C / C++ / MFC Discussion Boards

56789012342-Apr-03 0:46

2-Apr-03 0:46

void DoEventsEx(UINT wMsgFilterMin, UINT wMsgFilterMax)
{
MSG msg;

while ( ::PeekMessage(&msg, NULL, wMsgFilterMin, wMsgFilterMax, PM_NOREMOVE ) )
{
if ( ::GetMessage(&msg, NULL, wMsgFilterMin, wMsgFilterMax))
{
::TranslateMessage(&msg);
::DispatchMessage(&msg);
}
else
{
break;
}
}
}

Midi API, please help

bob_0002-Apr-03 0:17

bob_000

2-Apr-03 0:17

Hi,

I am building a wind synth that uses the API midi functions of
a soundcard. m_Note2 is an int value according to the keys pressed
and m_PBAD_2 is an int value ranging from 0-127 according to the airflow
thru the synth, updated according to the timer set at 250 millisec.

When I blow into the synth a note is played every 25sec but does not
stop, because the m_note in stopnote() outdated.
I have no idea what to add to the playnote() function. Any suggestions appreciated,
my knowledge of VC++ is very limited.

Cheers,
Rob
robert.harrington2@mail.dcu.ie

void CAD_mouthDlg::PlayNote()
{
UpdateData(TRUE);

MidiOutMessage (hMidiOut, 0x00, 0x90, m_Note2,m_PBAD_2) ;

}

void CAD_mouthDlg::StopNote()
{
if(m_Key_Press == FALSE)
{
MidiOutMessage (hMidiOut, 0x00, 0x90, m_Note2,0) ;
}
else
{
}
}

void CAD_mouthDlg::OnTimer(UINT nIDEvent)
{
CAD_mouthDlg::read_analog();
CAD_mouthDlg::SetPortChigh();
CAD_mouthDlg::OnButtonReadPort();
CAD_mouthDlg::PlayNote();
CAD_mouthDlg::StopNote();
CDialog::OnTimer(nIDEvent);
}

Autometed Content Publishing System for Intranet

Bajwagr81-Apr-03 23:53

Bajwagr8

1-Apr-03 23:53

Hi I am looking for the Automation of Ms Office Files (.doc, .xls, .ppt). So that the software shoudl be able to convert the documents into single or multiple page(s) HTML format. MS Word, MS Excel, MS Powerpoint, Visio and jpeg/gif format documents should be supported using VC6. The conversion of document should be able to take into account the layout scheme of the website and be able to embed the converted pages in the layout scheme of that particular website. How can i achieve this target? Can anyone help me out of this trouble?

I'll be realy grateful.

Thanx.

Disable a tab in a CPropertySheet

JensB1-Apr-03 22:42

JensB

1-Apr-03 22:42

Ello

Anyone knows how i can easily disable a tab in a propertysheet without having to subclass the CPropertySheet?
i'm now using, when a condition is true, i just remove that page so you can't see it. That's already a good solution. The tab disabling looks even better tho Smile | :)

Greetings
Jens

Re: Disable a tab in a CPropertySheet

Rage1-Apr-03 23:39

Rage

1-Apr-03 23:39

Maybe you could use CPropertyPage::Create to create the page and set the style WM_DISABLED (2nd paameter).

~RaGE();

Changing font type in a View

Anonymous1-Apr-03 22:05

Anonymous

1-Apr-03 22:05

In my SDI application I have to write some text
in the View. I use TextOut function and it works fine
using a Default font size and type (I suppose).

I'd like to change font size and type. Is it
possible ?? How ??

Thanks a lot !!!

Re: Changing font type in a View

jhwurmbach1-Apr-03 22:19

jhwurmbach

1-Apr-03 22:19

Could you use a CStatic for your Text? CP has plenty of information about CStatic.

My opinions may have changed, but not the fact that I am right.

Re: Changing font type in a View

Anonymous1-Apr-03 22:29

Anonymous

1-Apr-03 22:29

My View is not a CFormView derived class.
I'dont know if it is possible to create a CStatic control in
a CView derived class. But I'd prefer to don't use a a CStatic
control if it is possible...
Text I have to draw changes continously position in my View and
must be often created and destroyed so I think that it could be
more easy to use TextOut function...

