C / C++ / MFC

11-Oct-09 9:33

khaliloenit wrote:
For example when i click on desktop (in tree control in the left) the list of files (ONLY a specified type of files (extension i.e doc...)will be displayed not all files in this directory).

See the description of FindFirstFile()[^] for details.

C++ Web Control

Arnon A11-Oct-09 7:33

Arnon A

11-Oct-09 7:33

Hello,
I'm looking for working sample of native C++ without MFC of simple window application with a web browser control embedded in it.
Thanks, A

Richard MacCutchan11-Oct-09 7:44

11-Oct-09 7:44

Arnon A wrote:
I'm looking for working sample

There are thousands of samples here on CP and elsewhere. Try using Google to search for what you are interested in.

Arnon A12-Oct-09 9:05

Arnon A

12-Oct-09 9:05

Thanks but I searched before I asked and didn't found something good for my purpose
Most of the samples here and on the web are using MFC that I can't use.

Richard MacCutchan12-Oct-09 22:01

12-Oct-09 22:01

You could start with this[^].

kilt13-Oct-09 2:27

kilt

13-Oct-09 2:27

It's really horrible code (!)
You can do it with 7 lines of code in plain C/Win32 api (with undocumented (or not) native controls)
See on Adv. Win32 api group
for C code

Richard MacCutchan13-Oct-09 2:58

Re: Greek letter in a dialog

13-Oct-09 2:58

kilt wrote:
You can do it with 7 lines of code in plain C/Win32 api (with undocumented (or not) native controls)
See on Adv. Win32 api group
for C code

Could you point to the article that has the answer, as I could not discover which one you were referring to?

Greek letter in a dialog

Gagnon Claude11-Oct-09 6:06

Gagnon Claude

11-Oct-09 6:06

Hi,

With Visual Studio C++ 2008, how can I put a greek letter in a static
control ?

Thanks,

Claude

Richard MacCutchan11-Oct-09 7:27

Re: Greek letter in a dialog

11-Oct-09 7:27

Gagnon Claude wrote:
With Visual Studio C++ 2008, how can I put a greek letter in a static
control ?

How would you put any letter in a static control?

CPallini11-Oct-09 11:34

CPallini

11-Oct-09 11:34

You may, for instance, use the the escape sequence \xhhhh in the control definition (inside the rc script), e.g.

LTEXT           L"Omega: \x03A9",IDC_STATIC,10,96,300,8

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Closing CDialog when it looses the focus

msn9211-Oct-09 5:08

11-Oct-09 5:08

Hi
I have a COptionsDlg class delivered from CDialog. I open it when user right clicks on the main window:

...
COptionsDlg* dlg=new COptionsDlg();
dlg->Create(COptionsDlg::IDD,this);
dlg->ShowWindow(TRUE);
...

Now once it's shown I want to close it when user clicks anywhere outside of COptionsDlg. I tried overriding OnKillFocus() of COptionsDlg but it didn't work.

And also one more question: How can I exchange data between my main window and COptionsDlg?

Any help would be greatly appreciated Smile | :)

Iain Clarke, Warrior Programmer11-Oct-09 5:24

11-Oct-09 5:24

When you say you override OnKillFocus and it didn;t work, what did you mean?

It didn't get called? Don't forget ON_WM_KILLFOCUS()...

Did it get called, but the window didn't go? Then you need better code!
Look in Generic Picker Dropdown Control[^] for a window that goes *poof* if you click away from it.

Iain.

I have now moved to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), or need contract work done, give me a job! http://cv.imcsoft.co.uk/[^]

msn9211-Oct-09 7:35

11-Oct-09 7:35

Iain, thank you for your reply.

It gets called.
The problem is it crashes when I use DestroyWindow() inside OnKillFocus().
Looks like you had the same problem(quote from your source code):

void CGenericPickerPopup::OnKillFocus(CWnd* pNewWnd) 
{
	CWnd::OnKillFocus(pNewWnd);
	
    ReleaseCapture();
    //DestroyWindow(); - causes crash when Custom colour dialog appears.
}

// KillFocus problem fix suggested by Paul Wilkerson.
void CGenericPickerPopup::OnActivateApp(BOOL bActive, HTASK hTask) 
{
	CWnd::OnActivateApp(bActive, hTask);
	
	// If Deactivating App, cancel this selection
	if (!bActive)
		EndSelection(CPN_SELENDCANCEL);
}

Now I tried overriding OnActivateApp():

void COptionsDlg::OnActivateApp(BOOL bActive, HTASK hTask) 
{
	CDialog::OnActivateApp(bActive, hTask);
	if (!bActive)DestroyWindow();
}

But nothing seems to be happening. What I'm doing wrong?

