SQLConnect() - C / C++ / MFC Discussion Boards

Re: Multiple Timer Processes

David Crow17-Jun-04 5:40

David Crow

17-Jun-04 5:40

jerry1211a wrote:
How do you set up timer threads??

Calling SetTimer() within a thread.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: Multiple Timer Processes

palbano17-Jun-04 5:53

palbano

17-Jun-04 5:53

Real concurrency is only possible on multi-processor hardware. Otherwise you have the appearance of concurrency by the OS switching thread context.

The only way to acquire concurrency or even simulated concurrency is with multiple threads. If your process only has a single thread then your code executes synchronously. You can have two timers but only one at a time will execute.

For win2k and above OS you can use the CreateTimerQueueTimer() APIs which handle worker thread creation for you. Otherwise for older OS's you will have to generate your own threads.

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Re: Multiple Timer Processes

jerry1211a17-Jun-04 6:50

jerry1211a

17-Jun-04 6:50

Thanks...have a good day.

Jerry

Re: Multiple Timer Processes

toxcct17-Jun-04 7:46

toxcct

17-Jun-04 7:46

you don't have to use thread if you feel it's not needed.

you can use 2 SetTimer(). the code you have to add to make the difference btween the 2 is into the OnTimer(UINT nIDEvent) function.
just test nIDEvent. if it matches the ID of your 1st timer, then the 1st timer times out, otherwise, it is the 2nd.

and you can set like that as many timers as you want... (growing up subsequently you OnTimer() function)

TOXCCT >>> GEII power

problem with building help

dart1317-Jun-04 4:41

dart13

17-Jun-04 4:41

I have copied SDI app project from one computer to another. Visual studio on the first is installed on d: partition, so when I try to build app on second I get this error:

MySDIApp.hpj<br />
    HC5011: Error: MySDIApp.hpj : <br />
 Cannot open the file "d:\Microsoft Visual Studio\VC98\MFC\include \afxhelp.hm."

Which setting should I change to fix this problem?

Re: problem with building help

palbano17-Jun-04 4:44

palbano

17-Jun-04 4:44

There may be other ways but i have always edited the .hpj file.

pete

Re: problem with building help

dart1317-Jun-04 5:02

dart13

17-Jun-04 5:02

Thanks for help "on help";). I couldn't find hpj file on the second computer, but I found it in the folder I copied the project from and edited it.

SQLConnect()

SuzannaS17-Jun-04 4:32

SuzannaS

17-Jun-04 4:32

Hi,
I have created a SQL SERVER ODBC DSN (data source name) with an authentication using Login ID and Password.

I would like to use my DSN without specifing the Login ID and Password in my code: here it is my code:

SQLHENV henv = NULL;
SQLHDBC hdbc = NULL;
SQLHSTMT hstmt = NULL;
SQLRETURN sRet;

PTSTR szDataSource = _T("MyDSN");
PTSTR szUID = _T("LoginID");
PTSTR szPWD = _T("Password");

// Initialize the ODBC environment.
if (SQLAllocHandle(SQL_HANDLE_ENV, NULL, &henv) == SQL_ERROR)
{
WriteIntoFile("ERRORE Initialize the ODBC environment");
return false;
}

SQLSetEnvAttr(henv, SQL_ATTR_ODBC_VERSION, (void*) SQL_OV_ODBC3,SQL_IS_INTEGER);

// Allocate a connection handle and connect to the data source.
if (SQLAllocHandle(SQL_HANDLE_DBC, henv, &hdbc) == SQL_ERROR)
{
WriteIntoFile("ERRORE Allocate a connection handle");
return false;
}
if (SQLConnect(hdbc, (SQLTCHAR*) szDataSource, SQL_NTS,
(SQLTCHAR*) szUID, SQL_NTS, (SQLTCHAR*) szPWD, SQL_NTS) == SQL_ERROR)
{
WriteIntoFile("ERRORE Connect to the DataSource");
return false;
}

How can I do it?

