C / C++ / MFC

Play avi on status bar via thread

11-Mar-08 2:35

IMHO, yes.

Re: template argument

George_George11-Mar-08 2:44

George_George

11-Mar-08 2:44

Thanks Rajkumar,

Question answered.

regards,
George

ptr_Electron11-Mar-08 1:40

11-Mar-08 1:40

I am to extract 1000's of records from database. since it takes quite some time I want play the avi file on the status bar of main frame, but the call will be made from the dialg. say on button click event I am extracting records form DB and need to play avi on the status bar, but ...

The instruction at "0x00402150" referenced memory at "0x00b9004c". The memory could not be "written".

void TestPb::OnButton1()
{

thpbar=AfxBeginThread(thPrgbar,THREAD_PRIORITY_NORMAL,0,0,NULL);
//Get 1000's records from DB ..verytime consumming process...
}

UINT TestPb::thPrgbar( LPVOID pParam )
{
CMainFrame* pFrame = (CMainFrame*)AfxGetMainWnd();
pFrame->StartAnimation( IDR_AVITEST ,1);
return (1);
}

void CMainFrame::StartAnimation( UINT id, int nPane /*=1*/ )
{
StopAnimation();
m_pAnimate = new CStatusbarAnimate; // FLASHING ERROR
m_pAnimate->Create(id, nPane);
}

void CMainFrame::StopAnimation()
{
delete m_pAnimate;
m_pAnimate = NULL;
}

bool CMainFrame::IsAnimationActive()
{
return (m_pAnimate != NULL);
}

// needed to ensure original text not visible
void CMainFrame::OnUpdateAnimate(CCmdUI* pCmdUI)
{
pCmdUI->SetText(_T(""));

modified on Tuesday, March 11, 2008 8:29 AM

Rajkumar R11-Mar-08 3:28

11-Mar-08 3:28

As you are stucking in this for a long time, i just looked in to the CStatusbarAnimate class.

Actually you don't need to start a thread to start the animation.

void TestPb::OnButton1()
{
// start animation here
CMainFrame* pFrame = (CMainFrame*)AfxGetMainWnd();
pFrame->StartAnimation( IDR_AVITEST ,1);

thpbar=AfxBeginThread(thPrgbar,THREAD_PRIORITY_NORMAL,0,0,NULL);
}

UINT TestPb::thPrgbar( LPVOID pParam )
{
//Get 1000's records from DB ..verytime consumming process...

// just before returning you may post message to Main frame to stop the animation.
return (1);
}

void CMainFrame::OnStopAnimation()
{
StopAnimation();
}

ptr_Electron11-Mar-08 4:08

11-Mar-08 4:08

Thanks you very much, Yes it is true. I really got strucked up here for a while... thanks for understanding my problem

I am modifying code of very large application, which has the same case number of times, so I looking for a simply way to do this, with out change much in the existing code, So I planed to have a thread that plays avi and call it when every required from all the dialog boxes...Am I going the right way...or is there any other work around...pls advice...

Rajkumar R11-Mar-08 4:10

11-Mar-08 4:10

Have you tries as my suggestion?

Rajkumar R11-Mar-08 5:57

How to convert char** to char array

11-Mar-08 5:57

ptr_Electron wrote:
so I looking for a simply way to do this

I suggested only to add one statement of postmessage. And move your startanimation within the thread to before creating the thread which is in the button event, And its matter of 5 minutes. If this is not simple for you, then its difficult for you my friend.

Gofur Halmurat11-Mar-08 1:33

Gofur Halmurat

11-Mar-08 1:33

Hello,

does anybody know how to convert char** to char array?

here is my code

<br />
#include stdio.h<br />
<br />
splitString(char** aString)<br />
{<br />
 char[10][10] localstring;<br />
 .....<br />
 .....<br />
 .....<br />
 /*   HERE I NEED TO CONVERT  aString to  localstring */<br />
 .....<br />
 <br />
}<br />
<br />
int main<br />
{<br />
   char[10][10] arraystring;<br />
   splitString(arraystring);<br />
   return 0;<br />
}<br />

Thanks

It is never late to learn

Maxwell Chen11-Mar-08 2:17

Maxwell Chen

11-Mar-08 2:17

You can't!

See the Section 2.10[^].

Maxwell Chen

Gofur Halmurat11-Mar-08 2:31

Gofur Halmurat

11-Mar-08 2:31

Hello,
thanks for your reply.

