Re: Win32 Timer and a C++ Class? - C / C++ / MFC Discussion Boards

Re: Getting cursor position in editbox and placing the text there???

Cedric Moonen13-Jun-08 2:41

Cedric Moonen

13-Jun-08 2:41

Use CEdit::ReplaceSel[^].

Cédric Moonen
Software developer

Charting control [v1.4]

Re: Getting cursor position in editbox and placing the text there???

VCProgrammer13-Jun-08 2:49

VCProgrammer

13-Jun-08 2:49

i don't want to replace i want to append new text with older text but the text should be appended where the cursor is placed....

Re: Getting cursor position in editbox and placing the text there???

Rajesh R Subramanian13-Jun-08 2:50

Rajesh R Subramanian

13-Jun-08 2:50

You want to append text or insert text in the middle? They are two different things!

For appending, you could use GetWindowText() followed by a SetWindowText()

For inserting, you could use ReplaceSel(), as Cedric already pointed out.

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.
Codeproject.com: Visual C++ MVP

Re: Getting cursor position in editbox and placing the text there???

Cedric Moonen13-Jun-08 2:55

Cedric Moonen

13-Jun-08 2:55

Did you follow the link and read the information ?
Did you understand this sentence ?
If there is no current selection, the replacement text is inserted at the current cursor location.

Isn't that what you are looking for ?

Cédric Moonen
Software developer

Charting control [v1.4]

Re: Getting cursor position in editbox and placing the text there???

VCProgrammer13-Jun-08 2:56

VCProgrammer

13-Jun-08 2:56

Ya actually sorry i didn't read whole sentence.....
thanks...
i'll try it

Re: Getting cursor position in editbox and placing the text there???

bulg13-Jun-08 10:13

bulg

13-Jun-08 10:13

sounds like a case of the /. "google makes us dumber" syndrome

Win32 Timer and a C++ Class?

Steffen Lange13-Jun-08 1:56

Steffen Lange

13-Jun-08 1:56

In a Win32 console application a timer should call a member function of a C++ class.
But how can I make the API function SetTimer to call this member function?

Thanks in advance.

Re: Win32 Timer and a C++ Class?

CPallini13-Jun-08 2:13

CPallini

13-Jun-08 2:13

Pass the class pointer as the argument of the timer callback function.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

Re: Win32 Timer and a C++ Class?

Mark Salsbery13-Jun-08 5:39

Mark Salsbery

13-Jun-08 5:39

SetTimer() doesn't take a member function as an argument.

You can, however, use a static member function with the right signature:

class MyClass
{
...
static void CALLBACK TimerProc(HWND hwnd, UINT uMsg, UINT_PTR idEvent, DWORD dwTime);
...
};

You can pass &MyClass::TimerProc to SetTimer().

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Win32 Timer and a C++ Class?

Steffen Lange14-Jun-08 9:05

Steffen Lange

14-Jun-08 9:05

Mark Salsbery wrote:
SetTimer() doesn't take a member function as an argument.

I was afraid of that. Frown | :(

Thanks anyway.

Re: Win32 Timer and a C++ Class?

Mark Salsbery14-Jun-08 10:03

Mark Salsbery

14-Jun-08 10:03

Steffen Lange wrote:
I was afraid of that.

Why is that a problem?

You can pass a function pointer, it just can't be a non-static class
member function.

If making the method static is the problem, you could use a multimedia timer[^]
instead. The multimedia timers let you have a pointer passed to
the callback which you can cast to a pointer to an object of your
class...

class MyClass
{
...
   static void CALLBACK MyTimerProc(UINT uID, UINT uMsg, DWORD_PTR dwUser, DWORD dw1, DWORD dw2);
...
public:
   void SomeFuncThatCreatesATimer();
};

void SomeFuncThatCreatesATimer()
{
...
   ::timeSetEvent(..., ..., &MyClass::MyTimerProc, this, TIME_PERIODIC);
...
}

void CALLBACK MyClass::MyTimerProc(UINT uID, UINT uMsg, DWORD_PTR dwUser, DWORD dw1, DWORD dw2)
{
   MyClass *pThis = (MyClass *)dwUser;

...access non-static MyClass members using pThis...
}

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Dialog window help

Kwanalouie13-Jun-08 1:52

Kwanalouie

13-Jun-08 1:52

Using Visual C++ 6.0 MFC in SDI application

I have a view that includes a dialog window from which the user can select different options. I do not want the user to be able to close that window. When the view changes, that dialog window will close automatically. However, I noticed that when the window is displayed, if the user hits the "escape key" esc, the window disappears. How do I prevent that from happening?
Thanks

Re: Dialog window help

SandipG 13-Jun-08 1:58

SandipG

13-Jun-08 1:58

Handle OnCancel() (IDCANCEL) in the dialog box.
comment the base class call CDialog::OnCancel().