CListCtrl & ToolTips

Gizmo7917-Jun-04 4:25

Gizmo79

17-Jun-04 4:25

How can I have tooltips when the cursor is over an item of my CListCtrl.

I have enabled ToolTips with CListCtrl::EnableToolTips() but it didn't works better ... Confused | :confused:

I've read something about CToolTipCtrl, but I don't know how to make relations between CListCtrl items & ToolTip's text of the CToolTipCtrl ....

--
Gizmo

Re: CListCtrl & ToolTips

palbano17-Jun-04 5:19

palbano

17-Jun-04 5:19

http://www.codeproject.com/listctrl/ctooltiplistctrl.asp[^]

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Re: CListCtrl & ToolTips

Gizmo7917-Jun-04 5:55

Gizmo79

17-Jun-04 5:55

it's ok, I create my own class from CListCtrl and I have used TTN_NEEDTEXTA & TTN_NEEDTEXTW event to do it ...

Tanks to Hans Dietrich and his XListCtrl source code ... Poke tongue | ;-P

--
Gizmo

Anybody use SetWorldTransform?

CodeHead17-Jun-04 3:36

CodeHead

17-Jun-04 3:36

I have an app that prints a calibrated tape. I would like to print in mirror image. If I use
SetGraphicsMode(pDC->GetSafeHdc(), GM_ADVANCED); and then SetWorldTransform, I can get the mirror image, but when I print or do a print preview, the text is simple printed upside down!
I narrowed the offender to the SetGraphicsMode(pDC->GetSafeHdc(), GM_ADVANCED); call. Just adding SetGraphicsMode, without any other calls, results in the non-mirror image like you would expect, but the printouts give you upside down text. Has anyone ever worked around this?
TIA
Eric
www.compufoil.com

Inserting a property sheet/ tab in a dialog box

aarti vimal17-Jun-04 3:24

aarti vimal

17-Jun-04 3:24

okay i'll describe my problem in a greater detail.I already have dialog box in which some of the controls are workin.Now want to add a property sheet/tab(I'm confused between both), so that all the previously added controls also remain place and the tabbed control gets inserted in the dialog.I tried to insert the tabbed control by dragging it from the control box.But i does get displayed.
I m unable to proceed further.
Hope i was able to explain. Smile | :)

Aarti Vimal

Re: Inserting a property sheet/ tab in a dialog box

David Crow17-Jun-04 3:32

David Crow

17-Jun-04 3:32

aarti vimal wrote:
I tried to insert the tabbed control by dragging it from the control box.But i does get displayed.

So are you wanting it to not be displayed instead?

The tab control is added to the dialog template just like any other (e.g., edit) control. You select the control from the Controls window and then click on the dialog template. Position/size the control as necessary at that point.

What are you seeing that does not behave in this fashion?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

CTreeViewCtrl question

kfaday17-Jun-04 2:58

kfaday

17-Jun-04 2:58

Hello
i'm using a Treeview for a chat client. I've got a small problem.
I want to be able to select the item and open a menu with OnRightClick.
I've implemented the OnrightClick function, but first, i have to select the item with the left mouse button, and then do the right click.
I have to select the item first because i want to get the string of what's been selected. If i do right click over an item, the program crashes, because it doesn't know where to get the string
How could i do the two steps (left click, then right click) in only one, when i right click with the mouse?

thanks!

Re: CTreeViewCtrl question

Arjan Schouten17-Jun-04 3:12

Arjan Schouten

17-Jun-04 3:12

void C3StateTree::OnRButtonDown(UINT nFlags, CPoint point) 
{
	UINT uFlags = 0;

	HTREEITEM hItem = HitTest(point, &uFlags);

	if( uFlags & TVHT_ONITEM )
	{
		//SelectItem(hItem);

                CString sText = GetItemText(hItem);

Arjan

Re: CTreeViewCtrl question

kfaday19-Jun-04 4:19

kfaday

19-Jun-04 4:19

thanks Arjan!!

change cursor in win32

udi444417-Jun-04 2:50

udi4444

17-Jun-04 2:50

hi evrybody
i"m trienig to change my cursor during the time the app runs - first of i load the cursor in the main func
wc.hCursor = LoadCursor( NULL, IDC_ARROW );
where wc is my window and than i want to open a dialogbox where i would change my cursor in

anyone can help on how to do it ???
thanx alot

Re: change cursor in win32

Johan Rosengren17-Jun-04 5:22

Johan Rosengren

17-Jun-04 5:22

You handle the WM_SETCURSOR message in the dialogbox procedure.