I think i can,
here is what i did

<br />
memcpy(localstring,aString, sizeof(localstring));<br />

But, I want localstring to point aString's address.

<br />
It is easy if<br />
char *aString, then address of aString -> &aString,<br />
if it is<br />
char **aString, then address of aString -> ??????<br />

that is the problem i dont know.
How do we get aString's address?

thanks

It is never late to learn

Rajkumar R11-Mar-08 2:45

11-Mar-08 2:45

splitString(char localstring[][10])
{
.....
.....

Is it acceptable?

Gofur Halmurat11-Mar-08 2:48

Gofur Halmurat

11-Mar-08 2:48

Hello,
thanks for your reply.

But it is not acceptable,
Because sometimes
i call splitString() function with char** parametr.

thanks

It is never late to learn

Rajkumar R11-Mar-08 5:40

11-Mar-08 5:40

Gofur Halmurat wrote:
i call splitString() function with char** parametr.

with char**, you mean simply typecast type of multidimentional array of characters or array of pointers to array. Both cannot be interchanged.

char aString[10][10] = {"Test1", "Test2", "Test3"};
char *aString2[10] = {"Test1", "Test2", "Test3"};
former uses contigious buffer while later stores pointers to some other location. So you have to be sure what kind of data the function expects.

in your example any way you can type cast like this.

char (*localString)[10][10];
localString = reinterpret_cast<char (*)[10][10]>(aString); note astring should be a multidimentional array as in your example.

if you are really expecting the muldimensional array, restrict the user by using the array in function argument.

David Crow11-Mar-08 5:34

David Crow

11-Mar-08 5:34

Gofur Halmurat wrote:
How do we get aString's address?

Its address is the same (i.e., &aString) no matter how many * precede it. The address(es) it points to is a different matter altogether.

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Bitmaps in View

Anu_Bala11-Mar-08 1:28

Anu_Bala

11-Mar-08 1:28

Hi,

For my application, i used one image from a folder to display in View window.
But I can show only one image.
But if i have three bitmaps,then i have to show these three images continuosly(like slide show) while running my EXE.
Is there possible to do this?

My code is like this
bmpFilePath = gsInstallPath + "Esim\\Pic\\" + szModelName + ".bmp" ;

hBmp = (HBITMAP)::LoadImage(NULL,bmpFilePath,IMAGE_BITMAP,0,0,LR_LOADFROMFILE|LR_CREATEDIBSECTION);

Anu

Re: Bitmaps in View

ptr_Electron11-Mar-08 1:52

Re: Bitmaps in View [modified]

11-Mar-08 1:52

well you can do that...this is to diaply each imag at intervel of Sleep() time...

CFileFind Finderff

if(SetCurrentDirectory("GIVE UR PATH")
{

BOOL bWorkingff = Finderff.FindFile("*.bmp");
bWorkingff = Finderff.FindNextFile();
strFileName = Finderff.GetFileName();

while(bWorkingff)
{
//open BITMAP from strFileName;
//Code to DIAPLay bitmap//
Sleep(100); //as per ur need
bWorkingff = Finderff.FindNextFile();
strFileName = Finderff.GetFileName();

}

}
Good Luck!!

Rajkumar R11-Mar-08 2:02

11-Mar-08 2:02

It seems you are using MFC, CImage is easy to use.
Have a look into CImage::Load, CImage::Draw.

And May be Timer messages can be used to change the image. have look at CWnd::SetTimer() and make the view to update the new image in its paint message. For that set a flag and call CWnd::InvalidateRect or CWnd::RedrawWindow() or CDocument::UpdateAllViews in the timer handler. And in your paint handler check whether image change (check flag) and draw changed image otherwise the current image.

Always try to draw only in paint handlers.

modified on Tuesday, March 11, 2008 8:20 AM

Re: Bitmaps in View

ptr_Electron11-Mar-08 2:06

11-Mar-08 2:06

Yeap ture

... Good

Ldap Auth

ika211-Mar-08 1:28

ika2

11-Mar-08 1:28

Hi,
I'm developing a tool to show several graphs. But only the users that have been succesfully authentificated by LDAP should see those graphs. I'm developing with MFC+Visual Studio 2003.
I'm not really sure how to do this. I've been reading for a while about LDAP but I'm not sure how to implement authentification by LDAP in my App.

This is just a test I have done doing copy&paste from other code, but it always returns err=0x31.