Regards,
Sandip.

Re: Dialog window help

Michael Dunn13-Jun-08 10:39

Michael Dunn

13-Jun-08 10:39

See the FAQ:
7.4 How do I prevent a dialog from closing when the user presses Enter or Esc?[^]

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

LINKS~! CP SearchBar v3.0 | C++ Forum FAQ

"That's what's great about doing user interface work. No matter what you do, people will say that what you did was idiotic." -- Raymond Chen

Re: Dialog window help

Kwanalouie14-Jun-08 0:28

Kwanalouie

14-Jun-08 0:28

That's a great link!

Insert new row in CListCtrl: need to improve the speed

tataxin12-Jun-08 22:37

tataxin

12-Jun-08 22:37

I have a CListCtrl, each row has a specified color.

// the list ctrl
CListCtrl myList;

// function to set color to a row
myList.SetRowColor(j, crRows.GetAt(j));

Then I need to insert some new rows, the latest is at top. Here is source code

	CArray<colorref> crRows;
	CArray<cstring> newData;
	int nNew = newData.GetCount();
	for (int i=0; i<nnew; i++="" )="" {<br="" mode="hold" />		// insert new row at top
		CString txt = newData.GetAt(i);
		myList.InsertItem(0, txt);

		// get color, depends on the real data
		COLORREF aColor = GetRowColor(txt);
		crRows.InsertAt(0, aColor)		

		// change the rest of list ctrl
		int nCnt = myList.GetItemCount();
		for (int j = 0; j<ncnt; j++="" )="" {<br="" mode="hold" />                     myList.SetRowColor(j, crRows.GetAt(j));
		}
	}
</cstring></colorref>

I works, but because of 2 loop for, the performance speed is very slow, so I have to improve it
Does anyone know what should I do in this case??
Thanks in advance Smile | :)

Re: Insert new row in CListCtrl: need to improve the speed

SandipG 12-Jun-08 23:38

SandipG

12-Jun-08 23:38

Instead of for loop you can just maintain a stack so no movements required.
Does it makes sense.

Regards,
Sandip.

Re: Insert new row in CListCtrl: need to improve the speed

tataxin13-Jun-08 1:28

tataxin

13-Jun-08 1:28

thank for your reply
but actually, i'm afraid that I don't understand how to maintain a stack??

Re: Insert new row in CListCtrl: need to improve the speed

SandipG 13-Jun-08 1:34

SandipG

13-Jun-08 1:34

why you want to maintain STL is there you just have to use it Smile | :)

Regards,
Sandip.

Re: Insert new row in CListCtrl: need to improve the speed

tataxin13-Jun-08 2:25

tataxin

13-Jun-08 2:25

STL? is that Standard Template Library?
sorry SandipG, I really don't understand what you mean. Can you explain more detail, Sigh | :sigh:

Re: Insert new row in CListCtrl: need to improve the speed

SandipG 13-Jun-08 2:55

SandipG

13-Jun-08 2:55

Yes tataxin i mean Standard template library.
instead of using CArray you can use stack which is LIFO so you dont need to move elements down after every element added.

Regards,
Sandip.

Re: Insert new row in CListCtrl: need to improve the speed

tataxin13-Jun-08 8:09

tataxin

13-Jun-08 8:09

Nice SandigG, that's what I want, Smile | :)

but I dont know how to implement this.
Can you show me more details.

Re: Insert new row in CListCtrl: need to improve the speed

tataxin15-Jun-08 14:38

tataxin

15-Jun-08 14:38

can anyone give me more details or give me some document to read about this?
thanks in advance !!

Re: Insert new row in CListCtrl: need to improve the speed

SandipG 15-Jun-08 19:55

SandipG

15-Jun-08 19:55

Look here [^]
Few more.. [^]
[^]

Regards,
Sandip.

Re: Insert new row in CListCtrl: need to improve the speed

Nibu babu thomas12-Jun-08 23:50

Nibu babu thomas

12-Jun-08 23:50

tataxin wrote:
but because of 2 loop for, the performance speed is very slow, so I have to improve it

You can call SetRedraw( FALSE ) before the for loop and SetRedraw( TRUE ) in the end or use a virtual list control (http://www.codeproject.com/KB/list/virtuallist.aspx[^]).

Nibu thomas
Microsoft MVP for VC++

Code must be written to be read, not by the compiler, but by another human being.

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