C / C++ / MFC Discussion Boards

Max++12-Nov-09 2:39

12-Nov-09 2:39

My project is about data acquisition through USB port and show the data on PC monitor in graph.So I want to implement the queue to keep the data from USB port before send it to show on graph or save it to file.

Does MFC has the class for create or managing the queue?

Re: Queue Class

Cedric Moonen12-Nov-09 2:45

Cedric Moonen

12-Nov-09 2:45

I don't really like the MFC container classes (but that's just my opinion), but you could check the std::queue (from the STL).

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++

Font size of ComboBox text

m_mun12-Nov-09 2:31

m_mun

12-Nov-09 2:31

Hi all,

I have a combo box. I have created it by declaring CComboBox m_comboBox; at MainFrame class and

if(!m_comboBox.Create(CBS_DROPDOWN | CBS_SORT | WS_VISIBLE |
WS_TABSTOP | WS_VSCROLL, rect, &m_wndToolBar, ID_COMBO))
{
TRACE(_T("Failed to create combo-box\n"));
return FALSE;
}

But the text size very small. How can i increase the size of this text.

Thanks

Re: Font size of ComboBox text

David Crow12-Nov-09 5:12

David Crow

12-Nov-09 5:12

Shaheen.India wrote:
How can i increase the size of this text.

Have you tried using the combobox's SetFont() method?

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I need a programm in C Hexadecimal to decimal

hapyharra12-Nov-09 1:26

hapyharra

12-Nov-09 1:26

hello
i need a programme In C how to convert Hexadecimal to decimal and end of programme with @ plz help me

Re: I need a programm in C Hexadecimal to decimal

Rajesh R Subramanian12-Nov-09 1:29

Rajesh R Subramanian

12-Nov-09 1:29

Hexadecimal and decimal are just different ways of representing the same number, so what's the conversion you're looking for?! Unsure | :~

“Follow your bliss.” – Joseph Campbell

Re: I need a programm in C Hexadecimal to decimal

mav@octaval12-Nov-09 1:48

mav@octaval

12-Nov-09 1:48

learn about scanf and printf

--

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Re: I need a programm in C Hexadecimal to decimal

CPallini12-Nov-09 2:27

CPallini

12-Nov-09 2:27

Do you need to convert an hexadecimal representation of a number (i.e. a string, like "5f") to an int value? If the answer is yes then you may try strtol [^], for instance:

int i = strtol("5f", NULL, 16);

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.

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-- Iain Clarke

[My articles]

Bitmap::FromResource(HINSTANCE, WCHAR) , problem

kk_Kevin12-Nov-09 1:14

kk_Kevin

12-Nov-09 1:14

I use the code "Bitmap::FromResource(HINSTANCE, WCHAR)" to load the bmp pic form res and then to fill a rectangle.but can not get a bitmap.

My project is mfc project. so my first question is how to get hte handle of the HINSTANTCE and the second is the wchar parameter, I use "MAKEINTRESOURCE(pResId)" to get he pic name, but get a blank.
and why? whether the gdi+ need more configuration or any other reason.

below is my the whole code

hInstResource  = AfxFindResourceHandle(MAKEINTRESOURCE(pResId), RT_BITMAP);

CString src = MAKEINTRESOURCE(pResId); 
 
int strLen = 0;

strLen =src.GetLength();

WCHAR* ch = new WCHAR[strLen];

wcscpy(ch, CT2CW(src));

Bitmap* pBitmap = Bitmap::FromResource(hInstResource, ch);

if(!FindResource(hInstResource, src, RT_BITMAP))
{
AfxMessageBox("Fail load pic!", MB_OK, 0);
}

graphics.DrawImage(pBitmap,  75,35);

TextureBrush* pTextureBrush = new TextureBrush(pBitmap, WrapModeTileFlipY);

graphics.FillRectangle(pTextureBrush, 50,300,200,80);

Color m_penColor(233,100,54);

Pen pen1(m_penColor, 1);

graphics.DrawRectangle(&pen1, 50,300,200,80);

Re: Bitmap::FromResource(HINSTANCE, WCHAR) , problem

kk_Kevin12-Nov-09 1:33

kk_Kevin

12-Nov-09 1:33

I have already resolved it

first: hinstance = AfxGetInstanceHandle();

second: FromResource(hInstResource, (LPCWSTR)MAKEINTRESOURCE(pResId));

Re: Bitmap::FromResource(HINSTANCE, WCHAR) , problem

Hadi Dayvary12-Jan-21 5:21

Hadi Dayvary

12-Jan-21 5:21

how did you do that?
please help

www.logicsims.ir

CFileDialog and Vista + Win7 problem!

Arrin12-Nov-09 1:01

Arrin

12-Nov-09 1:01

Hello community,
i make my own CFileDialogEx derived from CFileDialog, with some new controls on it, but if i run my program on
vista or win7, this new controls are not visible, mean, it is the standard Vista File dialog showed,
but not my own!
How to solve this, so that my CFileDialogEx is showed??
The constructor of my file dialog is called, but newer this OnInitDialog() of my custom file dialog!! Frown | :(

In the MSDN says that there is a new parameter BOOL bVistaStyle and i set them to FALSE, but i see again the vista standard CFileDialog, not my own!! Frown | :(

Does any one have a idea how to solve this, so i can use my custom CFileDialogEx(derived from CFileDialog)!?
I hope its understandably what i have wrote Frown | :(

In XP is all there, my complete CFileDialogEx!

thanks for any help!
Arrin

Re: CFileDialog and Vista + Win7 problem!