Re: change cursor in win32

Scozturk17-Jun-04 5:23

Scozturk

17-Jun-04 5:23

I think you have to handle the wm_setcursor message in the dialog or window and after call it:

<br />
case WM_SETCURSOR:<br />
{<br />
      HCURSOR hCursor = LoadCursor(NULL, MAKEINTRESOURCE(IDC_MYCURSOR));<br />
      SetCursor(hCursor);<br />
      return TRUE;<br />
}<br />

I hope this helps...

Well... I am a beginner ...

Re: change cursor in win32

Michael Dunn17-Jun-04 9:36

Michael Dunn

17-Jun-04 9:36

Don't do it that way, that will load (and leak) the cursor resource every time the window gets a WM_SETCURSOR message. Load the cursor once and keep it in a member variable.

--Mike--
Personal stuff:: Ericahist | Homepage
Shareware stuff:: 1ClickPicGrabber | RightClick-Encrypt
CP stuff:: CP SearchBar v2.0.2 | C++ Forum FAQ
----
"die"
ahhhh!
"diet"
AAHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!!!!!!!

Programatically create Bitmap file: How To???

JHAKAS17-Jun-04 2:46

JHAKAS

17-Jun-04 2:46

Hi i am doing following:

From my function SaveAsBitmap

	CClientDC dc(this);<br />
	MemDC.Detach ();<br />
	MemDC.CreateCompatibleDC(&dc);<br />
<br />
	m_WfrBmp.Detach ();<br />
	m_WfrBmp.CreateCompatibleBitmap(&dc, 860, 1100);<br />
	CBitmap *pOldBitmap = (CBitmap *)MemDC.SelectObject(&m_WfrBmp);<br />
<br />
	MemDC.SetMapMode(MM_LOENGLISH);<br />
//	MemDC.PatBlt(0, 0, 860, 1100, WHITENESS);	<br />
	MemDC.SetBkMode (TRANSPARENT);<br />
	MemDC.SetBkColor (RGB(255,255,255));<br />
<br />
	MemDC.Rectangle (100,100,400,400);<br />
<br />
        // Now save the bitmap to the BMP file <br />
        Filename ="C:\\12.bmp";<br />
        CDIBSectionLite	dib;<br />
        HBITMAP hnd = (HBITMAP)m_WfrBmp.GetSafeHandle (); 	<br />
        dib.SetBitmap (hnd);<br />
        dib.Save(Filename);

I am getting Black bitmaps only.....

What is the problem...

Any help/suggestions

Leave your mark wherever you go

Re: Programatically create Bitmap file: How To???

V.17-Jun-04 2:50

17-Jun-04 2:50

get your header info and write your bitmap pixel per pixel (binary so use fwrite)

NOTE: write away like BGR and NOT RGB. For some reason it is that way. (think memory access time is the reason, but I'm not sure)

Find some info on the net about the structure of a bmp file.

good luck.

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix

Re: Programatically create Bitmap file: How To???

KarstenK17-Jun-04 4:24

KarstenK

17-Jun-04 4:24

Maybe you should Get the bits of the MemDc Dead | X|

Try this @ home. (B&B)

Re: Programatically create Bitmap file: How To???

John R. Shaw17-Jun-04 12:04

John R. Shaw

17-Jun-04 12:04

I hope there is nothing attched before you make those calls to Detach() or your program will have resource leaks.

After drawing to the bitmap via Rectangle, select pOldBitmap into MemDC. If either function SetBitmap() or Save() needs to select it into a DC, then neither one can do it until MemDC releases ownership. A bitmap can only be selected into one DC at a time.

INTP

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