C / C++ / MFC Discussion Boards

Andre Massada30-Aug-04 9:02

30-Aug-04 9:02

KaЯl wrote:
what is flickering, is it the dialog box itself or the controls embedded in the dialog box?

No, it's not the dialog box that flickers, some of the contrlols(picture control, some text controls). Do i have to control the flickering for each of them ? (the weird part is that if i do nothing on my OnPaint and return FALSE on OnEraseBkgnd, the background does not refreshes, but ALL the flickering is gone and the controls are OK)

Re: MemDC !!!

KaЯl31-Aug-04 3:16

KaЯl

31-Aug-04 3:16

So, you were right, the problem isn't that simple! The problem comes from the controls embedded in the dialog box, and how to redraw them, knowing than some like the static controls don't draw the background by themselves.
If we want to do the painting of the dialog box through the CmyDialog::OnPaint method, then we have to paint everything by ourselves (forget what I said about DefWindowProc, I was wrong, the MFC architecture doesn't use the WPARAM of the WM_PAINT message, it won't use the DC we are providing so we can't use the base class), the dialog box and its child windows. Sadly, I didn't found yet an easy solution to indicate to the child windows how to use the MemDC we build Sigh | :sigh:

Собой остаться дольше...

Having trouble with arrays.

nigma_x29-Aug-04 9:18

nigma_x

29-Aug-04 9:18

I'm using Visual C++.net 2002. I'm using CIni in an MFC from this site. http://www.codeproject.com/cpp/CIni.asp#xx909443xx. The problem I'm having is I Can declare the CStringArray in the function. Pass it to GetKeyNames. I'm unable to access any of the elements in the Array. Don't know If I'm declaring the array correct or not. I've tried to declare the CStringArray variable using the variable wizard. This allows me to access the elements but I'm unable to pass the array to GetKeyNames. Sort of new with C++ MFC. Any help would be great. This is the code so far. What I'm tring to do is get a list of the Keys in a section and display them in a Edit Control. Tried to get an anwser from the site forum but no response. Any help would be great.

void CRunProgramDlg::OnBnClickedOk()<br />
{<br />
//// TODO: Add your control notification handler code here<br />
<br />
<br />
<br />
<br />
<br />
LPTSTR Current = NULL;<br />
DWORD dwBuffer = 100;<br />
CString ArrayString;<br />
<br />
//CStringArray Declared with the variable wizard and using <br />
//Using SetSize to set the size of the array<br />
m_FindKey.SetSize(32,0);<br />
<br />
//CStringArray declared in the function set array to 1<br />
CStringArray ProfileSearch[1];<br />
<br />
CIni ini;<br />
ini.SetPathName("C:\\amrtemp\\file2.ini");<br />
ini.GetKeyNames("Routing Indicator",Current,dwBuffer);<br />
<br />
//When using this CStringArray in GetKeyNames recieve error<br />
// error C2664: 'void CIni::GetKeyNames(LPCTSTR,CStringArray *) <br />
// const' : cannot convert parameter 2 from 'CStringArray' to 'CStringArray *<br />
ini.GetKeyNames("Routing Indicator",m_FindKey);<br />
<br />
//When using this CStringArray in ProfileSearch I don't recieve an error here<br />
ini.GetKeyNames("Routing Indicator",ProfileSearch);<br />
<br />
<br />
<br />
<br />
<br />
//Don't know if this works. Wont'compile after ini.GetKeyNames <br />
//("RoutingIndicator",m_FindKey);<br />
ArrayString = m_FindKey.GetAt(1);<br />
<br />
//Recieve error C2679: binary '=' : no operator found which takes a right-hand<br />
//operand of type 'CStringArray' (or there is no acceptable conversion)<br />
ArrayString = ProfileSearch[1];<br />
<br />
m_strBrowse = ini.GetString("Routing Indicator", ArrayString,"Dev");<br />
<br />
<br />
<br />
UpdateData(FALSE);<br />

I'm at a loss I don't think I'm declaring the variables correctly.

Re: Having trouble with arrays.

PJ Arends29-Aug-04 9:34

PJ Arends

29-Aug-04 9:34

nigma_x wrote:
Tried to get an anwser from the site forum but no response.

Patience young grasshopper.

