C / C++ / MFC Discussion Boards

Re: CreateWindowEx is stupid and nonsensical

Steve S30-Oct-03 4:49

Steve S

30-Oct-03 4:49

Not until after I'd written my reply Frown | :(

I should've reread the whole thread from the root message first!

Steve S

Re: CreateWindowEx is stupid and nonsensical

David Crow30-Oct-03 2:20

David Crow

30-Oct-03 2:20

super_matt wrote:
i am doing everything that they do very similarly and it isn't working

I realize it's only two words, but therein could lie the answer. I've not looked at the referenced Web site, but perhaps it would be worth your time to compile that project to make sure it works, and then retrofit it with some of your code until the problem surfaces.

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Re: CreateWindowEx is stupid and nonsensical

super_matt30-Oct-03 7:50

super_matt

30-Oct-03 7:50

I have taken working procedural code and tried to object orient it, all i really changed was instead of executing global methods i execute class members. i have made sure that works, i have tried procedural code executing those class members, it works. the only thing i really changed was making my WndProc static, and passing (void* this) to it as the LPVOID param, then casting it back. i think my problem is maybe in my WndProc method, but i don't know what it is. I have tried making my WndProc call MessageBox() and create a message box that tells that it was entered, i read that WndProc is called before CreateWindowEx or CreateWindow returns so, those messageboxes should appear, but they aren't so i can only assume that therin lies my problem.

here is my WndProc:

LRESULT CALLBACK GLWindow::WndProc(HWND hWnd,
LPARAM lParam,
WPARAM wParam,
UINT uMsg)
{
// GLWindow is my window class, i am trying to create a wrapper to create openGL windows
GLWindow* pWnd;

if (uMsg == WM_NCCREATE)
{
MessageBox(hWnd,"WM_NCCREATE","WndProc Message",MB_OK | MB_ICONINFORMATION);
assert(((LPCREATESTRUCT(lParam))->lpCreateParams));

SetWindowLong(hWnd, GWL_USERDATA, (long)((LPCREATESTRUCT(lParam))->lpCreateParams));
}
else if (uMsg == WM_CREATE)
{
MessageBox(hWnd,"WM_CREATE","WndProc Message",MB_OK | MB_ICONINFORMATION);
assert(((LPCREATESTRUCT(lParam))->lpCreateParams));
SetWindowLong(hWnd, GWL_USERDATA, (long)((LPCREATESTRUCT(lParam))->CreateParams));
}

pWnd = GetGLWindowPtr(hWnd);

if (pWnd != NULL)
return pWnd->MsgHandler(hWnd, uMsg, wParam, lParam, pWnd);
else
return DefWindowProc(hWnd, uMsg, wParam, lParam);
}

can you see my problem?

-Matt

Help - COM Ports

raheela29-Oct-03 7:12

raheela

29-Oct-03 7:12

hi
Can ne 1 tell me how I can access COM Ports using MFC
I have a semester proj

bye

raheela

Re: Help - COM Ports

David Crow29-Oct-03 7:26

David Crow

29-Oct-03 7:26

Depending on the level of access required, answers may vary.

http://www.codeproject.com/managedcpp/howtocomport.asp
http://www.codeproject.com/system/serial_com.asp
http://www.codeproject.com/system/serial.asp

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Visual C++.net Removing Member Variable

mfcuser29-Oct-03 6:48

mfcuser

29-Oct-03 6:48

I don't know if there is a way to delete a member variable automatically, but I can't figure it out. Like in Visual C++ 6, if you add a member variable, you can go to the class wizard and remove it. Visuall C++ 6 automatically remove that variable from the project automatically.

But I could not find way to delete a member variable in Visuall C++.net. I have to go to the class to manually remove it, then I have to manually delete it from the DDX control as well.

Is there another way to delete member variable in VC++.net as does in Visual C++ 6?

Re: Visual C++.net Removing Member Variable

Peter Molnar29-Oct-03 13:53

Peter Molnar

29-Oct-03 13:53

I am not aware of any such possibilities in .NET but you could simply use the "Find in Files" utility giving your memeber variable as the search word which gives you a list of all accurances of this word.

