C / C++ / MFC Discussion Boards

«_Superman_»28-Jul-09 16:42

28-Jul-09 16:42

You must confine the cursor to the rectangle area of the picture control.
In the WM_LBUTTONDOWN message handler, get the rectangle of the picture control using GetClientRect[^] and then call ClipCursor[^] to confine the cursor to the picture control.
In the WM_LBUTTONUP message handler, Call ClipCursor again with a NULL as its parameter.

«_Superman_»
I love work. It gives me something to do between weekends.

Re: Mouse drawing on picture control

kudlaty7929-Jul-09 4:26

kudlaty79

29-Jul-09 4:26

Thank you for advise. It works, however I have another problem on ClipCursor it clips not to the picture control rectangle, but to the rectangle which has size of the picture control and it begins in the top-left corner of the screen. I guess that i have move this area over my picture control, but how to find coordinates of the top-left corner of the picture control ??

Re: Mouse drawing on picture control

«_Superman_»29-Jul-09 18:26

«_Superman_»

29-Jul-09 18:26

You need to use ScreenToClient[^].

«_Superman_»
I love work. It gives me something to do between weekends.

counting the number of output lines

neha_rai28-Jul-09 11:03

neha_rai

28-Jul-09 11:03

while working in vc++ i am getting stuck with a small thing...

in the out put screen suppose i am getting

output line 1
output line 2
output line 3
output line 4

now i just wish to output the total output lines are 4 ???

Re: counting the number of output lines

Maximilien28-Jul-09 13:53

Maximilien

28-Jul-09 13:53

Can't you just count them while they are generated ? or maybe there is a counter somewhere that sets the number of lines generated that you could use ?

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Re: counting the number of output lines

«_Superman_»28-Jul-09 16:46

«_Superman_»

28-Jul-09 16:46

You could use string::getline[^] in a loop to read the file line by line till the end of the file. In this loop you can have a counter which counts the number of lines in the file.

«_Superman_»
I love work. It gives me something to do between weekends.

How to access the registry using c language?

msgreat28-Jul-09 8:58

msgreat

28-Jul-09 8:58

How to access the registry using c language?
What is the header file I needed to do this task?

WHERE THERE IS A WILL THERE IS A WAY

-MS

Re: How to access the registry using c language?

Randor 28-Jul-09 9:48

Randor

28-Jul-09 9:48

msgreat wrote:
How to access the registry using c language?

By using the Windows API Registry Functions[^]

msgreat wrote:
What is the header file I needed to do this task?

You should #include Windows.h which will include Winreg.h for you. You may need to link with Advapi32.lib.

Best Wishes,
-David Delaune

Re: How to access the registry using c language?

msgreat29-Jul-09 3:38

msgreat

29-Jul-09 3:38

thanks sir for the reply,

is it possible in turbo c?

Where there is a will there is a way

-MS

Re: How to access the registry using c language?

Randor 29-Jul-09 4:15

Randor

29-Jul-09 4:15

msgreat wrote:
is it possible in turbo c?

Unfortunately I dont think the old TurboC 16 bit compiler will support the __stdcall calling convention[^]

Best Wishes,
-David Delaune

Can i find file location by using mouse programming?

WindowsVsLinux28-Jul-09 8:26

WindowsVsLinux

28-Jul-09 8:26

Hi,
I want to know about mouse programming.Actually i want to do is that there is a *.docx file in my computer(windows-XP)and i have a c program which can read the content of *.docx file.so first i have to give input(the location of the *.docx file) to that C program then it can read the content of that *.docx file.I want that when i click on *.docx file then it will be input for that C program.I want to ask you also that can i find file location by using mouse programming?So how can i do this???
Please help me..... Please....

Ravi Joshi

Re: Can i find file location by using mouse programming?

Maximilien28-Jul-09 8:45

Maximilien

28-Jul-09 8:45

If, and that's a big IF, I understand correctly ...

Have a look at the topic of "file association"; google for that and you should be able to
find a lot of information on how to associate a file type/name/extension, in your case a docx file
to a particular application.

The easiest way, non-programatically, is to right-click on the docx file and choose "Open With" and
select the "Choose default program" (that's on vista, I don't have XP) and select your application.

ravi 12 wrote:
I want to ask you also that can i find file location by using mouse programming?So how can i do this???

That, I don't know, what is "mouse programming" ?

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counterpart in C++ of C#'s UrlEncodeUnicode

manchukuo28-Jul-09 6:25

manchukuo

28-Jul-09 6:25

Hi how can i achieve the same functionality of UrlEncodeUnicode in MFC i mean the The Unicode string in %uXXXX notation.

Thanks

Re: counterpart in C++ of C#'s UrlEncodeUnicode

David Crow28-Jul-09 7:16

David Crow

28-Jul-09 7:16

Are you wanting something like UrlEscape() or UrlCanonicalize()?

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

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Re: counterpart in C++ of C#'s UrlEncodeUnicode

manchukuo2-Aug-09 19:27

manchukuo

2-Aug-09 19:27

David i can not make it work with Chinese chars or any other chars above 255 Frown | :(

must i write my own UrlEncodeUnicode function?

performance counter with instance for physical components

De@r28-Jul-09 4:18

De@r

28-Jul-09 4:18

Hi,

I have added the counter in a category with instance. I want to assign the value to counter and monitor this counter. I can do it same things if i do not use the instance but if i use the instance then value is not being incremented.So i would appreciate if anyone can help me.

