C / C++ / MFC Discussion Boards

David Crow18-Jul-03 9:29

18-Jul-03 9:29

Something's not right in the hen house. Per the documentation, "...because CreateProcess() returns without waiting for the new process to finish its initialization."

Re: CreateProcess error

Lhenno Ferrari19-Jul-03 4:10

Lhenno Ferrari

19-Jul-03 4:10

OOPS... there is something wrong...

CreateProcess() should return immediataly, and if you want to wait for the created process you must use :

WaitForSingleObject(pi.hProcess, WAIT_OBJECT_0)...

?

Setting window size

Shay Harel18-Jul-03 7:10

Shay Harel

18-Jul-03 7:10

A stupid question that I just can't answer...

My class inherit from CFrameWnd, how do I set the window size to be different than the default size when it pops up ?

Shay

Re: Setting window size

John M. Drescher18-Jul-03 8:29

John M. Drescher

18-Jul-03 8:29

Override PreCreateWindow(CREATESTRUCT& cs) and change the values for cy and cx of cs.

John

LInking Statically to MFC

Code4Food18-Jul-03 6:33

Code4Food

18-Jul-03 6:33

OMG I can't believe I forgot the answer to this question. A long layoff (in the land of VB) and coming back I can't remember. When you statically link MFC do you have to include in your distributable the mfc70.dll? Or, does the user even need it? I know dynamically linking they would need it but can't remember about statically linking.

TIA for such a dumb question.

Code4Food
----
"There is no try; only do or do not"
-Yoda

Re: LInking Statically to MFC

Rick York18-Jul-03 6:42

Rick York

18-Jul-03 6:42

No - static linking means everything needed from MFC is linked into the app statically. No MFC DLL is needed.

The Ten Commandments For C Programmers

How Base64 convert

Anonymous18-Jul-03 5:19

Anonymous

18-Jul-03 5:19

Hi ,
How Base64 convert "A"(i mean to say single charater) , Or How Base64 convert "image" when send with attachment. I want to know how is it encode the character and decode when receive the character.

plz give me in detail.

Thanks

Re: How Base64 convert

markkuk18-Jul-03 5:28

markkuk

18-Jul-03 5:28

See RFC 3548.

Re: How Base64 convert

Anthony_Yio20-Jul-03 17:24

Anthony_Yio

20-Jul-03 17:24

Check out Bob Withers download section.

http://www.ruffboy.com/download.htm

Binary STRINGTABLE Resource Format

Blake Miller18-Jul-03 5:14

Blake Miller

18-Jul-03 5:14

I am creating a 'ResDiff' tool to determine if two modules have similar or different resources.

I can already load all resource blocks as binary blocks of data and detect if they are the same or not, but I am having trouble decoding the STRINGABLE block, which can contain up to 16 resource string entries each.

It seems MSDN is all over what the RC file format is, but is very unclear about what the binary format is once it is compiled into an EXE file.

Does anyone have a link they can point me to with an explanation or some sample code?

Thanks.

C++/MFC/InstallShield since 1993

Re: Binary STRINGTABLE Resource Format

David Crow18-Jul-03 5:44

David Crow

18-Jul-03 5:44

Check out Matt Pietrek's MSDN article "Peering Inside the PE: A Tour of the Win32 Portable Executable File Format", specifically the "PE File Resources" section.

Problems with WM_VSCROLL PostMessage

Greg Ellis18-Jul-03 4:47

Greg Ellis

18-Jul-03 4:47

Hi everyone,

I am trying to scroll a window by more than one unit at a time. currently I am doing this

[CODE]
for(int i=0; i<100; i++)
pParent->m_SkinList.PostMessage(WM_VSCROLL, MAKELONG(SB_LINEDOWN,0),NULL);
[/CODE]

I have my current code inside a for loop to make it scroll down multiple times and it works, but it freezes up my app until the for loop is done.

How can I scroll by multiple lines using a single PostMessage call? Can I scroll variably in a single call without using a for loop?

Thanks,
Greg

Re: Problems with WM_VSCROLL PostMessage

PJ Arends18-Jul-03 11:47

PJ Arends

18-Jul-03 11:47

The HIWORD of the wParam parameter is the position to scroll to

pParent->m_SkinList.PostMessage(WM_VSCROLL, MAKELONG(SB_LINEDOWN,nPos),NULL);

Sonork 100.11743 Chicken Little

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

Within you lies the power for good - Use it!

Re: Problems with WM_VSCROLL PostMessage

Ilushka20-Jul-03 21:43

Ilushka

20-Jul-03 21:43

Do exactly as you`ve been told, and mind that the SB_PAGEDOWN could be used too.

Sincerely yours, Ilya Kalujny.

A SetFont problem

Vincent Ye18-Jul-03 4:21

Vincent Ye

18-Jul-03 4:21

Hi all,

I have a question about SetFont.

Now I create a class that is derived from CWnd, and use SetFont to set a
font to it. Then I override the Paint function to display the content I
want. The problem happens there, no matter what font I set, when I draw the
text in Paint, it display with the same font, I think it is the system font.

How can I make the SetFont work?

