C / C++ / MFC

1-Dec-06 11:58

Hi All,

I need to know how to set a default value in Combo Box. For example, right now I have a combo box with 3 times in it (Train, Bus, Both). I need to set "BOTH" as a default value in the combo box.

Thanks in advance
Smile | :)

C++Prog

Mark Salsbery1-Dec-06 12:05

1-Dec-06 12:05

You can send the combobox a CB_SETCURSEL message (CComboBox::SetCurSel() in MFC).

Mark

celllllllll1-Dec-06 12:22

1-Dec-06 12:22

Thanks a lot

Can I do it in 'Combo Box properties dialog'..or need to write a code for it?

C++Prog

Mark Salsbery1-Dec-06 12:42

1-Dec-06 12:42

Only at runtime, anytime after the Windows object (HWND) is created.
In response to the WM_INITDIALOG message is a good place Smile | :)

Mark

Mark Salsbery1-Dec-06 12:43

1-Dec-06 12:43

And...you'll want to do that AFTER you add items to the combobox!

Mark

celllllllll1-Dec-06 12:57

1-Dec-06 12:57

I got it.....its working.....Thanks a bunch.

C++Prog

celllllllll1-Dec-06 13:21

1-Dec-06 13:21

Here comes another thing...I need to do it dynamically. SetCurSel will make it static.

Thanks again

C++Prog

Mark Salsbery1-Dec-06 13:28

1-Dec-06 13:28

Preeti9 wrote:
I need to do it dynamically. SetCurSel will make it static.

How so? It should just select/highlight the string, scrolling it into view if necessary.

celllllllll1-Dec-06 13:35

1-Dec-06 13:35

o okay...I got it....

Thanks

C++Prog

Mark Salsbery1-Dec-06 14:08

Pointer to RichEditCtrl [modified]

1-Dec-06 14:08

Makakuin1-Dec-06 10:20

Makakuin

1-Dec-06 10:20

I`m trying to write SDI MFC application with view class CRichEditCtrl. In my CMyAppView I used GetRichEditCtrl() to access the main RichEditCtrl. Now I want to create an independent class to write to RichEditCtrl lets call it CTextEditor.
What I don`t understand is how to tell the class to find CRichEditCtrl as I`m not able to use GetRichEditCtrl() outside the CMyApp class. I`ve tried to do something like:

<br />
int CTextEditor::WriteText(CRichEditCtrl *wnd,CString str,CHARFORMAT cf)<br />
{<br />
	int nOldLines = 0, nNewLines = 0, nScroll = 0;<br />
	long nInsertionPoint = 0;<br />
	nOldLines = wnd->GetLineCount();<br />
	nInsertionPoint = wnd->GetWindowTextLength();<br />
	wnd->SetSel(nInsertionPoint, -1);<br />
	wnd->SetSelectionCharFormat(cf);<br />
	wnd->ReplaceSel(str);<br />
	nNewLines = wnd->GetLineCount();<br />
	nScroll = nNewLines - nOldLines;<br />
	wnd->LineScroll(nScroll);<br />
        return 0;<br />
} <br />

And then call it from CMyapView like this:

<br />
CHARFORMAT cf;<br />
cf.dwEffects = CFE_BOLD;<br />
cf.dwMask = CFM_BOLD;<br />
cf.cbSize = sizeof(CHARFORMAT);<br />
CTextEditor editor;<br />
editor.WriteText(&GetRichEditCtrl(),"Mytext",cf); <br />

But I get the unresolved externals error..
What am I doing wrong?
Please help - no clue bout how to use pointers...

Re: Pointer to RichEditCtrl

prasad_som1-Dec-06 17:03

prasad_som

1-Dec-06 17:03

Can you paste error text ?

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

Re: Pointer to RichEditCtrl

Makakuin1-Dec-06 21:24

Makakuin

1-Dec-06 21:24

Here`s what the build log says...

TestAppView.obj : error LNK2019: unresolved external symbol "public: int __thiscall CTextEditor::WriteText(class CRichEditCtrl *,class ATL::CStringT<char,class strtraitmfc_dll<char,class="" atl::chtraitscrt<char=""> > >,struct _charformat)" (?WriteText@CTextEditor@@QAEHPAVCRichEditCtrl@@V?$CStringT@DV?$StrTraitMFC_DLL@DV?$ChTraitsCRT@D@ATL@@@@@ATL@@U_charformat@@@Z) referenced in function "public: void __thiscall CTestAppView::OnPortOpen(void)" (?OnPortOpen@CTestAppView@@QAEXXZ)
C:\Documents and Settings\Raivo\My Documents\Visual Studio 2005\Projects\TestApp\Debug\TestApp.exe : fatal error LNK1120: 1 unresolved externals

Re: Pointer to RichEditCtrl

prasad_som3-Dec-06 17:58

prasad_som

3-Dec-06 17:58

It seems like, somehow CTextEditor class definition is not included in project. Just curious to know, whether you have added cpp containing CTextEditor in to your project.
Because, from error text, its seems so.

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

App without UI

HakunaMatada1-Dec-06 7:33

HakunaMatada

1-Dec-06 7:33

Can anyone give me pointers on creating an Application without any UI? The thing is I am creating an application but the UI of the application is in a COM component so the application must not have any UI or Windows to be precise.

Can anyone help? Frown | :(

---

Hakuna-Matada Beer | [beer]

It means no worries for the rest of your days...
It's our problem free, Philosophy
Jig | [Dance]

It’s rather simple to write an unmanaged C++ application that crashes when it performs a callback. It’s impossible to write a managed application that does the same, thanks to delegates. - Jeff Prosise

Mark Salsbery1-Dec-06 7:36

1-Dec-06 7:36

HakunaMatada wrote:
Can anyone give me pointers on creating an Application without any UI?

If you hand me one of those beers I'll give you a pointer Smile | :)

The very simplest way would be to not show your app's main window.

Thanks for the beer Smile | :)

Mark

HakunaMatada1-Dec-06 17:08

HakunaMatada

1-Dec-06 17:08

Mark Salsbery wrote:
The very simplest way would be to not show your app's main window.

I know we can just hide the main Window but I was looking at a more elegant solution. Smile | :)

Mark Salsbery wrote:
Thanks for the beer

You are welcome. Beer | [beer]

---

Hakuna-Matada Beer | [beer]

It means no worries for the rest of your days...
It's our problem free, Philosophy
Jig | [Dance]

Mark Salsbery1-Dec-06 17:57

1-Dec-06 17:57

HakunaMatada wrote:
but I was looking at a more elegant solution.

Console app with hidden console window.
A service application (but has to be run from the service manager).

What if you make a Win32 app and never create a window? Smile | :)

HakunaMatada1-Dec-06 19:17

HakunaMatada

1-Dec-06 19:17

Mark Salsbery wrote:
What if you make a Win32 app and never create a window?

I did try this and it seems to work. I created a message loop but didn't create any window. Would this affect the application in any way?

---

Hakuna-Matada Beer | [beer]

It means no worries for the rest of your days...
It's our problem free, Philosophy
Jig | [Dance]

Mark Salsbery2-Dec-06 5:38

2-Dec-06 5:38

I would think if it runs it's fine Smile | :)

As long as there's a way to terminate the process it shouldn't matter.
Windows service applications run just fine with absolutely NO UI. The only difference is the
added entry points so the SCM can control them.

You may not even need a message loop.

Mark

Chris Meech1-Dec-06 7:54

Chris Meech

1-Dec-06 7:54

Have you tried to do this from a Win32 based console app?

Chris Meech
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