But.. how to change font type and size ???
The only why is to create and manage CStatic controls ??

Re: Changing font type in a View

ilgale1-Apr-03 23:32

ilgale

1-Apr-03 23:32

I have followed your message... and I have created
a CStatic control in my View.
It can be good !!! So I can use a derived class from
CStatic in order to change all parameters...

Now, I have another problem...
when my View is repainted the CStatic control is drawn
again (I suppose) and it blinks.

How can I solve this problem ??

Thanks a lot !!!

Re: Changing font type in a View

Cedric Moonen2-Apr-03 0:08

Cedric Moonen

2-Apr-03 0:08

You have to draw it first in memory and, when it's done, you push it on the screen.
Use CreateCompatibleDC to create the memory dc compatible with the screen dc. Then draw your image on this device context, and, when it's done, send it to the screen dc using the BitBlt method (bitmap copy).

Re: Changing font type in a View

Chintan2-Apr-03 7:09

Chintan

2-Apr-03 7:09

Use SelectObject() API function giving second parameter as HFONT

C.R.Naik

Modeless property sheet and OK/Cancel buttons.

justin2231-Apr-03 21:58

justin223

1-Apr-03 21:58

Hello

I'm trying to get the Ok/Cancel buttons to work with a modeless property sheet.

I've managed to get all buttons to show by overriding OnInitDialog() (I'm using the CTreePropSheet availible on this site)

BOOL CSettingsSheet::OnInitDialog()
{
m_psh.dwFlags &= ~PSH_HASHELP;
m_psh.dwFlags &= ~PSH_NOAPPLYNOW;

m_bModeless = FALSE;
BOOL bResult = CTreePropSheet::OnInitDialog();
m_bModeless = TRUE;

return bResult;
}

All buttons are shown despite of the dwFlags changes. How can I get rid of the apply/help buttons?

Thanks

Re: Modeless property sheet and OK/Cancel buttons.

jhwurmbach1-Apr-03 22:24

jhwurmbach

1-Apr-03 22:24

In the Sheets constructor, before any of the pages are constructed, I call this:

//Remove the Apply Button
m_psh.dwFlags |= PSH_NOAPPLYNOW;
//Remove the Help button
m_psh.dwFlags &= ~PSH_HASHELP;

< edit > And here is what I do in the beginning of OnInitDialog

//see Microsoft Knowledge Base Article - Q146916
 m_bModeless=FALSE;                              //cheat BaseClass into NOT disabling Buttons
 m_nFlags |= WF_CONTINUEMODAL;
 BOOL bResult = CPropertySheet::OnInitDialog();
 m_bModeless= TRUE;                              //reset to our actual state.
 m_nFlags &= ~WF_CONTINUEMODAL;

< /edit >

Stop asking why - I just copied it from someone, and as it worked I never bothered to think about it again.;)

My opinions may have changed, but not the fact that I am right.

Progress Bar

summo1-Apr-03 21:26

summo

1-Apr-03 21:26

I have dragged and dropped the progress bar control on a dialog and have also declared it's variable. Now I want to show increments in the progress bar in a loop. What would be the method of doing so.

Reply me soon

Re: Progress Bar

Cedric Moonen1-Apr-03 22:03

Cedric Moonen

1-Apr-03 22:03

First you have to tell the low and high ranges with the SetRange( short nLower, short nUpper ) method. You can also specify a step increment with the SetStep( int nStep ) method.

For showing a new progress use the StepIt( ) method.
Take a look at the MSDN documentation. Everything is described there.

Searching database more effective

Ohaiyo1-Apr-03 19:33

Ohaiyo

1-Apr-03 19:33

hey guys, good day.

i can view my database in visual c++ by ADO but one thing is that it not user-friendly. i have to click the navigating btn find the ID i want.

