trifunovic

7-Oct-09 9:11

If you don't set dwFlags to include FORMAT_MESSAGE_ALLOCATE_BUFFER you can allocate the buffer yourself on the stack and not call LocalFree() to release it.

On another hand, how do you know the message will fit into 512 bytes?

utf8-cpp

Re: Using FormatMessage function

wangningyu7-Oct-09 17:31

wangningyu

7-Oct-09 17:31

I agree with Nemanja Trifunovic.In accordance with his idea,you can refer to the following codes:

LPVOID   lpMsgBuf; <br />
FormatMessage(   <br />
        FORMAT_MESSAGE_ALLOCATE_BUFFER   |   <br />
        FORMAT_MESSAGE_FROM_SYSTEM       |   <br />
        FORMAT_MESSAGE_IGNORE_INSERTS, <br />
        NULL, <br />
        GetLastError(), <br />
        MAKELANGID(LANG_NEUTRAL,   SUBLANG_DEFAULT),   //   Default language <br />
        (LPTSTR)   &lpMsgBuf, <br />
        0, <br />
        NULL   <br />
); <br />
// Process any inserts in lpMsgBuf. <br />
// ... <br />
// Display the string. <br />
MessageBox(NULL, (LPCTSTR)lpMsgBuf, "Error", MB_OK | MB_ICONINFORMATION); <br />
<br />
// Free the buffer. <br />
LocalFree(lpMsgBuf);

Producer consumer problem

sandeep80147-Oct-09 8:31

sandeep8014

7-Oct-09 8:31

Producer-consumer problem on a circular buffer. Multiple producer and multiple consumer threads may be running concurrently using either semaphores or a combination of mutexes and condition variables.

Re: Producer consumer problem

Maximilien7-Oct-09 9:28

Maximilien

7-Oct-09 9:28

yes.

This signature was proudly tested on animals.

Re: Producer consumer problem

CPallini7-Oct-09 10:11

Re: Producer consumer problem

7-Oct-09 10:11

Yes and the kernel is preemptive, and today is the 'dumb people making pointless posts' day. Roll eyes | :rolleyes:

Rajesh R Subramanian8-Oct-09 6:40

Rajesh R Subramanian

8-Oct-09 6:40

I would actually even try a SRW Lock, but then since this case might require FIFO (SRW Locks are not FIFO, and the algorithm isn't "fair" either), a CRITICAL_SECTION is the best option. I'm assuming that this is all happening within the same process, but if not, you could use a Mutex.

It is a crappy thing, but it's life -^ Carlo Pallini

programming using named pipes

sandeep80147-Oct-09 8:29

sandeep8014

7-Oct-09 8:29

A program (server) that reads a single number as input, searches the file for a line with the input integer as the serial number and writes the proverb or the short quotation as output. If the number is not found in the file, the program should return some default message of your choice.
A program (client) which asks the user to enter a number and outputs the same
Is it possible to connect the client and the server programs with a named pipe so that the client can display the output from the server program.

Re: programming using named pipes

CPallini7-Oct-09 10:05

7-Oct-09 10:05

Yes, it is possible. Smile | :)

Columns with checkboxes

burslem20017-Oct-09 4:45

burslem2001

7-Oct-09 4:45

Hello,

I have a question concerning VC++ and columns and checkboxes. This I'm assuming
is a common hurdle to jump when building a GUI.

I want to to have a graphical interface that shows a list of columns.
The first column, describes the item the following columns could A,B,C etc but are
"checkbox" columns that will profile the item in the first column.

I went down the merry path of looking into CListControl in MFC that has a column
and by setting the style to CHECKBOX you can have a single item with one checkbox,
nice to know. Not what I need.

Datagrid looks like that is what I need, but I dont see this in MFC.
Can somebody point me to an example and even tell me if this is what I need.

Thanks in advance,
Garyc

CPallini7-Oct-09 6:29

7-Oct-09 6:29

Have a look at this article [^].
Smile | :)

burslem20017-Oct-09 7:34

burslem2001

7-Oct-09 7:34

Much appreciated. I will have a gander at this.

David Crow7-Oct-09 11:00

David Crow

7-Oct-09 11:00

I've used XListCtrl, from here at CP, many times.

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Two groupbutton with radio buttons on same dialog

Rolf Kristensen8-Oct-09 9:04

Rolf Kristensen

8-Oct-09 9:04

You can use the subitem-image to display the checkbox. Just copy the state-images to the official image-list, and react to mouse-click on the subitem-image to change the checkbox.

I have implemented this on CGridListCtrlEx - Grid Control Based on CListCtrl[^]

johnjitu7-Oct-09 3:59

Re: Two groupbutton with radio buttons on same dialog

7-Oct-09 3:59

Hello

Every body

Please help me ,i am stuck with this problem

I have created two groupboxes and with radiobuttons on the same dialog .My problem is that the functions of radiobutton of one group is mixed with another and i cannot operate them indepentl

Thansk in advance

Code-o-mat7-Oct-09 4:06

Code-o-mat

7-Oct-09 4:06

I'm not sure i understand you correctly but in resource editor, give the "Group" (WS_GROUP) style to the first radio button in both of your "radiobutton-sets".

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <

Re: Two groupbutton with radio buttons on same dialog

johnjitu7-Oct-09 4:36

Re: Two groupbutton with radio buttons on same dialog

7-Oct-09 4:36

i cannot able to understand u , please explain me

Code-o-mat7-Oct-09 4:55

Code-o-mat

7-Oct-09 4:55

Ok, let's go step by step, did you create your dialog with the resource editor in Visual Studio?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <

Re: Two groupbutton with radio buttons on same dialog

johnjitu7-Oct-09 4:55

Re: Two groupbutton with radio buttons on same dialog

7-Oct-09 4:55

johnjitu7-Oct-09 5:03

Re: Two groupbutton with radio buttons on same dialog

7-Oct-09 5:03

i have create a groupbox and in its property i have saved Group.Is important that to assign any variable ?

johnjitu7-Oct-09 5:16