Joe Woodbury11-Oct-09 7:57

Joe Woodbury

11-Oct-09 7:57

Try EndDialog() (you should rarely, if ever, call DestroyWindow().)

msn9211-Oct-09 10:35

11-Oct-09 10:35

Joe Woodbury, thank you for your reply.
EndDialog(IDOK);
That works, but how do I catch the mouseclick outside of the CDialog that I show? I should close it when user clicks outside of the CDialog. Is it possible?

Joe Woodbury11-Oct-09 10:46

Joe Woodbury

11-Oct-09 10:46

Only if you capture the mouse.

David Crow11-Oct-09 16:50

David Crow

11-Oct-09 16:50

You should call DestroyWindow() to destroy a modeless dialog. In the dialog's PostNcDestroy() method, you should delete the this pointer.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Iain Clarke, Warrior Programmer11-Oct-09 20:37

11-Oct-09 20:37

Hehe, you missed the trick.

I do SetCapture, so I get "all" mouse messages. Then I check for OnLButtonUp, and check whether the click was on my popup window or not.

If not on the window, then Destroy the window.

This is the part of the article that owes the most to C Maunder's original colour picker popup. (Only about 10% survives, but this is the biggest bit)

Iain.

msn9213-Oct-09 15:18

13-Oct-09 15:18

LOLz, Yes I've really missed it! Big Grin | :-D

Thanks man!

All I need is to override OnNcDestroy() and OnLButtonUp(), and it's working!!!

BOOL COptionsDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	SetCapture();//Thank you Iain
	return TRUE;
}

void COptionsDlg::OnNcDestroy()
{//Thanks to DavidCrow
	CDialog::OnNcDestroy();
	delete this;
}

void COptionsDlg::OnLButtonUp(UINT nFlags, CPoint point)
{//Thanks to Iain
	CDialog::OnLButtonUp(nFlags,point);
	CRect rect;
	this->GetWindowRect(rect);
	DWORD pos=GetMessagePos();
	point=CPoint(LOWORD(pos),HIWORD(pos));
	if(!rect.PtInRect(point)){this->DestroyWindow();}//close only if click was outside of the window
}

Thank you Iain and DavidCrow!!! Big Grin | :-D

And one last question: How do I exchange data between my main window and that dialog I show?

Iain Clarke, Warrior Programmer13-Oct-09 21:28

13-Oct-09 21:28

Firstly - nicely done on presenting what you did, with credits to the helpers. And helpful to others!

As for communicating back...

You have many approaches. You could have a structure of information somewhere in the main program, and pass COptionsDlg a pointer to it. Then, if the dialog is closed "properly" (ie, OK button), fill in the structure with the DoDataExchange / UpdateDate method.

I would also post a message to your parent window saying "I'm goooone!". That way the parent can tidy up any pointers to your option dialog, and enable any Tools | Options menu. It's a good idea to post on success AND failure, and let the parent window decide whether it cares. You could put IDOK / IDCANCEL in the WPARAM of the PostMessage.

You could also drop David's delete this bit, keep the options in the dialog, and then delete it all in the PostMessage handler in your main program.

How you do it really depends on the details of your software, but I hope that's given you the idea.

Iain

msn9217-Oct-09 7:29

17-Oct-09 7:29

Iain, thanks once more!

I tried what you suggested:

I created a class that holds the options:

//I think you know graphing calculators...
class WindowOptions {
public:
	double xmin;
	double xmax;
	double xscl;
	double ymin;
	double ymax;
	double yscl;
};

When I create my optionsdialog, I'm passing a pointer to variable of WindowOptions class. But I'm unable to compile my project, I'm getting LNK2005 errors.

"...You could have a structure of information somewhere in the main program, and pass COptionsDlg a pointer to it. Then, if the dialog is closed "properly" (ie, OK button), fill in the structure with the DoDataExchange / UpdateDate method."

Can you give me an example please? Or link where I can read more about it?

Iain Clarke, Warrior Programmer17-Oct-09 7:48

17-Oct-09 7:48

OK, I'll assume you have a small idea about classes, dialog, and dodataexchange. If not, go create some and get an idea!

What I meant was similar to...

struct Options
{
   double xmin;
   ...
};

class CMyApp
{
...
   Options m_Options;
...
};

In your main frame, you have a menu handler:
void CMainFrame::OnToolsOptions ()
{
   CMyOptionsDlg *pDlg = new CMyOptionsDlg; // make a new options dlg - it will self delete.
   CMyApp *pApp = (CMyApp *) AfxGetApp ();
   dlg->m_pOptions = &(pApp->m_Options); // give the dialog a pointer to the options struct.

   dlg->Create (this);  // make the dialog window
}

void COptionDlg::DoDataExchange (CDataExchange *pDX)
{
   ASSERT(m_pOtions);
   if (!m_pOptions) return;

   // get/set a double from an edit box
   DDX_Text (pDX, IDC_XMIN, m_pOptions->xmin);
   ...
}

I hope those snippets gave you a better idea of what I was thinking!

Iain.

msn9231-Oct-09 19:41