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Pick a single cpp file and declare your global variable in that file like so:
int g_iCount = 0;
Then in the header file that accompanies that cpp file make this declaration:
extern int g_iCount;
The extern tells the compiler that it will find that variable somewhere else in your program when it tries to link all of the modules together. So now all that you have to do is include the header file in any file that wants to use that global variable g_iCount.
Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!
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Two things.
1. the best way to do this is to declare it in stdafx.cpp, and declare it extern in stdafx.h. Then everything can see it
2. doing so is very poor design. If you cannot make it a member of your CWinApp derived class ( assuming you use MFC ), then you should at least wrap it in a namespace so it is globally visible, but not 'global' as such.
Christian
The tragedy of cyberspace - that so much can travel so far, and yet mean so little.
And you don't spend much time with the opposite sex working day and night, unless the pizza delivery person happens to be young, cute, single and female. I can assure you, I've consumed more than a programmer's allotment of pizza, and these conditions have never aligned. - Christopher Duncan - 18/04/2002
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One thing I avoid at all costs is app-level data definitions and/or declarations in stdafx.*. Making any changes means rebuilding the .pch file which often takes longer than the rest of the entire build process and defeats the purpose of having a pre-compiled header file. If I can't or don't want to make a global variable a member of the app class then I make a Globals.h file that gets included where necessary. Sometimes I make a class called CGlobals because it provides a convenient place to initialize and release the variables but this doesn't happen frequently.
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when i make a new icon in the ide it always starts with a 32*32 icon which i dont want ... how can i delete it or only have a 16*16 icon that gets used for the system tray?
grrrrrr
"... and so i said to him ... if it don't dance (or code) and you can't eat it either f**k it or throw it away"
sonork: 100.18128 8028finder.com
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In the icon editor, click Image->New Device Image.
--Mike--
Just released - RightClick-Encrypt - Adds fast & easy file encryption to Explorer
Like the Google toolbar? Then check out UltraBar, with more features & customizable search engines!
My really out-of-date homepage
Sonork - 100.10414 AcidHelm
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heh thanks but i did that
u still have a 32*32 that seems to get used for the system tray
"... and so i said to him ... if it don't dance (or code) and you can't eat it either f**k it or throw it away"
sonork: 100.18128 8028finder.com
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Delete the 32*32 one. "Delete device image"
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When you call LoadImage to load the icon into an HICON, specify the size that you want, 16x16, then you will be able to have both versions stored in one icon.
Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!
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i have started designing an interface that looks like that of 3d studio max, and wondered if anyone thought it was worth the time and effort.
==================================================
When Your Mind Wonders...Where Does It Go???
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Great Ideas Rules the World..!!!!
R_Renjith The True CP ian
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hi
i used the default app icon for my system tray icon and it seems to have been squished down cos bits of it are missing ... am assuming one can provide a separate icon and all but how big should i make it?
16*16 or what?
sorry if this is a dumb question
"... and so i said to him ... if it don't dance (or code) and you can't eat it either f**k it or throw it away"
sonork: 100.18128 8028finder.com
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yes 16x16 in size, and cooincidentally you will need to make it a 16 color bitmap as well. Even if you give the tray a 256 color icon, it will squash it to 16 colors.
Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!
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kilowatt wrote:
Even if you give the tray a 256 color icon, it will squash it to 16 colors.
I thought that starting with win2k the systray can have 256 colors icons. Please correct me as I am not sure. Thanks.
Best regards,
Alexandru Savescu
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Hi, I've wondered if there is some article describing the "Add Remove Programs" program API. I need to list installed programs, and be able to install and uninstall the way this program does.
All help appreciated,
Deian
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Look in HKLM\software\Microsoft\Windows\CurrentVersion\Uninstall
Each key under that one is a product. Ones that have both "DisplayName" and "UninstallString" values are listed in Add/Remove.
--Mike--
Just released - RightClick-Encrypt - Adds fast & easy file encryption to Explorer
Like the Google toolbar? Then check out UltraBar, with more features & customizable search engines!
My really out-of-date homepage
Sonork - 100.10414 AcidHelm
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Thanks Mike, I've found them, but yet, I don't have any idea on how to programatically call Uninstall like I've done it when I press the Uninstall button. Any ideas on doing that?
Thanks,
Deian 
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How do you format a number to have 2 digits, for example 1 would become 01 and 10 would stay 10. There wont be any 3 digit numbers so it doesn't have to round, just add a 0 to 1-digit numbers.
-Raffi
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Use follows:
m_str.Format(_T("%.2d"), number);
or
m_str.Format(_T("%02d"), number);
Best regards,
Eugene Pustovoyt
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I almost had it. I had %2d. Thanks alot
-Raffi
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How does a person get a list of installed tape drives (and the information required for CreateFile()) in a Windows9x environment.
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DWORD GetTapeParameters(
HANDLE hDevice,
DWORD dwOperation,
LPDWORD lpdwSize,
LPVOID lpTapeInformation
);
try the functiion..
R_Renjith The True CP ian
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installed tape drives ... Windows9x
Using Win32 API? You don't.
Mike Don't blame me, I'm just the messenger. Blame Microsoft
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Hi.
Is it possible to change the background color and font color of a CEditView window? Please explain.
Thanks,
Kuphryn
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Use SetTextColor and SetBkColor.
For an example see this article at CodeProject.
-Dominik
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I have read that tutorial. I believe it is for an edit box.
Kuphryn
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