Maximilien12-Nov-09 2:50

Maximilien

12-Nov-09 2:50

I've used CFileDialog with extra UI (extra dialog) attached to it, and had to use the new bVistaStyle flag to make it work on Vista; the constructor gets called, as well as the OnInitDialog.

class MyFileDialog: public CFileDialog
{
//...
	DECLARE_DYNAMIC(MyFileDialog)
//...
};

MyFileDialog::MyFileDialog(LPCTSTR lpszFilter , LPCTSTR lpszDefExt, LPCTSTR lpszFileName, CWnd* pParentWnd) :
		CFileDialog(TRUE, lpszDefExt, lpszFileName, 	
			OFN_ALLOWMULTISELECT | OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT | OFN_SHOWHELP | OFN_EXPLORER | OFN_ENABLETEMPLATE , lpszFilter, pParentWnd, 0, <code>FALSE</code>)
{
//...
	//add custom controls in CFileDialog
	SetTemplate(0,IDD_MYCUSTOM_DIALOG);
//...
}

I don't think we do any other initializations for the application.

Can you try it with a simple barebone project ?
good luck.
Max.

This signature was proudly tested on animals.

Re: CFileDialog and Vista + Win7 problem!

Arrin12-Nov-09 3:58

Arrin

12-Nov-09 3:58

Hi,
thanx for answer, and i have a own dialog with controls that i show bottom of this standard CFileDialog controls, bottom of combobox of file types.

And the constructor gets called too, but not the OnInitDialog() of my custom dialog(its a modeless dialog as parent), i work on XP system!

I try with SetTemplate()!

regards

Arrin

Re: CFileDialog and Vista + Win7 problem!

Arrin12-Nov-09 21:17

Arrin

12-Nov-09 21:17

Hi,
SetTemplate() dont works Frown | :(

any other idea??
regards
Arrin

CScrollBar() in View

Anu_Bala12-Nov-09 0:07

Anu_Bala

12-Nov-09 0:07

Hi,
I want to display one scrollbar in my view class.
So i created the scrollbar in OnCreate() of view class.
void CTrendView::OnCreate(LPCREATESTRUCT l)
{
CView::OnCreate (l);

HScroll.Create(SBS_HORZ | SBS_TOPALIGN | WS_CHILD | WS_VISIBLE, CRect( 10,10,200,15), this, 1);

}
I declared HScroll in .h file
CScrollBar HScroll;

But the scrollbar doesnot get displayed in my view.

Did i miss anything?

Anu

Re: CScrollBar() in View

Hadi Dayvary12-Nov-09 2:02

Hadi Dayvary

12-Nov-09 2:02

If your view class is drived from CView, replace all CView with CScrollView
then you can use scrollbars easily!

www.logicsims.ir

Re: CScrollBar() in View

Rajesh_Pa11-Jun-10 23:14

Rajesh_Pa

11-Jun-10 23:14

Derive your view class from CScrollView instead of CView, both scrollbar comes automatically, don't forget to set ScrollInfo

ghghhgh

.DrawText makes my app laggy/sluggish (MFC C++)

karhong11-Nov-09 22:10

karhong

11-Nov-09 22:10

Hi,

I've search throughout the net, cant find any solution. Hope someone able to help me.

My apps had a panel which can draw many rect. The app can be moved by draggin left/right using mouse. Whenever i moved the panel, it'll try to move all the rectangle to top/bottom/left/right following the mouse motion. When the mouse move, it will force the rectangle to be redraw. My app become laggy whenever i use .DrawText to a multiple line of text inside the rectangle.

I have around 80++ rect which used .DrawText to display the text on each rect.

I've tested, if the text is only 1 short words without /r/n (one line), then it will display nicely without laggy.
eg:

Alice

But if the text is in multiline (about 4~5 lines) i tried to run .DrawText, it makes my apps lagg.
eg:

Alice
in
wonderland

Any idea ??

The command i used :

dc.DrawText(strDraw, rcText, DT_LEFT | DT_WORD_ELLIPSIS);

Regards,
KH

good

Re: .DrawText makes my app laggy/sluggish (MFC C++)

CPallini11-Nov-09 22:55

CPallini

11-Nov-09 22:55

Cannot believe DrawText makes your system lag. Please post the relevant code.
Smile | :)

Re: .DrawText makes my app laggy/sluggish (MFC C++)

karhong11-Nov-09 23:25

karhong

11-Nov-09 23:25

oh.. it makes the apps lag only.. the system doesnt lag

good

Re: .DrawText makes my app laggy/sluggish (MFC C++)

CPallini11-Nov-09 23:42

CPallini

11-Nov-09 23:42

OK. And what about the 'relevant code'?
Smile | :)

Re: .DrawText makes my app laggy/sluggish (MFC C++)

KarstenK12-Nov-09 1:47

KarstenK

12-Nov-09 1:47

such drawing problems can be solved via drawing in a memory bitmap and only blitting it to screen.

That articles is a great example HOW TO do it:

Link: CEnBitmap

Press F1 for help or google it.
Greetings from Germany

deploying mfc exe

hellogany11-Nov-09 22:09

hellogany

11-Nov-09 22:09

Hi

i have developed an application in vc++ vs2005 .The output runs as an exe.can anyone suggest me an idea on how to do it as a setup file.

regards
gany

Re: deploying mfc exe

002comp11-Nov-09 22:17

002comp

11-Nov-09 22:17

http://msdn.microsoft.com/en-us/library/ms235317(VS.80).aspx

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.