Bunburry

how to get a list of ALL the truetype fonts

JP GOBLET29-Oct-03 6:43

JP GOBLET

29-Oct-03 6:43

Here is how i get that list : i call GetTrueTypeFonts with chtypeface = "" (see code);
EnumFontFamiliesEx calls the call back functions GetFaceName and GetStyleName.
Problem : if i test with FontData.lfCharSet = ANSI_CHARSET
i don't get fonts such as wingdings, symbols, .... (these fonts contain 'decorative' symbols). If i use DEFAULT_CHARSET, i get those wingdings etc... , but lots of the fonts included with ANSI_CHARSET are now missing.
The documentation says :
"If set to DEFAULT_CHARSET, the function enumerates all fonts in all character sets. If set to a valid character set value, the function enumerates only fonts in the specified character set."
So i thought that i would get all with DEFAULT_CHARSET.

(MapDefPolice is a CMap that collect all the fonts)

void GetTrueTypeFonts(const char *chtypeface, MapDefPolice *pMap)<br />
{<br />
	LOGFONT FontData;<br />
	strcpy(FontData.lfFaceName, chtypeface);<br />
	FontData.lfPitchAndFamily = 0;<br />
	FontData.lfCharSet = ANSI_CHARSET;<br />
	HDC hDC = ::GetDC(NULL);<br />
	EnumFontFamiliesEx(hDC, &FontData, <br />
										chtypeface[0] ? (FONTENUMPROC)GetStyleName : (FONTENUMPROC)GetFaceName, <br />
										(long)pMap, 0);<br />
	::ReleaseDC( NULL, hDC);<br />
}<br />
<br />
// fct CALLBACK appelée par GetTrueTypeFonts<br />
int CALLBACK GetFaceName(ENUMLOGFONTEX *lpelf, NEWTEXTMETRIC *lpntm, DWORD FontType, LPARAM lParam)<br />
{<br />
	if (FontType & TRUETYPE_FONTTYPE)<br />
		GetTrueTypeFonts(lpelf->elfLogFont.lfFaceName, (MapDefPolice *)lParam); // lister les styles pour ce facename<br />
	return 1;<br />
}<br />
<br />
// fct CALLBACK appelée par GetTrueTypeFonts<br />
int CALLBACK GetStyleName(ENUMLOGFONTEX *lpelf, NEWTEXTMETRIC *lpntm, DWORD FontType, LPARAM lParam)<br />
{<br />
	DefPolice *pDefPolice;<br />
	long ID = GetTrueTypeID(lpelf->elfLogFont.lfFaceName, lpntm);<br />
	MapDefPolice *pMapDef = (MapDefPolice *)lParam;<br />
	pDefPolice = new DefPolice;<br />
	pDefPolice->No = ID;<br />
	ZeroMemory(&pDefPolice->Bits, sizeof(FontBits));<br />
	pDefPolice->Bits.state = FONT_STATE_NEW;<br />
	pDefPolice->strDescription = lpelf->elfLogFont.lfFaceName;<br />
	pDefPolice->strDisplayName = lpelf->elfFullName;<br />
	pDefPolice->Bits.weight = lpelf->elfLogFont.lfWeight;<br />
	pDefPolice->Bits.bItalic = lpelf->elfLogFont.lfItalic;<br />
	pDefPolice->Bits.bBold = ((lpntm->ntmFlags & NTM_BOLD) != 0);<br />
	pDefPolice->Bits.bTrueType = 1;<br />
	pMapDef->SetAt(pDefPolice->No, pDefPolice);<br />
	return 1;<br />
}

Re: how to get a list of ALL the truetype fonts

David Crow29-Oct-03 7:21

David Crow

29-Oct-03 7:21

Odd. Are you sure that FontData.lfFaceName is '\0'? Is the value for FontData.lfPitchAndFamily filtering anything out?

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Re: how to get a list of ALL the truetype fonts

JP GOBLET29-Oct-03 21:29

JP GOBLET

29-Oct-03 21:29

Problem solved : the fonts wingdings, symbols, ... are in the SYMBOL_CHARSET charset.
So a first call with FontData.lfCharSet = ANSI_CHARSET will get the standard fonts, and a 2nd call with FontData.lfCharSet = SYMBOL_CHARSET get the rest.

