C / C++ / MFC

Re: WM_RELEASEDCAPTURE(tab)

27-Feb-07 2:49

Buttons need to capture the mouse in order to know when the user has released the mouse button so that it can know when to act, and how to draw itself (i.e. pressed or not). If your tabs are not acting as real buttons, there is no need for the tab control to know when the mouse was released.

That is my take on it...

Peace!

-=- James
Please rate this message - let me know if I helped or not!<HR>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
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RaviPK27-Feb-07 17:46

RaviPK

27-Feb-07 17:46

I am aggree with your answer.
But its not given in MSDN that WM_RELEASEDCAPTURE will be fired only when TCS_BUTTONS style is set. Why is it so?
Can you tell me from where I can get more information on this point?
If its given in MSDN it will be more helpful for me. Rose | [Rose]

Datatypes - Urgent

janadhana27-Feb-07 1:42

janadhana

27-Feb-07 1:42

Hi All,
Please help me with these,
I need to know the C++/COM (both included) datatypes that can hold the following types of numbers.
1. Packed BCD --> What datatype can be used to hold these numbers.
2. Packed HEX --> What datatype can be used to hold these numbers.

Please excuse if the Q's are silly, but it will be of great help if i get the answers.

Thanks & Regards,
Dhana

Re: Datatypes - Urgent

James R. Twine27-Feb-07 2:45

27-Feb-07 2:45

Unpack them, and use native types. Smile | :)

   There are no "native" packed BCD/HEX types that I know of for either C++ or automation types.

   I would unpack them in order to pass them across COM boundaries using automation-capable types, like double (VT_R8), and int (VT_I4).

   If you really need to perserve the native binary data, you can allocate a BSTR using SysAllocStringByteLen(...) and stuff the binary data into the allocated memory. This is generally not something for the faint-of-heart, however...

   Peace!

Thread Question

Programm3r27-Feb-07 1:01

Programm3r

27-Feb-07 1:01

Hi all,

After creating a thread:

HANDLE handle;
handle = (HANDLE) _beginthread( ThreadProc,0,&val);

Is it possible to pause the thread or put it in a standby mode?
Thanxs
Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r

James R. Twine27-Feb-07 1:16

27-Feb-07 1:16

   Of course. See the SuspendThread(...) function.

   Edit -- If you are trying to selectively wake the thread up on certain events, create Win32 Event objects, and have the thread wait on them by using functions like WaitForSingleObject(...)/WaitForMultipleObjects(...).

   Peace!

Programm3r27-Feb-07 1:25

Programm3r

27-Feb-07 1:25

Hi, thanx alot James Smile | :)

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r

Newbie0027-Feb-07 1:19

Newbie00

27-Feb-07 1:19

Programm3r wrote:
Is it possible to pause the thread or put it in a standby mode

Yes it is. You can use events:

//The CreateEvent function creates a named or unnamed event <br />
//object. <br />
<br />
HANDLE CreateEvent(<br />
<br />
    LPSECURITY_ATTRIBUTES lpEventAttributes,	// pointer to security attributes  <br />
    BOOL bManualReset,	// flag for manual-reset event <br />
    BOOL bInitialState,	// flag for initial state <br />
    LPCTSTR lpName 	// pointer to event-object name  <br />
   );<br />
<br />
//The SetEvent function sets the state of the specified event object to <br />
//signaled. <br />
<br />
BOOL SetEvent(<br />
<br />
    HANDLE hEvent 	// handle of event object <br />
   );<br />
<br />
//The ResetEvent function sets the state of the specified event object <br />
//to nonsignaled. <br />
<br />
BOOL ResetEvent(<br />
<br />
    HANDLE hEvent 	// handle of event object <br />
   );	<br />
 <br />
//The WaitForSingleObject function returns when one of the following <br />
//occurs:<br />
<br />
//·	The specified object is in the signaled state.<br />
//·	The time-out interval elapses.<br />
<br />
 <br />
<br />
DWORD WaitForSingleObject(<br />
<br />
    HANDLE hHandle,	// handle of object to wait for <br />
    DWORD dwMilliseconds 	// time-out interval in milliseconds  <br />
   );

You can also use these functions:

//The SuspendThread function suspends the specified thread. <br />
<br />
DWORD SuspendThread(<br />
<br />
    HANDLE hThread 	// handle to the thread <br />
   );<br />
<br />
/*The ResumeThread function decrements a thread's suspend count. When the suspend count is decremented to zero, the execution of the thread is resumed. */<br />
<br />
DWORD ResumeThread(<br />
<br />
    HANDLE hThread 	// identifies thread to restart <br />
   );	<br />

Also Creating critical sections suspends threads when they are trying to use same datas as other threads which are using it in the same time.

