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we had the same issues
My solution was to release 2 forms of the lib both with the .lib and .dll files
The first was the standard release build
the second was a "fake" debug build,
in the C++ settings it had Optimizations turned on, and Debug info turned off. BUT in the COde Generation setion it used the Debug Multithreaded DLL libs as opposed to the Multithreaded DLL libs. The linker settings were the same as release - i.e. no debug info
This seemed to do the trick
If this is wrong please don't shoot me 
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I am attempting to create a doc/view application with dialog boxes. On startup, I am looking to launch a dialog box, once the view is created, to collect some information. I can easily create a function in the menu to do this, but I'd rather the dialog box launch automatically. How do I do this?
Thanks in advance.
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Launch the dialog at the end of OnInitialUpdate.
Tomasz Sowinski -- http://www.shooltz.com
Free your mind and your ass will follow.
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I tried to launch the dialog box at the end of OnInitialUpdate, in the View class, but it does not create the view first. Is there a function that is processed after the view and the doc class are created, as if a user selected FILE->LAUNCH? Thanks again for the comment.
Rich
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Well, technically speaking the view is created, but its frame isn't visible at this moment. If you need to show dialog when view is visible, call PostMessage (not SendMessage!) in OnInitialUpdate and provide handler for appropriate command in CYourView:
void CYourView::OnInitialUpdate()
{
...
PostMessage(WM_COMMAND, ID_SHOW_YOUR_DIALOG);
}
ID_SHOW_YOUR_DIALOG may appear in menu as well. Messages posted with PostMessage are going through message queue and will be processed after view initialization ends.
Tomasz Sowinski -- http://www.shooltz.com
Free your mind and your ass will follow.
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What I need to do is to install ODBC DSNs while installing my main application.
I am trying to use the CallDLLFx function of InstallShield to do this - the DLL has one function that installs the DSNs which InstallShield can call.
My function declaration is
static LONG APIENTRY CreateApplicationDSN(HWND hWnd,LPLONG lplValue,LPSTR lpszValue);
My CallDLLFx in InstallShield looks like this:
<br />
function SetupODBCDrivers()<br />
<br />
STRING szDll;<br />
STRING szFunction;<br />
LONG lValue;<br />
STRING svValue;<br />
LONG lResult;<br />
<br />
begin<br />
szDll = TARGETDIR ^ "ConfigAppODBC.dll";<br />
szFunction = "CreateApplicationDSN";<br />
svValue = "";<br />
lValue = 0;<br />
lResult = CallDLLFx ( szDll , szFunction, lValue, svValue );<br />
<br />
if(lResult = 0 || lResult = 1)<br />
then<br />
return lResult;<br />
else<br />
return -1;<br />
endif;<br />
end;<br />
<br />
I consistently get a -1 from this function. The DLL function ConfigAppDSN returns a 0 or a 1 based on a successful install or not.
What am I doing wrong. One thing I do know is that I do not have the ConfigAppDSN function in the .DEF file. When I do put it there, I get a linker LINK2001 error.
Thanks
ashish
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From what I remember (back in 1999), CallDLLDx lets you call a DLL function but you must respect rules for the function. I believe you have a topic in InstallShield doc that tells you what is the signature of the outside function you call. In other words, I believe you need to have an intermediate DLL exporting an entry-point function with a known signature. And this DLL will do ::LoadLibrary("configappodbc.dll") and ::GetProcAddress...
And I swallow a small raisin.
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Ok, after the first day back to school I am working on a little app, which is an assignment. I am not asking for anyone to do it for me, however this error doesn't make sense to me. Here is the contents of my header file:
#ifndef HW1_H
#define HW1_H
#include <fstream.h>
#include <iomanip.h>
#define ListOfDivers "divers.dat"
#define OutputFile "output.dat"
#define ReportFile "report.dat"
const int Total_Divers = 24;
const int Best_Divers = 12;
const int Num_Of_Dives = 10;
const int Num_Of_Scores = 7;
struct Dive_Stats
{
float difficulty;
float scores[Num_Of_Scores];
};
struct Diver_Info
{
char Diver_Name[80];
Dive_Stats Dives[Num_Of_Dives];
float Total_Score;
};
void Input_Data(Diver_Info []);
void Calculate_Totals(Diver_Info []);
void Create_Report(Diver_Info []);
void Sort_Divers_Scores(Diver_Info []);
void Create_Output(Diver_Info []);
#endif
When I am compiling I get several errors that point to my two structures. The first error points to
float scores[Num_Of_Scores];
saying error C2057: expected constant expression. Does that make sense?? 
