Re: SendMessege() - C / C++ / MFC Discussion Boards

Re: CRecordSet::Update() or ::Edit()

3-Jan-02 9:23

i've used crecordset::none in the openflags!

Re: CRecordSet::Update() or ::Edit()

Carlos Antollini3-Jan-02 9:37

Carlos Antollini

3-Jan-02 9:37

For make a Recordset updatable you need to open the table editing all Fields. Some times if you make a select that include oll the index fields, you will must have no problems, but sometimes that don't works.
Is more secure to open the table, (The sheet in your case) in the CRecordset::Open()...

Best Regards

Carlos Antollini.
Sonork ID 100.10529 cantollini

Re: CRecordSet::Update() or ::Edit()

5-Jan-02 9:23

m_clientset is a Object of CClientSet and CClientSet is class(created with the class wizard). In the Excel table there is one Database(one Sheet) which is called "Kunden". The User-DSN is named CASAK and it´s a Microsoft Excel Driver(97-2000) and is prepared for only this one file.

m_clientset.Open(CRecordset::dynaset,"Kunden",CRecordset::none);
if(!m_clientset.CanUpdate())
AfxMessageBox("no update");
if(!m_clientset.CanTransact())
AfxMessageBox("no transact");

I don't know how shall I continue.
Confused | :confused:

Karsti

creating an array from a variable? (CString mystring[variable] )

Kuniva3-Jan-02 6:41

Kuniva

3-Jan-02 6:41

How can i create a string array from a variable amount like for example this:

<br />
int Count = 99;<br />
CString Data[Count];<br />

???

Kuniva

Re: creating an array from a variable? (CString mystring[variable] )

Nemanja Trifunovic3-Jan-02 7:55

Nemanja Trifunovic

3-Jan-02 7:55

Use CStringArray, or STL vector <CString>

I vote pro drink Beer | [beer]

SendMessege()

Ever12343-Jan-02 6:17

Ever1234

3-Jan-02 6:17

Could someone clear this up for me. Like tell me all the stuff about it.

"To wonder is to begin to understand"

Re: SendMessege()

Ravi Bhavnani3-Jan-02 6:31

Ravi Bhavnani

3-Jan-02 6:31

SendMessage() sends a message to a window. This means, it places the message in the target window's message queue, waits for it to be processed, and then returns. PostMessage() simply places the message in the target's queue and returns immediately.

/ravi

"There is always one more bug..."
ravib@ravib.com
http://www.ravib.com

Re: SendMessege()

Kuniva3-Jan-02 6:35

Kuniva

3-Jan-02 6:35

uh, i dont know all about it but i believe it is just a function to send certain messages to a window like this:

<br />
SendMessage(WM_CLOSE,0,0);<br />

This for instance would send a WM_CLOSE message to your window and if that window has a handler for the message to close it, the window will be closed. There's all sorts of messages (see winuser.h). WM means its a window message, you also have messages for buttons and other objects, for instance, button messages start with "BN".
The two 0's are the wParam and the lParam, these are optional parameters, for example if a window receives a WM_COMMAND message it means someone pressed a button or did another command, then you can find what command by looking at the wParam.

Kuniva

Connect to internet using standard windows connecting "system"

Rickard Andersson²⁰3-Jan-02 6:01

Rickard Andersson²⁰

3-Jan-02 6:01

I want my app to launch the standard Internet connection. That one you create to connect to internet.
I know the InternetDial function only... is there another better API or something?

The problem is I don't know one of the parameters:

lpdwConnection
Address of an unsigned long integer value containing the number associated to the connection.

How to get known of that?

------------------------------
©0d3 ©®4©k3® - That's me! Smile | :)

------------------------------

Re: Connect to internet using standard windows connecting "system"

Not Active3-Jan-02 7:03

Not Active

3-Jan-02 7:03

lpdwConnection is an out parameter. You don't need to know it, it will be returned to you.

You may also want to look into InternetAutodial or InternetGoOnline

Re: Connect to internet using standard windows connecting "system"

Vladimir Georgiev4-Jan-02 10:26

Vladimir Georgiev

4-Jan-02 10:26

Maybe you should look at the RasDial() function at the MSDN library, and rate my posting if it helped you Smile | :)

Enjoy your life...

How to Edit Recordset?

Mazdak3-Jan-02 5:28

Mazdak

3-Jan-02 5:28

I want to write database application,I want to Edit some of
my recordsets.I used this code but I don't know how to edit
recordsets:

CDatabase aDB;

try
{
aDB.OpenEx("DSN=MyDSN");
CRecordset aRS(&aDB);
aRS.Open(CRecordset::dynaset,"SELECT *from mytable");

while(!aRS.IsEOF())
{
CString strValue;
aRS.GetFieldValue(short(5),strValue);
CString str;

if(/*something here*/)
{
Confused | :confused:

???????????
aRS.Edit();
Confused | :confused:

?????????????
}
aRS.MoveNext();
}
aRS.Close();
aDB.Close();

}
catch(CDBException *ex)
{
TCHAR buf[255];
ex->GetErrorMessage(buf,255);
CString str;
AfxMessageBox(str);
}

Passing a CListBox to a function

Kuniva3-Jan-02 5:14

Kuniva

3-Jan-02 5:14

Is there any way to pass a CListBox control to a function so it can be used in the function and so you can use the function with the different listboxes of a dialog. Lets just say for example i want to write a function to clear a CListBox control:

<br />
void ClearListBox(CListBox list)<br />
{<br />
int count = list.GetCount();<br />
CString Data[999];<br />
<br />
for(int i=0;i<=count-1;i++)<br />
{<br />
list.DeleteString(i);<br />
}<br />

and to use it i'd do this:

<br />
ClearListBox(m_Listone);<br />
ClearListBox(m_Listtwo);<br />
...<br />

Whats the easiest way to do something like this?