So i wanna have a search function like using titleid to search the thing i want. It like that, i key the no. 40 for titleid then click search. How should i start the code for search thanks.. alot

RichText control

milan1-Apr-03 19:28

milan

1-Apr-03 19:28

Hi,
I am facing problem with the richtext control. When you save the content with the bullet format, it works but when the same content is extracted from database format is totally lost instead certain unnecessary dot appears?
Help me out !
Rose | [Rose]

satan

controlling characters entered into an edit box

Raghunandan S1-Apr-03 19:22

Raghunandan S

1-Apr-03 19:22

My dialog box contains many edit boxes and hence i want to write a general class which inherits from CEdit and allows the user to enter only numeric characters.Please some one advice me on how to implement this.I implemented this to a certain extent where it can control the characters typed but it cannot control the characters entered by pasting into the edit box

Re: controlling characters entered into an edit box

Anonymous1-Apr-03 20:42

Anonymous

1-Apr-03 20:42

If you use the ES_NUMBER style for the edit box, it only accepts digits.

Re: controlling characters entered into an edit box

JensB1-Apr-03 23:02

JensB

1-Apr-03 23:02

i had the same problem about the pasting thing ... i simply fixed that problem
just catch the wm_paste message, open clipboard, clear clipboard en close clipboard.
Hereby noone can paste anything in your edit fields
so you get better control

ehehe Wink | ;)

Re: controlling characters entered into an edit box

jhwurmbach1-Apr-03 23:11

jhwurmbach

1-Apr-03 23:11

Did you ever try to enter the perfectly valid number -1.5 ?
WTF | :WTF:

< rant >
Whoever Idiot did design that control deserves GUI usability testing for eternity!
And his project manager alike!
They made a special control for entering IP adresses, but failed to provide one for entering numbers. Idiots! Dead | X|

< /rant >

My opinions may have changed, but not the fact that I am right.

Re: controlling characters entered into an edit box

jhwurmbach1-Apr-03 23:15

jhwurmbach

1-Apr-03 23:15

Handle WM_PASTE, save the content of your control and call CEdit::Default() to do whatever the message wants.
Now you can validate the new content and reject (by copying the saved text back) it or allow it by simply doing nothing.

My opinions may have changed, but not the fact that I am right.

Error: Cannot open program database

Ahsan Abbas1-Apr-03 19:10

Ahsan Abbas

1-Apr-03 19:10

Hi all,
I am trying to build a project of Visual C++, but its giving very strange error on every .cpp file of the project.

The error is:
fatal error C1033: cannot open program database 'c:\MyWorkspace\business tier\objects\MyProject\release\vc60.idb'

MSDN say this about the error:
====================================
Fatal Error C1033
cannot open program database 'filename'

There was an error opening the .PDB file. This may be caused by a disk error.
=====================================
Can anyone tell what can be the reason of this error?

Ahsan

Re: Error: Cannot open program database

peterchen2-Apr-03 6:16

peterchen

2-Apr-03 6:16

Do you have write access to the folder?
Delete existing .pdb files, if any

Italian is a beautiful language. amare means to love, and amara bitter.

sighist | Agile Programming | doxygen

SDI using CApp in other Class....

Exceter1-Apr-03 18:54

Exceter

1-Apr-03 18:54

This is an SDI Application, I am connecting to the Database using a Dialog box, and m_pConn to TRUE if the connecion is established. I want to use the forced connection but have the error.
What I am doing wrong?
how to solve this error:

BOOL CStform::OnInitDialog()
{
CDialog::OnInitDialog();

// TODO: Add extra initialization here
_RecordsetPtr m_pRecordset;
CStudentApp *App;
_bstr_t bstrQuery("SELECT * FROM StudV");
_variant_t vRecsAffected(0L);

try {
_CommandPtr m_pCommand;
m_pCommand.CreateInstance (__uuidof (Command));
m_pCommand->ActiveConnection = App->m_pConn; // Formerly opened connection pointer
m_pCommand->CommandText = "Select * From Student";

//m_pRecordset = App.m_pConn->Execute(bstrQuery, vRecsAffected, adOptionUnspecified);
//if (!m_pRecordset->GetadoEOF()) {

}
}
return TRUE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}

error C2248: 'CStudentApp::m_pConn' : cannot access protected member declared in class 'CStudentApp'
error C2317: 'try' block starting on line '46' has no catch handlers
error C2059: syntax error : 'return'
error C2059: syntax error : '}'
error C2143: syntax error : missing ';' before '}'
error C2059: syntax error : '}'

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