Programm3r27-Feb-07 1:27

Programm3r

27-Feb-07 1:27

Hi, thanx alot newbie .... I think you can upgrade your screen name to not_a_newbie_any_more Smile | :)

Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r

Nibu babu thomas27-Feb-07 3:37

27-Feb-07 3:37

Programm3r wrote:
Is it possible to pause the thread or put it in a standby mode?

Along with what others said...

Use _beginthreadex as you can also specify a flag CREATE_SUSPEND which creates the thread in suspended mode.

Nibu thomas
A Developer

Programming tips[^] My site[^]

super_ttd27-Feb-07 0:09

super_ttd

27-Feb-07 0:09

excelent answer... and shame on me

thanks mate

Nibu babu thomas27-Feb-07 0:12

27-Feb-07 0:12

super_ttd wrote:
and shame on me

Why! Nothing to feel ashamed of. Smile | :)

Nibu thomas
A Developer

Programming tips[^] My site[^]

super_ttd27-Feb-07 21:55

super_ttd

27-Feb-07 21:55

thanks Nibu Babu Thomas Wink | ;)

i tried it at home yesterday evening, and effectively, that's working as expected.

i have a subsidiary question. do you know how I could bold the MenuItem in a PopupMenu created with the following :

void CtestDlg::OnPopupMenu()
{
    CMenu popup;
    if (popup.CreatePopupMenu())
    {
        popup.AppendMenu(MF_STRING, 1, "Test Titre");
        popup.AppendMenu(MF_SEPARATOR);
        popup.AppendMenu(MF_STRING, 10, "menuItem1");
        popup.AppendMenu(MF_STRING, 11, "menuItem2");
        popup.AppendMenu(MF_STRING, 12, "menuItem3");
        popup.EnableMenuItem(1, MF_GRAYED);    // I'd like to bold it too... 
 
        CRect rect;
        m_popupMenu.GetWindowRect(&rect);
        popup.TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON, rect.right+1, rect.top, AfxGetMainWnd());
        popup.DestroyMenu();
    }
}

Nibu babu thomas28-Feb-07 17:24

28-Feb-07 17:24

super_ttd wrote:
i have a subsidiary question. do you know how I could bold the MenuItem in a PopupMenu created with the following :

I don't think you can set menu item font to bold. Of course you can make an item as default which will in turn make that menu item a bold one.

It's a bad practice to set all menu items to bold. As per convention only a default menu item should have bold typeface.

Default menu font's are managed by windows itself. We can't do and we should not interfere with this process.

If it's a must for you to do this then create custom menu completely different from existing menu provided by windows as Microsoft office and visual studio has done.

Nibu thomas
A Developer

Programming tips[^] My site[^]

super_ttd28-Feb-07 21:30

super_ttd

28-Feb-07 21:30

hum, i didn't know about default menu items. i'll try that.

actually, what i have is a button, which pops up a popupMenu next to it when clicked.
On this menu, the first element is the name of the current application (grayed BTW), and the second element is a separator. only then follow the really clickable items.
I would like now to bolden the application title, but as you can understand, it will not be clickable, because grayed.
i don't know if setting it as the default item will work anyway, but i'll give it a try and i'll tell you.

thanks for your input dear.

Nibu babu thomas28-Feb-07 21:36

i want to know when a button is clicked but it was "DISABLED"

28-Feb-07 21:36

super_ttd wrote:
actually, what i have is a button, which pops up a popupMenu next to it when clicked.
On this menu, the first element is the name of the current application (grayed BTW), and the second element is a separator. only then follow the really clickable items.
I would like now to bolden the application title, but as you can understand, it will not be clickable, because grayed.
i don't know if setting it as the default item will work anyway, but i'll give it a try and i'll tell you.

Try this[^] article. I use this quite often. Smile | :)

Nibu thomas
A Developer

Programming tips[^] My site[^]

Ing.Raiz8227-Feb-07 0:08

Ing.Raiz82

27-Feb-07 0:08

Hi All,

i have a button "DISABLE", BUT i want to know when the user click it... is possible??

thanks in advanced

Cool | :cool:

Raiz

Re: i want to know when a button is clicked but it was "DISABLED"

prasad_som27-Feb-07 0:15

prasad_som

27-Feb-07 0:15

Ing.Raiz82 wrote:
is possible??

No.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: i want to know when a button is clicked but it was "DISABLED"

James R. Twine27-Feb-07 1:14