You posted on friday afternoon. The author is probably away for the weekend.

nigma_x wrote:
//CStringArray declared in the function set array to 1
CStringArray ProfileSearch[1];

//When using this CStringArray in ProfileSearch I don't recieve an error here
ini.GetKeyNames("Routing Indicator",ProfileSearch);

ProfileSearch is a pointer to an array of one CStringArray objects.

nigma_x wrote:
//When using this CStringArray in GetKeyNames recieve error
// error C2664: 'void CIni::GetKeyNames(LPCTSTR,CStringArray *)
// const' : cannot convert parameter 2 from 'CStringArray' to 'CStringArray *
ini.GetKeyNames("Routing Indicator",m_FindKey);

You need to pass a pointer. try

ini.GetKeyNames("Routing Indicator", <font color=#ff0000>&</font>m_FindKey);

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Re: Having trouble with arrays.

nigma_x30-Aug-04 3:54

nigma_x

30-Aug-04 3:54

Thank you for the help.

Registry question

Andre Massada29-Aug-04 8:35

Andre Massada

29-Aug-04 8:35

Can anyone give me some tips about saving some variables in registry and retrieve them afterwards ?

Re: Registry question

PJ Arends29-Aug-04 8:53

PJ Arends

29-Aug-04 8:53

http://www.codeproject.com/system/#Registry[^]

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Re: Registry question

Andre Massada29-Aug-04 9:53

Andre Massada

29-Aug-04 9:53

Thanks a milion

setting font size in wm_paint

Tyrus18229-Aug-04 8:30

Tyrus182

29-Aug-04 8:30

hi i am trying to draw a number in a rectangle however the rectagle is fairly small and i want the text to fit how do i shrink the font size so its not larger than the rectangle?

dc.Draw3dRect(rc, yellow, yellow);
dc.SetTextColor(black);
dc.DrawText(str, rc, DT_SINGLELINE|DT_LEFT);

Re: setting font size in wm_paint

bneacetp29-Aug-04 9:02

bneacetp

29-Aug-04 9:02

You need to create Font instance in your class's header file and then create the font using its CreateFont(...) function. Then in your wm_paint event handler, you type something along the lines of:

dc.SelectObject(&m_font); // Selects the font you created.

Good luck on your projects. Big Grin | :-D

Happy Programming and may God Bless!

"Your coding practices might be buggy, but your code is always right."

Internet::WWW::CodeProject::bneacetp
N-Tech Productions
http://www.n-tp.com/

Re: setting font size in wm_paint

PJ Arends29-Aug-04 9:03

PJ Arends

29-Aug-04 9:03

You have to create a new font and select into the device context before calling Drawtext. CreatePointFont is the easiest (although limited) way to create the font.

dc.Draw3dRect(rc, yellow, yellow);
dc.SetTextColor(black);
 
int points = rc.Height() * 10;
CFont newFont;
newFont.CreatePointFont(points, "Arial", &dc);
CFont *defFont = dc.SelectObject(&newFont);
 
dc.DrawText(str, rc, DT_SINGLELINE | DT_LEFT);
 
dc.SelectObject(defFont); // Restore the font in the dc

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Multiple inheritance in MFC

Vaclav29-Aug-04 8:21

Vaclav

29-Aug-04 8:21

I am attempting to add processes into view class in document / view setup by creating multiple inheritance into the view class. ( I need to process each view from common menu.) I followed the sample in MSDN "TN016: Using C++ Multiple Inheritance with MFC" but it will not compile.
I am getting "... : error C2660: 'new' : function does not take 3 parameters" at IMPLEMENT_DYNCREATE(CCCImageView, CScrollView).

The difference between MSDN sample and mine code is the macro IMPLEMENT_DYNACREATE used in the "primary" base class.

MSDN uses IMPLEMENT_DYNAMIC.
My next step is to see how these macros differ.I have not done that yet.

Any suggestion how to debug this?
How can I step thru the macro?
Appreciate any help.
Vaclav

Re: Multiple inheritance in MFC

PJ Arends29-Aug-04 9:52

PJ Arends

29-Aug-04 9:52

Sounds like the difference between new and DEBUG_NEW. The debug version of new takes three parameters. I am sure it has to do with the standard code:

#ifdef _DEBUG
#define new DEBUG_NEW
etc

that is placed at the top of every cpp file.

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Re: Multiple inheritance in MFC

Vaclav30-Aug-04 7:07

Vaclav

30-Aug-04 7:07

Thanks, you are correct.
I guess the real question is why did it showed up when I added multiple inheritance to the class. Time to check the macro itself.
Vaclav

Re: Multiple inheritance in MFC

PJ Arends30-Aug-04 17:58

PJ Arends

30-Aug-04 17:58

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_mfc_cobject.3a3a.operator_new.asp[^]

I have now read TN016. It states you have to overload the operator new and operator delete to remove amibiguities. Seems to me you also have to overload the third (three parameter) version of new.

