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Hi,
Im my dialog i use combobox to list all OPC servers.
Each tiem when i click "ListServer" button in my dialog..it displays all registered servers in combo box.
Iam using OPCEnum to get server list,the function is
int NumberOfOPCServers (BOOL UseOPCENUM, LPCSTR MachineName);
In that list there are also unwanted server list which i dont have any work in that is also displayed.
Is there any option to not display this kind of unwanted servers.
-- modified at 1:33 Wednesday 26th July, 2006
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if you dont need to these items why you add these item to your combobox
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Hi,
In my MFC application i registered my server by using one clsid from GUID.exe as follows
SvrName = "EsimServer";
SvrDescr = "Prosimulator OPC Server";
UpdateRegistry ((BYTE *)&Svr_Clsid, SvrName, SvrDescr, HelpPath);
I gave clsid in top of my coding.
My problem is in same application i want to register different servers.
That is EsimServer1,EsimServer2,EsimServer3...
Can i do this by using the same clsid for all server register.
Anu
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you have to use separate CLSID for each com component.
in this way u can register multiple servers
Sudeesh
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Generally we have seen that when put out mouse over any control it displays some description about that after some time How can we implement that in our VC++ environment Kindly guide me regarding this
Thanx in advance
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abhiku28 wrote:
mouse over any control it displays some description
This should help[^]
Somethings seem HARD to do, until we know how to do them.
 _AnShUmAn_
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Hello everyone!
I spent like 10 mins trying to fix a function, but it didn't make sense... The problem was that, I was mixing 2 other funcs into that one, one was bool, the other was int... It had bool type, but it returned int, so that was the problem, 0 = false!
If 0 is the "good" value for int, isn't bool backwards? 
Windows Calculator told me I will die at 28. 
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I'm not sure what it is that you're saying here, but an int can evaluate to bool automatically, 0 is false. How is 0 'the good value for int' ???
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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true = !false;
false = !true;
So, if true = 1, !true = 0. If false = 0, !false = 1. At least this holds true for VC6, not sure about other languages or compilers. (I know in icky VB, True=-1 and False=0).
Not sure what you mean by, 0 is the "good" value for int...
- S
50 cups of coffee and you know it's on!
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Hi,
you didn't mention the functions. Therefore this is just a wild guess.
There are many functions, that return an int to indicate success or failure. Usually a 0 means a success and everything else indicates an error. This is typically done, when throwing an exception is not an option.
Regards,
Tim
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Hmm... In VC++ 2003, it's like Steve said it was like in VB, true = 1, false = 0... Or am I wrong? Maybe returning int on a bool func was the mistake?
Windows Calculator told me I will die at 28.
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Kixdemp wrote: In VC++ 2003, it's like Steve said it was like in VB, true = 1, false = 0... Or am I wrong?
This is correct.
Kixdemp wrote: Maybe returning int on a bool func was the mistake?
From your description, I don't understand what you are doing. Can you provide a short code sample?
Regards,
Tim
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Actually in VB true is -1 and false is 0. (because they used bitwise AND to test for it i think)
BOOL (which is a typedef for int) should be either TRUE (1) or FALSE (0). Why are you returning int if the return type is bool? It has to do unneccesary conversions.
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The return values for APIs can be:
int or long or DWORD: 0 = success (or ERROR_SUCCESS or NO_ERROR, all defined as 0), non-zero = failure.
BOOL (not bool): FALSE (zero) = failure, non-zero = success. Note that with BOOL, any non-zero value should be interpreted as "true", therefore never test a BOOL against TRUE, only against FALSE.
HRESULT: Use the SUCCEEDED and FAILED macros to test for success/failure.
--Mike--
Visual C++ MVP 
LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ
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Kixdemp wrote: If 0 is the "good" value for int, isn't bool backwards?
There's only one reason for success, but there can be several for failure. That's why a function typically returns 0 for success.
"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank
"Judge not by the eye but by the heart." - Native American Proverb
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Hi All,
I need to develop a client program with C++/MFC that let user can dowload the file from my Servlet Server. I mean from C++ program we can send a POST or GET to servlet server to send the data and can download a file.
Any help in this.
Thank in advance!
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See CFtpConnection if it suits your needs.
Somethings seem HARD to do, until we know how to do them.
 _AnShUmAn_
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Hope I understood your question
See URLDownloadToCacheFile and URLDownloadToFile and also you can see a example from Mr Michael Dunn for URLDownloadToFile
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Yah, I think I need use CInternetConnection and maybe URLDownloadToCacheFile and URLDownloadToFile for this application, but I don't know how to use this.
From C++ program I need to connect to a servlet server for request or download file.
Please let me know where example from Mr Michael Dunn is?
Any help again,
Many thank to you!
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I used manifest file to make my UI interface into Xp style. And I want the checkbox and option button transparent. But when I SetBkMode(TRANSPARENT) in CtlColor. There is a black rectangle on the checkbox. How to remove the black rectanble.
My code is under VC .NET.
-- modified at 23:28 Tuesday 25th July, 2006
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SeeHere[^] and Here[^] maybe it is some helpful to you
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Now i am diong a project using vc++
there is need to draw graph using random access values from database.
julie
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