Filedialog and DLL - C / C++ / MFC Discussion Boards

Re: How can I append LPTSTR to CStirng [modified]

Christian Graus8-Jun-06 22:24

8-Jun-06 22:24

CString s;
LPCTSTR st;
s += CString(st);

in fact, I thought s += st would work.

Christian Graus - Microsoft MVP - C++

-- modified at 4:25 Friday 9th June, 2006

Re: How can I append LPTSTR to CStirng

Laxman Auti8-Jun-06 22:45

Laxman Auti

8-Jun-06 22:45

NoName II wrote:
How can I append LPTSTR to CStirng

Here is another way how we can append the LPTSTR to CString

CString strTest("Hello");
LPTSTR lpStr=" World";
strTest.Insert(strTest.GetLength(),lpStr);

We can directly add the strings using += operator as it overloaded in CString class

Knock out 't' from can't,
You can if you think you can
Cool | :cool:

Re: How can I append LPTSTR to CStirng

Hamid_RT9-Jun-06 0:48

Hamid_RT

9-Jun-06 0:48

See

<br />
	LPTSTR lpt;<br />
	lpt=(LPTSTR)LocalAlloc(LPTR,256);<br />
	strcat(lpt,"test");<br />
	CString str;<br />
//	str.SetString(lpt,4);<br />
//	str=lpt;<br />
	str=str+lpt;<br />
	str.Insert(0,lpt);<br />
	str.Append(lpt);<br />
	LocalFree(lpt);<br />

whitesky

Re: How can I append LPTSTR to CStirng

toxcct9-Jun-06 1:39

toxcct

9-Jun-06 1:39

have you ever tried the simplest way (with + or += operators) ?

CString str = "hello ";
str += "world !!";

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: How can I append LPTSTR to CStirng

ThatsAlok11-Jun-06 22:18

ThatsAlok

11-Jun-06 22:18

NoName II wrote:
How can I append LPTSTR to CStirng

LPTSTR pSz="ALOK loves";
LPTSTR pSz2="CP"
CString Combined Str=CString(pSz)+CString(pSz2);

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

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You

Streaming Video in MFC or any language [modified]

UCFSeniorBen8-Jun-06 21:26

UCFSeniorBen

8-Jun-06 21:26

Does anyone know how to do streaming video feeds with MFC or any other programming style? I'm working on a senior design project for school and we'd like this to be a part of the application I'm designing, the only problem is that I've never done anything like streaming video before. Any help would be greatly appreciated. Confused | :confused:

-Ben

-- modified at 3:29 Friday 9th June, 2006

Re: Streaming Video in MFC or any language [modified]

Sarath C8-Jun-06 22:37

Sarath C

8-Jun-06 22:37

Check DirectShow

Sa^Rath.

"Don't Do Different things... Do Things Differently..."

Understanding State Pattern in C++

Filedialog and DLL

Nicolai M8-Jun-06 20:52

Nicolai M

8-Jun-06 20:52

I'm making a WTL style DLL with an opening dialog, but i also need to be able to browse files from that DLL. I've triedto use both CFileDialog and OPENFILENAME structure, but neither is working, even though they are working fine in the executeable Confused | :confused:

OPENFILENAME:

/*OPENFILENAME ofn;       // common dialog box structure<br />
	char szFile[260];       // buffer for file name<br />
	HWND hwnd;              // owner window<br />
	//HANDLE hf;              // file handle<br />
<br />
	// Initialize OPENFILENAME<br />
	ZeroMemory(&ofn, sizeof(ofn));<br />
	ofn.lStructSize = sizeof(ofn);<br />
	ofn.hwndOwner = hwnd;<br />
	ofn.lpstrFile = szFile;<br />
	//<br />
	// Set lpstrFile[0] to '\0' so that GetOpenFileName does not <br />
	// use the contents of szFile to initialize itself.<br />
	//<br />
	ofn.lpstrFile[0] = '\0';<br />
	ofn.nMaxFile = sizeof(szFile);<br />
	ofn.lpstrFilter = "All\0*.*\0Text\0*.TXT\0";<br />
	ofn.nFilterIndex = 1;<br />
	ofn.lpstrFileTitle = NULL;<br />
	ofn.nMaxFileTitle = 0;<br />
	ofn.lpstrInitialDir = NULL;<br />
	ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;<br />
<br />
	if(GetOpenFileName(&ofn) == IDOK)<br />
		SetDlgItemText(IDC_EDIT1, ofn.lpstrFile);

CFileDialog:

CFileDialog dlg(TRUE);<br />
	if(dlg.DoModal() == IDOK)<br />
		SetDlgItemText(IDC_EDIT1, dlg.m_szFileName);

Re: Filedialog and DLL

Cedric Moonen8-Jun-06 20:57

Cedric Moonen

8-Jun-06 20:57

hugo_fra_tv2 wrote:
I've triedto use both CFileDialog and OPENFILENAME structure, but neither is working

What does 'not working' mean ? You get a crash, it doesn't compile, it does not do what you expected (and explain what you expected and what you get instead), ...
We cannot guess what's happening.

Cédric Moonen
Software developer

Charting control

Re: Filedialog and DLL

Nicolai M8-Jun-06 22:56

Nicolai M

8-Jun-06 22:56

Yes, the windows file browsing dialog never appears, focus turns to nothing and the whole application is locking.

Re: Filedialog and DLL

Viorel.9-Jun-06 0:03

Viorel.