Thanks for any tips.
Nick Parker
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Not sure, but why do you have 2 empty includes at the top with no headers specified?
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that's a problem with the CP boards, not Nick's code.
Aiei i ea eio aoa i e eio e aigoa
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I think I found the error, I was just trying to compile the .C files in VS, which caused it to flake out because of my syntax, thanks guys.
Nick Parker
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C++ on a unix box, so he has asked us to use a .C extension. When I try this on VS and save my two .C files as .cpp I still get the same errors. The two structures themselves appear to be in the correct format, I have no idea why it is telling me that I need a constant expression there.
Nick Parker
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So apparently the compiler decided it's a C program. In C you'll need to #define your constants. While language allows const modifier for variables, you can't use them as size of array (and, generally speaking, wherever you need a value known at compile time).
Tomasz Sowinski -- http://www.shooltz.com
Free your mind and your ass will follow.
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GCC 3.2 warns about the deprecated fstream.h header, but the structure declarations don't cause any errors.
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It could be that your version on the C/C++ compiler does not support the use of constants ints when declaring an array. It is valid C/C++ in the latest standard, but now all recent compilers currently support it. There is a way around this using what is known as the "enum hack"
enum {Num_of_scores = 7} ;
float scores[Num_of_scores] ;
Most, if not all compiler support this old method, where an enum can be used in the place an int is used.
Roger Allen
Sonork 100.10016
I think I need a new quote, I am on the prowl, so look out for a soft cute furry looking animal, which is really a Hippo in disguise. Its probably me.
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Can anyone point me to a good source of comparison of the various views available in the MFC doc/view architecture? I'd like to know more about the pros and cons of using one view vs. another, and how one might go about choosing the best or most appropriate view for their application.
Thanks!
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We all know how hard it is to figure out our own programs after it has been a while since we programed it. Now, the question is, how do you approach figuring out someone else's Windows program written in C++?
I already know that it's a win32 application (Well, honestly it's a WinCE platform) written with MFC (Functions tailored to fit CE).
Where should I begin to start learning how this software does what it does? At theApp? Just start reveiwing classes and put the pieces together later? Procedurally?
Thanks for your responses. 
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If the program uses doc/view, then document and view classes will contain most interesting stuff. Does your project generate browse info? If not, make a copy and turn browse info generation on. You'll be able to easily look at class hierarchies.
Tomasz Sowinski -- http://www.shooltz.com
Free your mind and your ass will follow.
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Hey! That's really cool.
Is there any documentation on how to effectively use this browser?
{{Opens MSDN....}}
Thanks!
imus de buss
umis de buss
weall mis de buss
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Dear,
I meet a problem to speed up the function from DDB to DIB.
The program I write is to read the wave data from the
data files, then output the wave drawing by BMP files.
And the BMP files may output 8bit, 16bits, 24bits,
32bits.
so, we design it as following,
1. From data file to draw wave
(not need display in screen, draw
draw in Memory DC is OK.
We need create a CBitmap, then use Memory DC
to draw in the CBitmap)
2. Then write them to bitmap files.
So, as you know, we should use GetDibits() function to transfer
from DDB to DIB. But I find that GetDibits() function use much
time, and it cause the reason of the bottleneck of my program.
Because I must speed up my program, I look for your help.
Can you tell me how to speed up the function from DDB to DIB?
Is any other function can substitute the GetDibits() function to
transfer from DDB to DIB?
Or our project design is too complicated, can use other
easy and fast method to complete?
Welcome any suggestion!
Best Regards,
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I think you should use CreateDIBSection and work on DIB exclusively. This gives you additional advantage of direct access to bitmap bits in device independent format - may be helpful if you need to push performance.
Tomasz Sowinski -- http://www.shooltz.com
Free your mind and your ass will follow.
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If an object throws an exception from a constructor, is it considered constructed?
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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