HyperTerminal and COM Port - C / C++ / MFC Discussion Boards

Re: Convert char to const WCHAR*

ThatsAlok24-Jun-05 19:53

ThatsAlok

24-Jun-05 19:53

Last but not the Least, you can try wcstombs and mbstowcs too!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

WM_NOTIFY and CHeaderCtrl

Blake Miller24-Jun-05 8:24

Blake Miller

24-Jun-05 8:24

In a Visual Studio 6.0 project, I am not getting any more than a single WM_NOTIFY to my CChildView for the child CHeaderCtrl - I want notification in the CChildView when the dividers are altered - meaning the column widths are changed.

I created a default MFC SDI CMainFrame/CChildView program without document support.
I added a CHeaderCtrl as a member of the CChildView, and override the Create of CChildView to create the header control. The header control appearrs to be crewated correctly.

// CHeaderCtrl header control at top of view window<br />
if( !m_wndHeaderCtrl.Create(HDS_HOTTRACK|HDS_FULLDRAG|WS_CHILD|WS_VISIBLE, rect, this, MHDR_CTRL_ID) ){<br />
    TRACE0("Failed to create header control window\n");<br />
    return FALSE;<br />
}

I used ClassWizard to override the OnChildNotify, but I don't get any messages after the windows are created.

Any ideas?

Got it...

Blake Miller24-Jun-05 8:36

Blake Miller

24-Jun-05 8:36

Override OnNotify instead Mad | :mad:

BOOL CChildView::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult) <br />
{<br />
	// TODO: Add your specialized code here and/or call the base class<br />
	switch( wParam ){<br />
<br />
	// from header control<br />
	case MHDR_CTRL_ID:{<br />
		NMHDR* pNMHDR = (NMHDR*)lParam;<br />
		switch( pNMHDR->code ){<br />
		case HDN_ENDTRACK:<br />
			TRACE0("Header control end track message\n");<br />
			break;<br />
		}<br />
		}break;<br />
	}<br />
<br />
	<br />
	return CWnd ::OnNotify(wParam, lParam, pResult);<br />
}

information bubbles

Anonymous24-Jun-05 8:19

Anonymous

24-Jun-05 8:19

In Windows XP applications (especially MS Office), sometimes instead of spitting out an annoying message box at you, the application just shows a yellow bubble with an informational warning in it that doesn't prevent you from doing what you are doing and doesn't require you to press any buttons (the bubble is like the one that says "Windows updates are ready to install" in System Tasks), it automatically fades after a few seconds. Since I've seen it so often in Windows XP, I was just wondering if there was an easy way to tell windows to make one of those with desired text. By an easy way I mean something as easy as telling windows to make a message box? Thanks.

Re: information bubbles

David Crow24-Jun-05 9:41

David Crow

24-Jun-05 9:41

Anonymous wrote:
a yellow bubble with an informational warning in it

Also known as a tool tip control. There are plenty of MSDN examples that you can search for.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: information bubbles

Christopher Lloyd24-Jun-05 9:55

Christopher Lloyd

24-Jun-05 9:55

Check out EM_SHOWBALLOONTIP - it's easy to use.

Re: information bubbles

Ravi Bhavnani24-Jun-05 16:55

Ravi Bhavnani

24-Jun-05 16:55

See Eugene Pustovoyt's awesome CPP Tooltip[^] article! Cool | :cool:

/ravi

My new year's resolution: 2048 x 1536
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ravib@ravib.com

HyperTerminal and COM Port

A_Fa24-Jun-05 7:56

A_Fa

24-Jun-05 7:56

If any one know how HyperTerminal communicate with COM port , please share with me .
Sleepy | :zzz:

( I know that HyperTerminal don't use ReadFile and WriteFile API to communicate with COM port. )
Confused | :confused:

Thanks .

Check if a process already run...

PaloukiLook24-Jun-05 5:57

PaloukiLook

24-Jun-05 5:57

a make a program (chk.exe) with Visual C++ 7, and i want to check from this program if another process (doct.exe) is already running. If doct.exe is running then do nothing, but if does't then i want to terminate(exit)chk.exe How can i do this Confused | :confused:

Re: Check if a process already run...

David Crow24-Jun-05 7:34

David Crow

24-Jun-05 7:34

Is EnumProcesses(), or the Process32First()/Process32Next() pair of any help?

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: Check if a process already run...

PaloukiLook24-Jun-05 10:46

PaloukiLook

24-Jun-05 10:46

Thanks but... i am very veryyy new in C++ D'Oh! | :doh:

and i need i little more help...

Re: Check if a process already run...

David Crow24-Jun-05 10:53

David Crow

24-Jun-05 10:53

EnumProcesses

Process32First

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: Check if a process already run...