Thanks in advance

Re: A SetFont problem

C^hris L^osinger18-Jul-03 4:37

C^hris L^osinger

18-Jul-03 4:37

if you are using DrawText or TextOut, you have to use CreateFont/SelectObject . SetFont doesn't do what you think it does.

something like this:

CFont fnt;
fnt.CreateFont(...);
 
CFont *pOldFont = dc.SelectObject(&fnt);
 
dc.TextOut(...);
or
dc.DrawText(...);
 
dc.SelectObject(pOldFont);

-c

CheeseWeasle

Re: A SetFont problem

Vincent Ye18-Jul-03 4:57

Vincent Ye

18-Jul-03 4:57

Thank you for your reply.

After reading your comment, I have another question. I have used SetFont to set a font to it. How can I know which font I have set when I want to use it in Paint function. Because my class is used by other people, I have to use a generic way to know which font they set. Actually I have tried another way, I override the SetFont function in my class, and remember the font they said. It worked. But because the SetFont is not a virtual one, when they use a CWnd pointer to call the SetFont function, my SetFont will not be called.

Thanks again.

Re: A SetFont problem

C^hris L^osinger18-Jul-03 5:40

C^hris L^osinger

18-Jul-03 5:40

vincentye wrote:
How can I know which font I have set when I want to use it in Paint function

have you tried GetFont() ?

-c

CheeseWeasle

Re: A SetFont problem

Vincent Ye18-Jul-03 5:53

Vincent Ye

18-Jul-03 5:53

Sure I did.

Some of my code is below:

void CColItem::OnPaint()
{
CPaintDC dc(this); // device context for painting

// TODO: Add your message handler code here
CRect rect;
GetClientRect(rect);

CFont *OldFont = NULL;
OldFont = dc.SelectObject(GetFont());

..............
dc.TextOut(xText, yText, strWindowText);
..............

dc.SelectObject(OldFont);
}

Thanks again

Re: A SetFont problem

Joel Lucsy18-Jul-03 7:27

Joel Lucsy

18-Jul-03 7:27

The painting code is right. It sounds more like that the code you're using to test it is somehow not passing the right font. Or perhaps you're creating a font that's local (allocated on the stack) and it's going out of scope. SetFont takes a pointer. If that pointer becomes invalid, I'd suspect that the dc.SelectObject( GetFont() ); would fail.
If you're unsure, post the code that calls SetFont and I'll take a look.

Joel Lucsy

Re: A SetFont problem

Vincent Ye18-Jul-03 7:33

Vincent Ye

18-Jul-03 7:33

Thank you for your information. However it is not that case.

Below is the answer from MS newsgroup:

"
There is no default implementation of WM_SETFONT and WM_GETFONT. You
need to implement these message handlers to store and return the current
HFONT (or NULL as the case may be), and Invalidate if LPARAM is TRUE.
IIRC, ClassWizard won't help with these, so you'll need to add them
manually using ON_MESSAGE macros in your message-map, and remember that
the prototype is 'LRESULT memberFxn(WPARAM, LPARAM)'. In your WM_PAINT
handler, you will need to SelectObject the currently stored HFONT (if
there is one) into your CPaintDC, and SelectObject it back out again
when you're done.
--
Jeff Partch [VC++ MVP]
"

I follow his instruction. It works well.

Anyway, thanks again.

Re: A SetFont problem

Ryan Binns18-Jul-03 19:23

Ryan Binns

18-Jul-03 19:23

When you call SetFont(), are you doing something like this?

CFont font;
font.CreateFont(...);
SetFont(&font);

If you do this, the font will be destroyed as soon as the CFont object goes out of scope, so the default system font will be returned by GetFont(). Make sure you either detach the font (CFont::Detach()) or use a font object that is a class member.

Hope this helps,

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Help: How to set background bitmap for Rebar?

bin892218-Jul-03 4:04

bin8922

18-Jul-03 4:04

I am trying to set a bitmap as background for the CRebar control. But it seems it can only display the image as original size. How can I scale the picture according to the size of the rebar. I want the whole bitmap as background.

string to long part 2

si_6918-Jul-03 3:51

si_69

18-Jul-03 3:51

hi all

thakns for your help so far

at the moment im using the following to convert a string to long

CString stud_id = "00123"
long l;
l = atol (stud_id);

which works ok, but it removes the leading zeros off
so im left with l = "123"

when i want l to = "00123"

does ne1 have ne ideas how to solve this

thanks

si

Re: string to long part 2

Ian Darling18-Jul-03 4:00

Ian Darling

18-Jul-03 4:00

The long data type doesn't work like that - 00123 and 123 are identical, because they are stored internally as a binary number, instead of the characters that make up the digits. If you go the other way, look at this:

<br />
long l=123;<br />
CString str, str2;<br />
str.Format(_T("%.5d"), l);   // str contains "00123"<br />
str2.Format(_T("%d"), l);    // str2 contains "123"<br />

Note that if you write:

<br />
long l=0123;  // or 00123 for that matter<br />

Then a C/C++ compiler will treat the literal value as base-8 (octal) instead of base-10 (denary).

--
Ian Darling

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