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A struct can be defined in a .h that is included multiple times with no problem. But if you have a variablee of some struct type, use the export keyword. Same with functions.
Michel
It is a lovely language, but it takes a very long time to say anything in it, because we do not say anything in it, unless it is worth taking a very long time to say, and to listen to.
- TreeBeard
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Can any body tell how to get the mouse position from the LPARAM.
lParam has WM_LBUTTONUP message.
LPARAM lParam;
LPEVENTMSG lpEvent= (LPEVENTMSG)lParam;
//lpEvent->paramH;
//lpEvent->paramL;
i think i can get mouse position using lpEvent pointer but i could not successed yet
can any body tell how to get it.
r00d0034@yahoo.com
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<br />
xPos = GET_X_LPARAM(lParam); <br />
yPos = GET_Y_LPARAM(lParam); <br />
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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Hello all. I have searched through all the Tree Controls on code project and I have yet to find what I need. It could be that I am not looking hard enough, or that I am just blind , but your help would be appreciated.
Anyway, I am looking for a tree control that uses check boxes and is smart enough to check all the parent nodes (in that greyed check sort of way) when a child node is checked. I have seen it in just about every application, and I have yet to find anything here.
Thanks in advance.
***********************
Tony Fontenot
Recreational Solutions
tony@recsolutions.com
***********************
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Hello,
I am changing my server to support multithreading. However, I have problem. This is how the server main loop is
<br />
<br />
CSocket clientS;<br />
<br />
while (run)<br />
{<br />
Print_Log("A loop... : mainServer->Start()");<br />
cs.Accept(clientS);<br />
hSThread = CreateThread(NULL, 0, ServiceThread, &clientS, 0, &threadId);<br />
}
<br />
<br />
Here is my thread call back function:
<br />
DWORD WINAPI ServiceThread(LPVOID p)<br />
{<br />
CSocket* clientS = ((CSocket*)p);<br />
int re;<br />
char r[6];<br />
<br />
do<br />
{<br />
re = clientS->Receive(r, 6);<br />
if (re != 0)<br />
cout << r << endl;<br />
} while (re != 0);<br />
clientS->Close();<br />
return 0;<br />
}
<br />
I get a error message when the client send me somehing, which is "Debug Assertion Fail". The server can actually receive the message, but when the thread is going to close. The error message come out. I didn't know where my code have make the mistake. Can anyone help me? Thanks!
Nachi 
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I have a tab control in a single document VC++ document. I have individual dialogs for each tab in the control and the main dialog (CNewStats) also has a Load Stats button. Is there any way to update the data in the dialogs that are inside the tab control after the Load Stats function has been executed? Any help is appreciated.
Brad Jennings
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Nevermind all. I figured it out. Thanks, though, if you took a look at it. Later.
Brad Jennings
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I am developing an app that will, amongst other things, act as an OLE client. My app will currently embed and display an object, such as a Word document, but I want to go one step farther. When the Word object is displayed it only shows the first page... I want to give the user the ability to scroll through all of the pages (without actually editing the object). I tried deriving my view class from CScrollView, but this only gives the ability to scroll the first page of the Word doc up and down...It doesn't show the rest of the pages.
Does anyone know how to scroll the embedded client object (code examples would help alot)?
Gary Kirkham
A working Program is one that has only unobserved bugs
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I have in the VC client a progressbar on the UI.:
BSTR bstrDesc;
try
{
CoInitialize(NULL);
_Class1Ptr ptr;
ptr.CreateInstance(__uuidof(Class1));
m_Progress1.SetStep(1);
m_Progress1.SetRange(0, 10);
long lHwnd=(long)m_Progress1.GetSafeHwnd();
ptr->CheckingStuff(&lHwnd);
}
and the VB dll function is:
For i = 1 To 10
result = SendMessage(PbarHandle, PBM_STEPIT, 0, 0)
Next
PBM_STEPIT = 1029
The progressbar in the VC UI remains stubbornly blank. What am I missing? Some manual setting for the progressbar, or some programmatic setting? How can I check if SendMessage is working?
Thanks,
ns
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Things to check:- Make sure the whole
HWND-passing mechanism is OK by having the VB function output the value of the handle passed and verifying that it is the same as the one you have in your MFC app.
- Try posting messages instead of sending them.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Did Postmessage. Handle passe din is correctly received. Catching a com error in try catch. 0x0014509c - thats whats in the e.description.