ThatsAlok27-Jun-05 2:32

ThatsAlok

27-Jun-05 2:32

PaloukiLook wrote:
i need i little more help...

Sure Here it is :-
http://www.codeproject.com/threads/processes.asp[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Solution

PaloukiLook28-Jun-05 2:28

PaloukiLook

28-Jun-05 2:28

thanks... this really help :->

Re: Solution

ThatsAlok28-Jun-05 2:31

ThatsAlok

28-Jun-05 2:31

PaloukiLook wrote:
thanks

My Pleasure Smile | :)

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Storing Information On Main Window and Modeless Dialogs

jerry1211a24-Jun-05 5:34

jerry1211a

24-Jun-05 5:34

Hi,

I have a vstudio.net application with a main window and many windows a user may or may not open. These are modeless dialog Windows. How can I store the position, size, etc., of all the Windows that are opened when I close the application. The user may have any number of Windows opened, or may decide to close some. If the user opens the application file again...I want all the windows that were opened to reappear in the same positions and size, etc., on the desktop. I dont want to use the registry, but hope that I can use serialization.

Thanks.
Jerry

Re: Storing Information On Main Window and Modeless Dialogs

Jack Puppy24-Jun-05 6:46

Jack Puppy

24-Jun-05 6:46

I've always used GetWindowPlacement for this, but I always saved it to the registry as binary data. Writing a serialization routine for the WINDOWPLACEMENT struct shouldn't be too hard.

I found this sample on MSKB, don't know if it uses registry or not.
MDIRest.exe Saves and Restores Window Size & Position

Pssst. You see that little light on your monitor? That's actually a government installed spy camera. Smile and wave to big brother!

Copy part Of a String into a new string

ana_bahy24-Jun-05 5:30

ana_bahy

24-Jun-05 5:30

Hello every 1
If i had a (string Date_Time; ) and it stroe date and time like that
xx/xx/xxxx xx:xx:xx all in 1 string
the first 10 char are the date , then a space , the 8 char of time
any way , i wana make a new string which have only the date..( string Date;)
so i need a string which read from string Date_Time; until the first space..
i was trying
cin.getline(Date,' ');
but it did not work

Waiting for your replies,
ANA BAHY

Re: Copy part Of a String into a new string

C^hris L^osinger24-Jun-05 5:40

C^hris L^osinger

24-Jun-05 5:40

you can read one character at a time: put everything before the first space into the 'date' and everything after the space but before the end of the line into the 'time'.

or, you can read the whole line, search the string for the space and then use string::substr to extract the 'date' and the 'time' substrings.

or, you can read the whole string and use something like string::erase to chop off the 'time' part of the string : str.erase(10);

Cleek | Image Toolkits | Thumbnail maker

Re: Copy part Of a String into a new string

ana_bahy24-Jun-05 5:55

ana_bahy

24-Jun-05 5:55

Thanks for the help , but i am not good at all , so could u help me a littile bet more??

now i have a s
String Date_Time;
if i used cout<

Re: Copy part Of a String into a new string

Jack Puppy24-Jun-05 6:58

Jack Puppy

24-Jun-05 6:58

If you know the date will always be 10 characters, use the substr function.

<br />
std::string dateTime = "2000/10/31 12:00";<br />
std::string dateOnly = dateTime.substr(0, 10);<br />

substr(m, n) will return n characters starting at the m zero-based character.

if you're using MFC, use CString::Left. (or Mid)

Pssst. You see that little light on your monitor? That's actually a government installed spy camera. Smile and wave to big brother!

XP-Style selection-rectangle

Luy24-Jun-05 4:20

Luy

24-Jun-05 4:20

Hi,

Windows Explorer uses nice selection-rectangles. I want to use them in my ListView control, too (I do not use MFC).
How can I do that?

Re: XP-Style selection-rectangle

Blake Miller24-Jun-05 8:17

Blake Miller

24-Jun-05 8:17

Change text and background color to imply selection.
Use DrawFocusRect()

Re: XP-Style selection-rectangle

Luy24-Jun-05 8:46

Luy

24-Jun-05 8:46

Thanks for your answer, but my question should refer to the rectangle you drag with the mouse when you select multiple items. The standard listview just shows a grey border, but Windows Explorer fills this rectangle transparently with the selection color.

Re: XP-Style selection-rectangle

Blake Miller24-Jun-05 10:19

Blake Miller

24-Jun-05 10:19

If your control is owner drawn, then you get that 'transparent' effect by changing the background color prior to drawing the text. The 'grey frame' you see by default is the DrawFocusRect.

If you mean the outline of the folders as they are dragged, then I think there is an interface for creating the bitmap mask used for the 'drag image'.

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