CHtmlView

includeh1029-Oct-03 6:36

includeh10

29-Oct-03 6:36

how to implememt "search text" in CHtmlView?

includeh10

Re: CHtmlView

Peter Molnar29-Oct-03 13:32

Peter Molnar

29-Oct-03 13:32

http://www.codeproject.com/miscctrl/chtmlview_search.asp[^]

Bunburry

CTime causes exceptions

Daniel132429-Oct-03 6:35

Daniel1324

29-Oct-03 6:35

A call to any CTime member function causes unhandled exceptions, access violation. Any ideas why?

Re: CTime causes exceptions

David Crow29-Oct-03 6:40

David Crow

29-Oct-03 6:40

Daniel1324 wrote:
Any ideas why?

Not without a code snippet that exhibits the problem.

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Re: CTime causes exceptions

Daniel132429-Oct-03 6:42

Daniel1324

29-Oct-03 6:42

CTime t;
t.GetYear();

Re: CTime causes exceptions

JohnJ29-Oct-03 7:00

JohnJ

29-Oct-03 7:00

Daniel1324 wrote:
CTime t;
t.GetYear();

What year would that be then? Sigh | :sigh:

t is unitialised and has no valid data so it goes crash bang wallop when you try to use it D'Oh! | :doh:

See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcmfc98/html/_mfc_ctime.3a3a.ctime.asp[^]

John Hudson
Megan Forbes after having cage slightly rattled:
Grrrrrrr.... humbug I say!
JohnJ makes a note to wear protective clothing/goggles next time;P
http://www.rainbow-innov.co.uk[^]

Re: CTime causes exceptions

David Crow29-Oct-03 7:05

David Crow

29-Oct-03 7:05

I'm curious what you expected to come from an uninitialized object? Even though CTime::GetYear() is dereferencing a NULL pointer, it doesn't make sense that you'd assume valid data would be returned.

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Re: CTime causes exceptions

Daniel132429-Oct-03 11:27

Daniel1324

29-Oct-03 11:27

My fault. I was assuming that it would return date and time stored in the system.

Version info?

mcgahanfl29-Oct-03 6:17

mcgahanfl

29-Oct-03 6:17

Is there a way to assign a version number to any type of file?
INI, DOC ... TXT.

thank you

Re: Version info?

Chris Meech29-Oct-03 6:32

Chris Meech

29-Oct-03 6:32

If the file is part of some 'version control' system, then you likely can do what you are after. But the short answer is no, I think.

Chris Meech

It's much easier to get rich telling people what they want to hear. Chistopher Duncan

But for a man, barbecuing eggplant and portobello mushrooms is a sure way to have people question your sexual orientation. Kuro5hin

Re: Version info?

David Crow29-Oct-03 6:38

David Crow

29-Oct-03 6:38

Yes. Within Windows Explorer, right-click the file and select Properties. Click the Summary tab. Enter a version number in the Revision Number box. This number, and the other pieces of information, are stored in the file itself. This is called structured storage.

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Re: Version info?

mcgahanfl29-Oct-03 6:47

mcgahanfl

29-Oct-03 6:47

Very cool - Thank you

how to search post in the forum?

includeh1029-Oct-03 6:13

includeh10

29-Oct-03 6:13

how to search post in the forum?
i.e. i need info about "CRichEdit", but i only get "aticles", not posts.

how to do the search, or where is the search engine?

thanks

includeh10

Re: how to search post in the forum?

Michael P Butler29-Oct-03 6:24

Michael P Butler

29-Oct-03 6:24

http://www.codeproject.com/script/comments/search_comments.asp?forumid=1647[^]

The actual link is on the right handside of each forum under Search Comments

Michael

'Logic, my dear Zoe, merely enables one to be wrong with authority.' - The Doctor: The Wheel in Space

Re: how to search post in the forum?

includeh1029-Oct-03 6:49

includeh10

29-Oct-03 6:49

thx, it is what i'm looking for

Rose | [Rose]

includeh10

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