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Thanks for the reply, this is really useful. The only problem with using SetWindowsHookEx - wouldn't that have to go in a separate DLL seeing as I am trying to get the messages that are being passed to a different application?
Many thanks,
KB
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Kayembi wrote:
The only problem with using SetWindowsHookEx - wouldn't that have to go in a separate DLL seeing as I am trying to get the messages that are being passed to a different application?
Yes.
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"
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Correct, I'm not sure as to why this is *necessary* particularly if your not sharing any data, but the CALLBACK will need to be in the dll, perhaps you could have an initialise function that sets up the hook in the dll?
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Dangleberry wrote:
I'm not sure as to why this is *necessary* particularly if your not sharing any data
The hook function is called in the context of the process that causes the callback, not the one that installs the hook. This means that the function must be loaded into the other process' address space. The only way this can happen is if it's in a DLL - an EXE cannot be loaded into another process' address space.
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"
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Gotcha Ryan, it makes a lot more sense now, thanks for that.
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Thanks. Is there another way of doing this that is not so intensive as keep checking GetForegroundWindow()? Or do I definitely have to take the Windows hook DLL route?
Many thanks,
KB
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Kayembi wrote:
Is there another way of doing this that is not so intensive as keep checking GetForegroundWindow()? Or do I definitely have to take the Windows hook DLL route?
A hook would probably be the best way to do it. You could do what you are doing - just don't do it constantly - wait for 10ms or so between checks. But I would recommend using a hook.
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"
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Hi !
I have an enumerated type with for instance 8 enumerations.
I would like to do a for() loop to go through each of the enumerations.
Is there a way to do it easily in C++, or do I have to use a for(int i=... ;... ;...) and cast the int into the enumerated type ?
Thanks !
Jerome
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Jerome Conus wrote:
I would like to do a for() loop to go through each of the enumerations.
Unfortunately, a for loop like
enum day {Sun, Mon, Tue, Wed, Thu, Fri, Sat};
for ( day d = Sun; d <= Sat; d++)
...
will not work as you can't add 1 to d. Have you looked at Neville's suggestion.
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I'm currently working on a videosurveillance software.
I have to display, as fast as possible, sequences of bitmaps, with
streching possibility.
I'm using VisualC++ 6.0, and I'm looking for someone who tried
different ways to display such images :
- drawdibdraw family functions
- strechdibits functions
- opengl texture mapping
- directx
- ... others ?
My goal is to find the FASTEST way to do it, whatever method.
Thanks
Mickey
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Anyone knows how to work with 24bit pictures?
For negative it's not a problem, I just subtract every RGB value from 0xFF and it will be fine. But let's say we want to do a gray calculation like so: (3*red + 4*green + 2*blue)/9 for each RGB pixel. Since I have to use 8bytes in calculations, I get in 2pixels and 2 extra bytes which will just be there.
mm0: RR GG BB RR GG BB RR GG
and the next sequance will be:
mm0: BB RR GG BB RR GG BB RR
You see my problem?
How can I still use MMX to do this in 24bit pics?
thanks
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Hi I am using a drag and drop to install a license file. How can I take the dropped file and save it to the install directory of the software?
I used an environmental variable to get the directory path where the file needs to be saved eg:
char *ptr;
ptr = getenv("LM_LICENSE_FILE");
I can do it using dialogs, but I need an alternative way, please help urgently!!! 
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Hi, how to do it properly?
I tried following:
TCHAR tch[20];
CString str;
.....
str = tch;
but Have an error, do not what kind of, know that because of the assignment.
Thanx.
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Exceter wrote:
TCHAR tch[20];
CString str;
str = tch;
I just tried the code you posted and it works just fine...
The error must be something other in your code. Can you perhaps post the compiler/linker output?
-Dominik
_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do?? 
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Yes, it worked fine for me too, at least for last 2 months.
but yesterday it stopped working. I checked that in DEBUG.
 Unbelievable, now it is working, I changed nothing in the code, NOTHING,
it works
What is going on!!!
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Exceter wrote:
I changed nothing in the code, NOTHING,
Ha,Ha.
I've had my share of random compiler errors in my early programming years as well.
But as I later find out, 9/10 times it was my fault, or there was an explanation (however obscure it may be).
"..Even my comments have bugs!"
Inspired by Toni78
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But 1/10 errors of your code was because of the compiler.
but as I said, my program was working, and I got that error.
and later, it started working again. I do not think that was my fault.
thatnx.
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But 1/10 errors of your code was because of the compiler.
but as I said, my program was working, and I got that error.
and later, it started working again. I do not think that was my fault.
thanx.
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Hello, what is the correct way to enumerate MCI devices?
I've found the following ways:
1) In System.ini, the [mci] key
2) In registry the HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\MediaResources\mci key
3) I'm not sure, but can one use the wDeviceID like an index?
Which is the correct way? Or even another way to do it? Do you know a sample?
-Dominik
_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??
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Hi!
I have two ATL objects, A and B. object A can be create from a method of object B. the user of this COM, should not directly create A in its code, but get one from object B.
I don't know how to stop the user from creating A directly.
Any idea?
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1. Don't supply a coclass for A in the IDL
2. Remove A from your object map in the main CPP file for the project
However, you will need to make sure that the interfaces that object A provides are declared in the library block of your IDL file, or it won't 'publish' the interfaces in the TLB/DLL.
Steve S
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Hi,
I have a SDI application and dont want to show it on the task bar. What is the best way in doing this?
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Set the WS_EX_TOOLWINDOW style bit.
"Blessed are the peacemakers, for they shall be called sons of God." - Jesus
"You must be the change you wish to see in the world." - Mahatma Gandhi
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Where in the code do I add the WS_EX_TOOLWINDOW bit?
And will this always prevent the application appearing on task bar?
Thanks
Neil
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