Good luck;)

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Re: Multiple inheritance in MFC

Vaclav31-Aug-04 9:57

Vaclav

31-Aug-04 9:57

Yes, it does say that, but only if the additional class has same base class.
I am just adding my own abstract class to add new precedures to the view class. I am actually trying to find an easy way to determine an active view so I can modify it. So far I found several ways to do that, but all of them require the actuall view class (cast) to work properly. The "normal" MFC code always returns CView class pointer which is pretty useless in my case.

It seem this note writer missed some important "details".

Thanks for you help.
Vaclav

Struct for CListCtrl items/subitems

Thomas Latuske29-Aug-04 8:03

Thomas Latuske

29-Aug-04 8:03

Hi,

I have a CListCtrl derived class. My question is how do I append a structure, with properties like textcolor, font..., to the items/subitems of this control? Should I use a CMap? If I should then tell me please how I should initialize the structure and the CMap a how do I map the struct to the items?

TIA!!!

best regards
Thomas

Re: Struct for CListCtrl items/subitems

toxcct29-Aug-04 9:24

toxcct

29-Aug-04 9:24

search for some articles here in CP... there are many good ones ; i'm sure you can fine what you need.

cheers,

TOXCCT >>> GEII power

Re: Struct for CListCtrl items/subitems

KaЯl29-Aug-04 22:53

KaЯl

29-Aug-04 22:53

If you want to customize the look of your ListCtrl items, you should have a look to this article: Neat Stuff to do in List Controls Using Custom Draw[^]

And if this article doesn't fit your need, have a look to the
List Control articles[^], you should find what you want there.

HTH,

K.

Собой остаться дольше...

Re: Struct for CListCtrl items/subitems

David Crow30-Aug-04 4:44

David Crow

30-Aug-04 4:44

After calling InsertItem(), you'll then need to call SetItemData().

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

Ellipsis / variable parameters

0v3rloader29-Aug-04 6:46

0v3rloader

29-Aug-04 6:46

Hello,

I am implementing a function which accepts a number of variable parameters and it has the following form:
char *FormatString(char *pszFrm, ...)

This function performs some (limited) processing which, when concluded, should branch execution to a different function. And this is where the problem lies.

How do I pass this variable number of parameters, as it is (meaning unchanged), to a different function?

Any insights will be greatly appreciated.

Thank you

Re: Ellipsis / variable parameters

PJ Arends29-Aug-04 8:46

PJ Arends

29-Aug-04 8:46

You can pass the va_list you generate to any function that takes it.

char *FormatString(char *pszFrm, ...)
{
  va_list arguments;
  va_start(arguments, pszFrm);
 
  // Call function, passing 'arguments' as one of the variables
 
  va_end(arguments);
 
  return pointer_you_got_somehow;
}

Going by your function name, you are probably wanting to pass the parameters onto sprintf(). You can pass the va_list onto _vsnprintf which does the same thing as sprintf.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclang98/html/_pluslang_functions_with_variable_argument_lists.asp[^]

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Re: Ellipsis / variable parameters

0v3rloader29-Aug-04 9:48

0v3rloader

29-Aug-04 9:48

I've been poking aroung MFC source files and managed to find a reference in ::AfxTrace to the _vsnprintf function...

But thanks a lot anyway!

Cheers,

David Nimrod

Sequentially sorting

Daniel132429-Aug-04 5:46

Daniel1324

29-Aug-04 5:46

I have a CStringArray filled with a bunch of filenames. The filenames are like this... 1.jpg, 2.jpg, 3.jpg, and so on.

I have over a thousand of these. From time to time and for some reason I need to go through and rename all of them. I use CFileFind with FindFile() and FindNextFile()to fill the string array with the filenames. But, they're sorted alphabetically, 1.jpg, 10.jpg, 100.jpg, 2.jpg, 20.jpg, etc.

I need these to be sorted sequentially.

I cant seem to figure out how to do it. All I need is to sort the filenames in the string array sequentially.

Any help?

Thanks,
Daniel

Re: Sequentially sorting

Maximilien29-Aug-04 6:09

Maximilien

29-Aug-04 6:09

string sorting is different than numerical sorting.

if your filenames are only <number>.jpg then, convert the number from string to number and sort according to the numbers.

<hr><a href="http://www.thesorus.qc.ca">Maximilien Lincourt</a>
<b>Your Head A Splode</b> - <i>Strong Bad</i>

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