Thanks!

Thanks
vijay

LOGFONT

kumar sanghvi28-Jul-09 4:08

kumar sanghvi

28-Jul-09 4:08

Hi,
im able to calculate the font height based on the give FontSize as follows...
LOGFONT lf;
int nFontSize=20;
SecureZeroMemory(&lf, sizeof(lf));
lf.lfHeight = -MulDiv(nFontSize, GetDeviceCaps(hDC, LOGPIXELSY), POINTSPERINCH);
but how can i calculate the width of the font for the give FontSize ie..
lf.lfWidth...?..

Re: LOGFONT

«_Superman_»28-Jul-09 4:18

«_Superman_»

28-Jul-09 4:18

The width of each character in a font is different, unless it is a monospaced font.
You can use GetTextMetrics[^] to get the average width of the characters of a font.

«_Superman_»
I love work. It gives me something to do between weekends.

Re: LOGFONT

kumar sanghvi28-Jul-09 4:55

kumar sanghvi

28-Jul-09 4:55

Thanks for ur Reply...
Pls have a look over the post which i have posted just 5 hrs back...regarding

SetcolumnWidth

Strange error in CDatabase::Close()???

Arrin28-Jul-09 3:52

Arrin

28-Jul-09 3:52

Hi,
if i debug my application, and want to close them, i receive sometimes this strange error in

// Disconnect connection
void CDatabase::Close()
{
	ASSERT_VALID(this);

	// Close any open recordsets
	AfxLockGlobals(CRIT_ODBC);
	TRY
	{
		while (!m_listRecordsets.IsEmpty())
		{
			CRecordset* pSet = (CRecordset*)m_listRecordsets.GetHead();
			pSet->Close();  // will implicitly remove from list
			pSet->m_pDatabase = NULL;
		}
	}
	CATCH_ALL(e)
	{
		AfxUnlockGlobals(CRIT_ODBC);
		THROW_LAST();
	}
	END_CATCH_ALL
	AfxUnlockGlobals(CRIT_ODBC);

	if (m_hdbc != SQL_NULL_HDBC)
	{
		RETCODE nRetCode;
		AFX_SQL_SYNC(::SQLDisconnect(m_hdbc)); // here is error???
		AFX_SQL_SYNC(::SQLFreeConnect(m_hdbc));
		m_hdbc = SQL_NULL_HDBC;

		_AFX_DB_STATE* pDbState = _afxDbState;

		AfxLockGlobals(CRIT_ODBC);
		ASSERT(pDbState->m_nAllocatedConnections != 0);
		pDbState->m_nAllocatedConnections--;
		AfxUnlockGlobals(CRIT_ODBC);
	}
}

But the best is i dont habe any kind of database in my project included????
Does any one have a answer for this issue???

thanks for any help!
Arrin

Re: Strange error in CDatabase::Close()???

«_Superman_»28-Jul-09 4:00

«_Superman_»

28-Jul-09 4:00

Look at the call stack and you can figure out the sequence of functions that are being called.
From this you can understand how the control reached that particular function.

«_Superman_»
I love work. It gives me something to do between weekends.

Re: Strange error in CDatabase::Close()???

Arrin28-Jul-09 4:03

Arrin

28-Jul-09 4:03

Hi,
thanks for answer!!

arrin

Window TopMost window on top???

Arrin28-Jul-09 3:39

Arrin

28-Jul-09 3:39

Hello community,
how to create a second window that is always on top of a main window,
so if i click on the main window that this pop up window stay on top until my function is finished??!?
I create a simple dialog with the resource editor and set "Set Foreground" to true,
but even if i click on the main dialog this new little dialog is in the background, how to avoid this?
If i set "Topmost" to true, than is my pop up dialog always on top, but for all other windows too,
and i like that hi is only for my main dialog in the foreground!?

Thanks for help
Arrin

EDIT: after i show my child dialog and bring him to top i disable my main dialog to make him unklickable and when my funktion is finished i enable him again,
but im not sure that this is the right way!?

// in my funktion:
dlgProgress.ShowWindow(SW_SHOW);
dlgProgress.SetForegroundWindow();
EnableWindow(FALSE); // for main dialog
// after funktion:
EnableWindow(TRUE); // for main dialog

Re: Window TopMost window on top???

«_Superman_»28-Jul-09 3:51

«_Superman_»

28-Jul-09 3:51

Looks like you need a modal dialog.
If you're using MFC, call CDialog::DoModal[^].
Otherwise call DialogBox[^].

«_Superman_»
I love work. It gives me something to do between weekends.

Re: Window TopMost window on top???

john john mackey28-Jul-09 11:37

john john mackey

28-Jul-09 11:37

I may have had a similar problem back several months ago. I have a modeless PropertySheet (a modeless tabbed dialog window) separate from my main Doc-View window.

I created my modeless PropertySheet window:

<br />
// Modeless property sheet - with parent window as such and call to SetWindowPos() allows for property sheet to be on top<br />
m_pSettings->Create(this, WS_SYSMENU | WS_MINIMIZEBOX | WS_POPUP | WS_CAPTION | DS_MODALFRAME | DS_CONTEXTHELP, WS_EX_DLGMODALFRAME);<br />
m_pSettings->SetWindowPos(this,0,0,0,0,SWP_NOMOVE | SWP_NOSIZE);<br />

I do recall that there was something special to this (modeless property sheet) and the peeps here helped me out!

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