9-Jun-06 0:03

Since your application seems to be a non-MFC one, I suppose that CFileDialog does not work because of some missing initialization stuff, required by MFC. Maybe you should call AfxMainInit once in your DLL?

The variant without MFC, based on GetOpenFileName, probably requires a previous call of InitCommonControlsEx initialization function.

See also a related comment here[^].

Re: Filedialog and DLL

Nicolai M9-Jun-06 2:02

Nicolai M

9-Jun-06 2:02

Basicly what i've done:
Use the WTL Project Wizard to create a DoModal Dialog based application, replaced _tWinMain with DllMain, and set the file output type to DLL

Re: Filedialog and DLL

Hamid_RT8-Jun-06 21:06

Hamid_RT

8-Jun-06 21:06

Can you be more specific Do you get error?

whitesky

Re: Filedialog and DLL

Viorel.8-Jun-06 21:17

Viorel.

8-Jun-06 21:17

GetOpenFileName actually returns a BOOL value, not a code which can be compared with IDOK. I think you should use a simple if. If it returns FALSE, you can see what is the problem using CommDlgExtendedError:

if(GetOpenFileName(&ofn))
{
    SetDlgItemText(IDC_EDIT1, ofn.lpstrFile);
}
else
{
    DWORD error = CommDlgExtendedError();
}

Then investigate the error code, or tell us.

Re: Filedialog and DLL

Sarath C8-Jun-06 22:01

Sarath C

8-Jun-06 22:01

hugo_fra_tv2 wrote:
ofn.lpstrFilter = "All\0*.*\0Text\0*.TXT\0";

This might be the problem normally we specify the filter as follows (seperated with "|" and ends with "||"
e.g

char* pszeFilter = "*.*|*.*|text|*.txt|Music|*.mp3||";

Sa^Rath.

"Don't Do Different things... Do Things Differently..."

Understanding State Pattern in C++

Re: Filedialog and DLL

Viorel.8-Jun-06 22:25

Viorel.

8-Jun-06 22:25

The separator depends on approach used. If the filter is set in OPENFILENAME structure directly, then '\0' must be used. If the filter is set in the constructor of CFileDialog object, then '|' is used. CFileDialog will convert it to '\0'.

DateTimePicker

ensger8-Jun-06 20:32

ensger

8-Jun-06 20:32

Is there a possibility to create a datetimepicker in a dialog without days (only with month and year)?

Thanks, Gerhard

Re: DateTimePicker

Monty²8-Jun-06 21:16

Monty²

8-Jun-06 21:16

Not without Owner/Custom draw.

You know you're obsessed with computer graphics when you're outside and you look up at the trees and think, "Wow! That's spectacular resolution!"

Re: DateTimePicker

ensger8-Jun-06 21:56

ensger

8-Jun-06 21:56

Sounds complicated, so I will look for another way to enter month and year.

Thank you for your fast answer, Gerhard

Re: DateTimePicker

Nishad S8-Jun-06 22:10

Nishad S

8-Jun-06 22:10

If you are interested try a custom control, using COleDateTime class. Smile | :)

- NS -

Re: DateTimePicker [modified]

_AnsHUMAN_ 8-Jun-06 22:46

_AnsHUMAN_

8-Jun-06 22:46

m_datetimepicker.SetFormat ("yy-MM");<br />
can help you. <br />
<br />
Somethings seem HARD to do, until we know how to do them.<br />
;-)<br />
_AnShUmAn_<br />
<br />
<br />
 -- modified at 4:47 Friday 9th June, 2006

Re: DateTimePicker [modified]

ensger9-Jun-06 3:27

ensger

9-Jun-06 3:27

Hallo,

But some things are HARD, even you got an answer that seems to be the solution.

I made my dialog with the wizzard and got a diaolg.cpp with a DoDataExchange-function like this:

DDX_DateTimeCtrl(pDX, IDC_DATETIMEPICKER1, m_begin);

m_begin is a COleDateTime-variable. But where and how do I have to place your Set.Format-code? I tried it with IDC-DATETIMEPICKER1 in an OnInital-function , in a PRECREATE-function, I tried it with the m_begin-variable, nothing works.

Thanks in advance, Gerhard

Re: DateTimePicker [modified]

_AnsHUMAN_ 9-Jun-06 3:40

_AnsHUMAN_

9-Jun-06 3:40

m_begin should be a control variable for the date time picker control .
Right click on the datetime picker contrl > add variable m_begin

in on initdialog use
m_begin.SetFormat()

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: DateTimePicker

ensger9-Jun-06 9:18

ensger

9-Jun-06 9:18

Hallo,

That works wonderful in my dialog, but I have a last problem. How can I get the valus of year and month at the end of the dialog. What I did till now was:

year.Format("%i", dialog.m_begin.GetYear());
month.Format("%i", dialog.m_begin.GetMonth());

And that doesn't work any more Sigh | :sigh:

year and month are CStrings, but would not be a probelm if it would be int ore something other.

It's like it is always - the solution of one problem results in another problem Cry | :((

Thanks - Gerhard

Re: DateTimePicker

Michael Dunn9-Jun-06 1:14

Michael Dunn

9-Jun-06 1:14

Check out Creating a Time Picker with no Seconds Field[^] - you can use a similar technique to change the date format that the DTP control shows

--Mike--
Visual C++ MVP Cool | :cool:

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