C / C++ / MFC

How to send ATAI "reset device" command?

13-Jun-03 3:31

I want to realize splitter window in mfc extention dll. and i did so
1.Derived a class from CFrameWnd named "CMyFrame"
2.Derived a class from CView named "CMyView"
3.use construct function to declare a frame
CMyFrame myframe
4.Create myframe
myframe.Create(...)
5.Create view
myframe.CreateView(...)

when i execute the project ,there appears seriou error

can you tell me what is wrong?
note:in the function myframe.Create(...),
i set the parameter pContext = NULL. if the parameter can not be set with NULL,where i can get createcontext,because i do all above in extension dll

Brian van der Beek13-Jun-03 3:14

Brian van der Beek

13-Jun-03 3:14

I need to reset an ata/ide device, but don't know how to do this. Anyone knows how to do this?

Bind a Key to a controller?

Syxx13-Jun-03 3:10

Syxx

13-Jun-03 3:10

is it possible to bind a keyboard key [left alt] to a usb controller button?
im working on a project for school and i'v done tons of work and now i cant proceed with out doing this...ugghh im screwed. if anyone could help me that would be amazing.

im running win98 right now.

if you need anymore info i can do so.

thanks.

Split Method

Valeria Bogdevich13-Jun-03 3:04

Valeria Bogdevich

13-Jun-03 3:04

I have a LPSTR variable and I need to use the Split method to extract the necessary data.

David Crow13-Jun-03 3:12

David Crow

13-Jun-03 3:12

Split() is part of VB and JScript. I'm not familar with it in C/C++. Either way, the first parameter is a string or an instance of a Regular Expression object identifying one or more characters to use in separating the string. If omitted, a single-element array containing the entire string is returned. The return value is an array of strings split at each point where separator occurs in the source. The separator is not returned as part of any array element.

David Crow13-Jun-03 3:36

David Crow

13-Jun-03 3:36

I've never used it, but I would image that the string class from the STL would accomodate you.

basementman13-Jun-03 4:14

basementman

13-Jun-03 4:14

Two methods to consider are using the strtok function or simply doing it yourself in a loop like this:

void ProcessEMailAddresses(char *cpEMailAddresses)
{
char *cpDelimiter;
char *p = cpEMailAddresses;
char caEMailAddress[256];
while (p && *p)
{
caEMailAddress[0] = 0;
cpDelimiter = strchr(p,';');
if (!cpDelimiter)
cpDelimiter = strchr(p,','); // check for comma separator

if (cpDelimiter)
{
memcpy(caEMailAddress,p,cpDelimiter-p);
caEMailAddress[cpDelimiter-p] = 0;
}
else
{
strcpy(caEMailAddress,p);
}

if (caEMailAddress[0])
{
// process it!
}

if (cpDelimiter)
p = cpDelimiter + 1;
else
p = NULL;
}
}

<marquee SCROLLAMOUNT=3 scrolldelay=80 direction=right width=40% style="border: 2px inset silver;background-color:yellow;color:green;font-family:Verdana,Arial;font-size:8pt;font-style:italic">onwards and upwards...</marquee>

Anonymous13-Jun-03 7:44

how to draw rectangle in win98

13-Jun-03 7:44

So what's your question? Smile | :)

tonymjj13-Jun-03 2:52

tonymjj

13-Jun-03 2:52

I want draw rectangle in win98, and I use MM_LOMETRIC mode to draw.
I need vc source code Smile | :)

pls help me!!! Big Grin | :-D

Re: how to draw rectangle in win98

Anonymous13-Jun-03 3:19

Microsoft Rich Text Control 6.0 Reference?

13-Jun-03 3:19

hi:
you can use class CDC 's function
virtual int SetMapMode( int nMapMode );
BOOL Rectangle( int x1, int y1, int x2, int y2 );

Yasen Georgiew13-Jun-03 2:44

Yasen Georgiew

13-Jun-03 2:44

Hi,

Where I can find any documentation about this ActiveX control.
I've searched in MSDN with no results.

When I use it in my VC++ project, the Class Wizard generates a wrapper
class called CRichText. It has a lot of functions which I don't know
how to use. I mean I don't know the parameters format. That's why
I need any type of documentation or reference. Can anybody help
me with that ?

Best Regards!
Yasen

Re: Microsoft Rich Text Control 6.0 Reference?

Anonymous13-Jun-03 3:13

Re: Microsoft Rich Text Control 6.0 Reference?

13-Jun-03 3:13

hi!
Do you refer to rich edit control?if so,you can find help in msdn
by CRichEditCtrl.

Yasen Georgiew13-Jun-03 3:18

Yasen Georgiew

13-Jun-03 3:18

No, I don't refer to CRichEditCtrl, I know how to deal with it. But it is an ActiveX control it is not a CRichEditCtrl. So, I can't find documentation about it Confused | :confused:

Yasen

CString or LPCTSTR...which one's better?

FASTian13-Jun-03 2:01

FASTian

13-Jun-03 2:01

which one's better to use in a unicode application?
i mean if its so easy to use CString why go for stuff that will make the application more complex harder to read and debug
i am all ears to suggestions and views..