Kuniva

Re: Passing a CListBox to a function

l a u r e n3-Jan-02 8:02

l a u r e n

3-Jan-02 8:02

list.resetcontent() ?

---
"every year we invent better idiot proof systems and every year they invent better idiots ... and the linux zealots still aren't being sterilized"

Re: Passing a CListBox to a function

Kuniva3-Jan-02 8:06

Kuniva

3-Jan-02 8:06

sorry to disappoint you, i'm not one of those idiots, it was the matter that concerned me, the problem was only hypothetically speaking...
Thanks anyways.

Kuniva

Re: Passing a CListBox to a function

Michael Dunn3-Jan-02 8:40

Michael Dunn

3-Jan-02 8:40

Change it to:

void ClearListBox(CListBox& list)

Passing a reference avoids making a copy (which I assume was the problem you ran into).

--Mike--
My really out-of-date homepage
Buffy's on. Gotta go, bye!
Sonork - 100.10414 AcidHelm
Big fan of Alyson Hannigan.

Re: Passing a CListBox to a function

Ravi Bhavnani3-Jan-02 8:51

Ravi Bhavnani

3-Jan-02 8:51

How about:

void ClearListBox (CListBox* pListBox)
{
  ASSERT (pListBox != NULL);
  if (pListBox != NULL) {
     pListBox->ResetContent();
  }
}

To use it, do:

ClearListBox (&m_ListOne);
ClearListBox (&m_ListTwo);

/ravi

"There is always one more bug..."
ravib@ravib.com
http://www.ravib.com

Passing a CListBox to a function

Kuniva3-Jan-02 5:04

Kuniva

3-Jan-02 5:04

<br />
void ClearListBox(CListBox list)<br />
{<br />
int count = list.GetCount();<br />
CString Data[999];<br />
<br />
for(int i=0;i<=count-1;i++)<br />
{<br />
list.DeleteString(i);<br />
}<br />

and to use it i'd do this:

<br />
ClearListBox(m_Listone);<br />
ClearListBox(m_Listtwo);<br />
...<br />

Whats the easiest way to do something like this?

Kuniva
:p

Re: Passing a CListBox to a function

Philip Patrick3-Jan-02 5:09

Philip Patrick

3-Jan-02 5:09

Instead of passing the whole ListBox, pass a reference to it or pointer. Like this:
void ClearListBox(CListBox &list);
or
void ClearListBox(CListBox *list);

and call it like this:

ClearListBox(m_Listone);
or
ClearListBox(&m_Listone); (in case of pointer)

Philip Patrick
"Two beer or not two beer?" <shakesbeer>
Web-site: www.saintopatrick.com

Re: Passing a CListBox to a function

Nemanja Trifunovic3-Jan-02 5:12

Nemanja Trifunovic

3-Jan-02 5:12

You were faster. Wink | ;)

I vote pro drink Beer | [beer]

Re: Passing a CListBox to a function

Philip Patrick3-Jan-02 5:22

Philip Patrick

3-Jan-02 5:22

lol

cheers

Philip Patrick
"Two beer or not two beer?" <shakesbeer>
Web-site: www.saintopatrick.com

Re: Passing a CListBox to a function

Nemanja Trifunovic3-Jan-02 5:10

Nemanja Trifunovic

3-Jan-02 5:10

void ClearListBox(CListBox* list)

void ClearListBox(CListBox& list)

I vote pro drink Beer | [beer]

lol thanks guys

Kuniva3-Jan-02 6:38

Kuniva

3-Jan-02 6:38

hehe, thought i should use a pointer there just didn't know how Wink | ;)

Kuniva

Want, take, have.
(oh btw, best way of learning some language is by looking at examples, start large!) :p

named pipes & createevent

Darren Schroeder3-Jan-02 4:41

Darren Schroeder

3-Jan-02 4:41

Does anyone have a sample program that will create a named pipe using CreateEvent()? I source to a program that uses OpenEvent() and I'm reverse engineering it. I do not have the piece that creates the pipe so I'm not sure how to do it.

Thanks!

Re: named pipes & createevent

Philip Patrick3-Jan-02 5:06

Philip Patrick

3-Jan-02 5:06

CreateEvent() creates.... an event and not a pipe Smile | :)

to create a named pipe use CreateNamedPipe()

lol Big Grin | :-D

Philip Patrick
"Two beer or not two beer?" <shakesbeer>
Web-site: www.saintopatrick.com

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