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#define ABC 120
This is fine.
#define HALF_ABC ABC / 2
This will work most of the time, but could come back to bite you. You almost certainly want:
#define HALF_ABC (ABC / 2)
#define QUART_ABC ABC / 4 // this is one-quarter
You have the same problem as before, and could use brackets. The comment is dealt with by the preprocessor, and earlier than macro expansion in my experience, so its as if you hadn't typed it.
Iain.
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Hi all,
I have a small GDI question.
I have created a bunch of child windows that can be moved around. I want to find out when the windows intersect. Is there a simple API that can tell me that or do I have to calculate the window rect and check if it intersects with other windows.
Thanks 
Pankaj
Without struggle, there is no progress
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CRect oR1, oR2, oIntersect;
pWnd1->GetClientRect(&oR1);
pWnd2->GetClientRect(&oR2);
if (oIntersect.IntersectRect(&oR1,&oR2))
{
// they intersect and the overlap
// area is defined in oIntersect
}
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Hi,
How can I do a shift+Tab in PreTranslateMessage()?
In an earlier post, I get an answer to do the Tab:
pMsg->wParam = VK_TAB;
Now I want to force a shift+Tab.
Thanks,
Claude
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With difficulty. The Shift and Tab key presses are sent in different messages. The only way I can think of is to prevent the default processing for this message, and post the following messages:
WM_KEYDOWN for the shift key
WM_KEYDOWN for the tab key
WM_KEYUP for the tab key
WM_KEYUP for the shift key
You may be able to get away without the WM_KEYUP messages, but it's good to be safe just in case.
Ryan
Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2nd April 2003, The Lounge)
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"
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One solution is ::GetKeyState(VK_SHIFT).
Kuphryn
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Hi everybody!
Could anyone tell me how to create a moving text in Win32?
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There is no magic way of creating moving text in Win32...
You have a few choices, depending on what you want to do.
The simplest is to create a timer (::SetTimer, ::KillTimer) and
in the WM_TIMER handler change some XY coordinates according to
some rule. Then redraw your text in the newly changed position.
If you can be more specific about what you want to do, then
we can be more specific in our replies.
Iain.
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hi,
I'm c beginner.
I have a small problem. How can I make buttons which are dynamically created and erased with the same ResourceID.
Programmed as below:
CtlNewControl ((void **)&frmP, 1323, checkboxCtl, "Hello" , 1, 1, 15, 11, 1, 1, true);
But unfortunately it's doesn't work Maby you could help me with tis stuff .
There is no error's, but there are no buttons either nothing happens.
Thanks
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You should try any other sites concerning CodeWarrior, Apple Dev. and Apple programming.
Maximilien Lincourt
For success one must aquire one's self
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Soory, but Codewarrior used c++, so people transferred me here. Would be nice if someone helps.
Thanks.
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but this is not generic C++ (which we could help).
It does not look like PowerPlant GUI programming (codewarrior UI framework).
What is it ? can you tell us more ?
I googled for it, and it sounds like PalmOS programming; maybe look for more info on the palmos site ( http://www.palmos.com/dev/support/forums/ [^] )
Maximilien Lincourt
For success one must aquire one's self
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Hi Everyone
How do you increase the font size of the text in CTreeCtrl?
thanks
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You need to set a new font for the control. Normally I would do it something like this (assuming your control is part of a dialog)
OnInitDialog()
{
LOGFONT lf;
m_TreeCtrl.GetFont()->GetLogFOnt(&lf):
lf.lfHeight += 2;
m_Font.CreateFontIndirect(&lf);
m_TreeCtrl.SetFont(&m_Font);
}
m_Font needs to be part of your dialog class as it needs to live at least as long as the tree control using it. After setting the font, the tree control should work quite happily with it.
Roger Allen
Sonork 100.10016
Were you different as a kid? Did you ever say "Ooohhh, shiny red" even once? - Paul Watson 11-February-2003
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I want to use an example from msdn which tells how to set the proxy settings (Explorer). The problem is that my compiler doesn't know what PROXY_TYPE_PROXY is and many others. Those deifinitions are in the wininet.h but probably I have the older version cause there is nothing about in there. My wuestion is how to download (wininet.h), I do not need (and have no time) to download all sdk.
Maybe you know hot to change proxy setting for DUN ?
Please help.
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Even if someone were to just give you the single .H file, there's no guarantee that it would work without the other files that go along with it. You would also need updated .LIB and .DLL files. Take the time to download the SDK, and burn it to CD. It'll be worth it.
If you are using a modem, go by a local computer store and see if they would be willing to download the file(s) for you, or maybe a friend has a fast connection that you could borrow for a bit. It shouldn't take very long, and will definitely be worth it. I'm using DSL at work and got all files downloaded during my lunch hour.
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I'm looking for a grid control which enable to format the cells (font size, ...) like a rich edit control.
I've tried the Chris Maunder MFC Grid control, but I don't know how to do this with this control.
Does anyone know other grid controls?
Thks in advance!
Appstmd
http://www.appstmd.com
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Having implemented File Dragging / Dropping from Explorer into my application (using the DragQueryFile and DragFinish API), I know need to implement the reverse (drag/drop an item from my application into a directory location in the explorer window).
I assume that for this action my application will then need to receive the path location of the drop target from Explorer and then do what is necessary to create the file.
What technologies of the great and wonderful programming world do I need for this to be implemented.
Details are not necessary, I just need to be pointed in the right direction.cheers.
"..Even my comments have bugs!"
Inspired by Toni78
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Hello
dwCopyLen = dwBufSize - dwSkipCount - HVD_HEADER_SIZE;
how can dwCopyLen become 821 when:
dwBufSize = 815
dwSkipCount = 0
#define HVD_HEADER_SIZE 1+2+4+1 //stx+USHORT+DWORD+char
strange huh?
If i split it to three lines:
dwCopyLen = dwBufSize;
dwCopyLen -= HVD_HEADER_SIZE;
dwCopyLen -= dwSkipCount;
I get the correct result.
Why?
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This comes down to the order in which the operands are evaluated. Your first line expands to
815 - 0 - 1 + 2 + 4 + 1
i.e. 814 + 2 + 4 + 1 = 821
Do
#define HVD_HEADER_SIZE (1 + 2 + 4 + 1)
to get the results you are expecting!
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Martyn Pearson wrote:
This comes down to the order in which the operands are evaluated. Your first line expands to
815 - 0 - 1 + 2 + 4 + 1
i.e. 814 + 2 + 4 + 1 = 821
Do
#define HVD_HEADER_SIZE (1 + 2 + 4 + 1)
to get the results you are expecting!
ofcourse 
Why didnt I think of that? 
Many thanks!
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Lesson 1:
Don't use macros unless you can't do without.
const int HVD_HEADER_SIZE = 1 + sizeof(USHORT) + sizeof(DWORD) + sizeof(char);
would have done the job.
Lesson 2:
If you have to embrace macros, embrace them correctly:
braces go 'round the entire expression, and each argument
"Der Geist des Kriegers ist erwacht / Ich hab die Macht" StS
sighist | Agile Programming | doxygen
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Hi, I keep getting an error and I can't work out how to get rid of it
it is Error HC5011: cannot open the file E:\VC98\MFC....\afxhlp.hm
I think this is because I moved my project to a machine with a different path. How can I change the path the compiler uses?
Cheers
Andy
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This is a file referenced in your projects .hpj (help file). Its a text file, so open it up and mod the path to the correct (new) location.
Roger Allen
Sonork 100.10016
Were you different as a kid? Did you ever say "Ooohhh, shiny red" even once? - Paul Watson 11-February-2003
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