Re: CString or LPCTSTR...which one's better?

rrrado13-Jun-03 2:07

rrrado

13-Jun-03 2:07

It depends what type of operations you nedd to perform on the strings. If you use MFC anyway, and if you need to manipulate strings like deleting characters, and another size-modifying functions, it's best to use CStrings, you rife will be much easier and you can avoid spme bugs.
But if you just need to pass unmodified strings to another functions, LPTSTR is more efficient.

rrrado

Re: CString or LPCTSTR...which one's better?

TeeBee30313-Jun-03 2:10

TeeBee303

13-Jun-03 2:10

CString uses TCHAR internally. (LPTSTR)
so if you define _UNICODE, TCHAR is defined as wchar_t so CString is also using unicode

where is the problem?
Smile | :)

CEdit and the Return key

CodeBrain13-Jun-03 1:42

13-Jun-03 1:42

I have a single line edit control and a class derived from CEdit. Now I want that the CFormView class which contains the edit control gets informed if the user presses the Return key if the Edit control has the input focus.
I've tried to react on the NM_RETURN notification in my form view but I don't get the event in the form view (must I use reflection in my edit class?).
Then I tried to capture the VK_RETURN key in the OnChar method of my edit class, but the OnChar method seems not to get any VK_RETURN events.

So what would be the best way to get my form view informed if the user presses the return key in my edit control?

Thanks in advance.

rrrado13-Jun-03 1:58

rrrado

13-Jun-03 1:58

Try to set "Want return" style in resource editor for edit control,
i think NM_RETURN could start working then

rrrado

CodeBrain13-Jun-03 2:23

13-Jun-03 2:23

No luck, it seems not to work. I've already tried it and it makes no difference. The documentation also says that "Want return" only effects multiline edit controls.

Johann Gerell13-Jun-03 2:17

Johann Gerell

13-Jun-03 2:17

Subclass the edit control like this:

pOldEditWindowProc = (WNDPROC)::SetWindowLong(hWndEdit, GWL_WNDPROC, (LONG)EditWindowProc);
.
.
.
LRESULT CALLBACK EditWindowProc(HWND aHwnd, UINT aMsg, WPARAM aWp, LPARAM aLp)
{
    if(Return was pressed) ::SendMessage(::GetParent(aHwnd), aMsg, aWp, aLp); 

    return ::CallWindowProc(pOldEditWindowProc, aHwnd, aMsg, aWp, aLp);
}

--
Human beings, who are almost unique in having the ability
to learn from the experience of others, are also remarkable
for their apparent disinclination to do so. (Douglas Adams)

Roger Allen13-Jun-03 2:17

Roger Allen

13-Jun-03 2:17

The other way to handle this is in PreTranslateMessage()

if (pMsg->message == WM_KEYDOWN && pMsg->wParam == VK_RETURN && GetFocus() == GetDlgItem(ID_OF_CONTROL))
{
// handle it here!
}

Roger Allen
Sonork 100.10016

Were you different as a kid? Did you ever say "Ooohhh, shiny red" even once? - Paul Watson 11-February-2003

CodeBrain13-Jun-03 3:47

13-Jun-03 3:47

I have added some additional code, which seems to work now. But I still find it a bit ugly to perform the check in the application class. But that's ugly windows Dead | X|

Would be nice if someone could add feedback, if this code is correct or not, e.g. the
CWinApp::PreTranslateMessage(pMsg); part.

Thanks for your help!

BOOL CMyApp::PreTranslateMessage(MSG* pMsg)
{
if (pMsg->message == WM_KEYDOWN && pMsg->wParam == VK_RETURN))
{
HWND hFocus = GetFocus();
CFrameWnd* pFrmWnd = dynamic_cast<cframewnd*>(GetMainWnd()); if (pFrmWnd == NULL)
{
ASSERT(FALSE);
}

CWnd* pTarget = pFrmWnd->GetActiveView()->GetDlgItem(IDC_EDIT_X);
// We should test, if an active view exists, if we are not sure...
HWND hTarget = NULL;
if (pTarget != NULL)
{
hTarget = pTarget->GetSafeHwnd();
}
if (hFocus == hTarget)
{
// Do what you want
}
return 1;
}
else
{
return CWinApp::PreTranslateMessage(pMsg);
}
}

Ryan Binns13-Jun-03 4:05

Ryan Binns

13-Jun-03 4:05

I would have overridden PreTranslateMessage() in your edit control, and just sent a message to the parent:

BOOL CMyEdit::PreTranslateMessage(MSG *pMsg)
{
    if((pMsg->message == WM_KEYDOWN) && (pMsg->wParam == VK_RETURN))
    {
        CWnd *pParent = GetParent();
        if(pParent != NULL)
            pParent->SendMessage(WM_KEYDOWN, VK_RETURN, pMsg->lParam);
    }
    else
        return CEdit::PreTranslateMessage(pMsg);
}

And then just handle WM_KEYDOWN like normal in the parent and check for Enter being pressed. If you need to handle it in your main frame window, then use AfxGetMainWnd() instead of GetParent().

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

CodeBrain13-Jun-03 4:44