Also:
First-chance exception in msway.exe (KERNEL32.DLL): 0xC000008F: Float Inexact Result.
First-chance exception in msway.exe (KERNEL32.DLL): 0xE06D7363: Microsoft C++ Exception.
Does this mean anything?
}
catch(_com_error &e)
{
bstrDesc = e.Description();
}
Thanks,
ns
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Interesting ly the msgbox doesnt fire:
result = PostMessage(PbarHandle, PBM_STEPIT, 0, 0)
MsgBox result
Thanks,
ns
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The VC client calls the VB dll:
{
CoInitialize(NULL);
_Class1Ptr ptr;
ptr.CreateInstance(__uuidof(Class1));
m_Progress1.SetStep(1);
m_Progress1.SetRange(0, 10);
ptr->CheckingStuff(m_Progress1.GetSafeHwnd());
}
in VB there is:
Public Function CheckingStuff(PbarHandle As Long)
The VC compiler grumbles:
error C2664: 'CheckingStuff' : cannot convert parameter 1 from 'struct HWND__ *' to 'long *'
I was told that long in VB should be the type, but apparently not.
I even tried:m_Progress1.GetSafeHwnd()->m_hWnd; and m_Progress1.m_hWnd as the calling function argumnents but thats not right either....
Please help!
Thanks,
ns
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This most likely has to do with the annoying STRICT macro. You can ignore it and simply force the expected type:
long lHwnd=(long)m_Progress1.GetSafeHwnd();
ptr->CheckingStuff(&lHwnd); Good luck.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Thanks, compiles now.
Thanks,
ns
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Hi.
I experience a weird Visual Studio .NET problem and possible bug. I have been using this Visual C++ .NET compiler for a while now, but this problem has never occured. For some reason, Visual C++ wants to rebuild all modules (cpp) whenever I want to run the problem in either debug or release mode. For example, after you run build the problem and run it, you can run it without rebuilding everything if no changes were made. However, now Visual C++ .NET tells me that the programs is out of date everytime I run the program in either debug or release mode. This is true even if I have no changes whatsoever.
Does anyone know a possible reason for this problem?
Thanks,
Kuphryn
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Check the date of all your files inside the project. If some, for some strange reason, is assigned a date in the future this kind of behavior can result.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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Okay. You're right. For some reason the clock on my system is off by eight months!
I reset the date and clock. Everything works now.
Kuphryn
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Does anyone know a possible reason for this problem?
Have a search through (watch the wrapping):
http://groups.google.com/groups?group=microsoft.public.dotnet.languages.vc
Let's just say that VC7 is buggy. VC7.1 (a version that you will have to pay even more money for) might have fixed this.
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I want to make voice chat application in VC++. For this purpose i am looking for some example source code or good resource from where i can learn and develop my own system. If you know any such code/resource then please do tell me. I've found one code here at CP but it is only peer to peer and can only work on LAN. I want to make my application client-server based just like what in Yahoo messenger. I am expert in socket programming as far as sending text is concerned. But i have no idea how to send voice on internet just like Yahoo messenger. I found nothing at MSDN related to this topic; you know how difficult it is sometimes to search MSDN. If you know any such source on MSDN or anywhere else then please tell me. Your advices in this regard are also welcome.
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Hello,
I wonder what is the usage of using Bind method after creating a CSocket in the server. I get an error message when I Bind the socket, however, if I ignore the error, I can still receive the message come from the client. So, what is the usage of using Bind method in server side?
Actually, my code is something like this,
rt = cs.Create(1000, SOCK_STREAM, "127.0.0.1");
if (rt == 0)
Print_Error();
rt = cs.Bind(1000, "127.0.0.1");
if (rt == 0)
Print_Error();
When the program is going to bind the socket, it return error message 10022, which the documentation told me that is "invalid argument" exception. Can someone told me what is my problem?
Thanks!
Nachi
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You are already binding the socket in the constructor, so the extra call to Bind is superfluous. I guess you are misinterpreting the error code (this should be retrieved with WSAGetLastError and looked upon in the Winsock error table provided by the documentation.
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
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So, you mean by just do this,
rt = cs.Create(1000, SOCK_STREAM, "127.0.0.1");
I have already bind the socket??
Thanks!
Nachi
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Hello,
Is there any way to use CArchive with memory mapped files? If yes, does anyone have an example? If not, how can I pass binary data in the text buffer, i.e. how to I cast ints and floats into a text buffer? Thanks.
Ted
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