	LDAP* ld = NULL;<br />
    INT iRtn = 0; <br />
    INT connectSuccess = 0;<br />
    PCHAR pHost = NULL;<br />
	PCHAR userDN = NULL;<br />
	PCHAR pw = NULL;<br />
    ULONG version = LDAP_VERSION3;<br />
   // SecPkgContext_ConnectionInfo sslInfo;<br />
    LONG lv = 0;<br />
	CString strDomain;<br />
	CString strName;<br />
	CString strPass;<br />
    // Verify that the user passed a hostname.<br />
    GetDlgItem(IDC_DOMAIN)->GetWindowText(strDomain);<br />
	GetDlgItem(IDC_PASSWORD)->GetWindowText(strPass);<br />
    GetDlgItem(IDC_NAME)->GetWindowText(strName);<br />
	<br />
	CString dn = "CN=" + strName +",DM=" + strDomain;<br />
<br />
    // Create an LDAP session.<br />
    ld = ldap_open(pHost,0);<br />
    if (ld == NULL)<br />
		GetDlgItem(IDC_EDIT4)->SetWindowText("ldap_open failed");<br />
	else<br />
	{<br />
		GetDlgItem(IDC_EDIT4)->SetWindowText("ldap_open OK");<br />
		ld->ld_lberoptions = 0;<br />
<br />
		pw = new char [strPass.GetLength()+1];<br />
		strcpy (pw,(LPCTSTR)strPass);<br />
<br />
		userDN = new char [dn.GetLength()+1];<br />
		strcpy (userDN,(LPCTSTR)dn);<br />
<br />
		INT err = ldap_simple_bind_s( ld, userDN, pw );<br />
		CString error;<br />
		error.Format("%d", err);<br />
		GetDlgItem(IDC_EDIT4)->SetWindowText("simple bind returned " + error);<br />
	}<br />
<br />
<br />
<br />
<br />
	if (ld != NULL)<br />
      ldap_unbind_s(ld);<br />
<br />
	if(pHost!=NULL)<br />
		delete pHost;<br />
<br />
	if(userDN != NULL)<br />
		delete userDN;<br />
<br />
	if(pw != NULL)<br />
		delete pw;

Regards and sorry for my poor english

Web Programming in C++?

Wamuti11-Mar-08 0:22

Wamuti

11-Mar-08 0:22

Hi all.
I am a programmer using MFC and i am supposed to make a program that is displaying details on a web page. I have not the simplest ideas where i am supposed to start. I am using visual studio 2005. Some one told me about using C# but i am not so enthusiatic about using C#. Is there a way i can still use MFC for Web Programming? Are there any good resources in the internet to do the same. Please help. Frown | :(

Wamuti: Any man can be an island, but islands to need water around them!
Edmund Burke: No one could make a greater mistake than he who did nothing because he could do only a little.

Christian Graus11-Mar-08 0:26

Christian Graus

11-Mar-08 0:26

Wamuti wrote:
Is there a way i can still use MFC for Web Programming?

No, that's just not possible. MFC is a framework for windows apps. You need to use a framework that generals HTML. You will find that HTML is a lot more limited compared to MFC, in terms of the freedom you have to create and interact with controls. But, you have no choice. C#/ASP.NET is your best bet.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Nemanja Trifunovic11-Mar-08 3:34

Nemanja Trifunovic

11-Mar-08 3:34

Christian Graus wrote:
No, that's just not possible.

It is perfectly possible to write web applications with MFC ISAPI extensions. Whether it is the optimal approach in his case it is a different question.

Programming Blog

utf8-cpp

Wamuti11-Mar-08 21:12

Wamuti

11-Mar-08 21:12

thanks alot. I am already looking at Mad | :mad:

(can't find the hash on my keyboard!!). sharp and already loving it.though funny i have to learn how to declare a variable Wink | ;)

Oh, i love your signature!! Quite hilarious.

Christian Graus wrote:
"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne

I also doubt it's a good name for a function! Laugh | :laugh:

Wamuti: Any man can be an island, but islands to need water around them!
Edmund Burke: No one could make a greater mistake than he who did nothing because he could do only a little.

Demian Panello11-Mar-08 2:58

Demian Panello

11-Mar-08 2:58

As Christian says, .NET is your best choice for the UI in the web.
Using MFC you could create some ISAPI extensions, to interact with the data in a bussines layer.

Demian.

"I have always wished that my computer would be as easy to use as my
telephone. My wish has come true. I no longer know how to use my telephone."
-Bjarne Stroustrup, computer science professor, designer of C++
programming language (1950- )