Using VC++ 2010 Express. I am creating a dll to export a simple Multiply function so I can use it in Excel/VBA
These e are the steps I am following :
. Create a Win32 C++ Project and give a name. For example: CallDllFromVBA
. Select the DLL option in the Wizard and click Finish
. In the CPP file (here CallDllFromVBA.cpp), add the following code
#include "stdafx.h"
int _stdcall Multiply(int x, int y) {
return x * y;
[Code] ....
The Build output show everything is ok as follows :
CallDllFromVBA.cpp
CallDllFromVBA.vcxproj -> c:documents and settingsadministrateurmes documentsvisual studio 2010ProjectsCallDllFromVBADebugCallDllFromVBA.dll
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========
In VBA, I insert a module and add the following code:
Declare Function Multiply Lib _
"c:documents and settingsadministrateurmes documentsvisual studio 2010ProjectsCallDllFromVBADebugCallDllFromVBA.dll" _
(ByVal x As Long, ByVal y As Long) As Long
Sub test()
MsgBox Multiply(2, 4)
End Sub
When I run the Test sub I get the error: 453 - Can't find dll entry point
I also opened the CallDllFromVBA dll with Dependency walker and I can't find the Multiply export function - In fact, the dependency walker doesn't show any function exports at all for the CallDllFromVBA dll !
I hope that this isn't an elementary question to you more experienced people, but I am having some trouble with my .DLL file. I haven't ever had a problem with compiling and linking it with my main project before, but it appears now some sort of problem has started. The message that appears is :
I have no qualms with posting my .DLL source, as it is not particularly long or complex. It seems the problem functions are the last two I've added ( load_sound( ) and play_sound( ) ).
Here is what I'm linking it with :
Code:
-------------- Build: Debug in game (compiler: GNU GCC Compiler)--------------- mingw32-g++.exe -shared -Wl,--output-def=binDebuglibgame.def -Wl,--out-implib=binDebuglibgame.a -Wl,--dll -L"F:FBLARandom gamegame.dll.sourcegame" objDebugconversion.o objDebugprojectile.o objDebugSDL_utility_functions.o objDebug ime.o -o binDebuglibgame.dll -lSDL -lSDL_mixer Creating library file: binDebuglibgame.a
Output size is 49.10 KB Process terminated with status 0 (0 minutes, 0 seconds) 0 errors, 0 warnings (0 minutes, 0 seconds) projectile.c :
I am stuck in visual studio 2010 file I/O ... i placed file1 file2 using the following program under VS2010/projects/projectname/file, file1 and also in debug also once......I am actually using cmd line arguments in debug mode
Code: // feof files.cpp : Defines the entry point for the console application. //
#include "stdafx.h" #include<stdio.h> #include<stdlib.h> #include<conio.h> int main(int argc, char* argv[])
[Code] ....
I dont think in C++ forum the printf will do any problem...when i run the program it says "cannot open source file" and a window appears saying"Debug assertion failed"....and other details such as Expressionstream!=NULL).perror
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Note: 1. there are 610200 RGB point, but my new file only created 176196 RGB point. 2. RGB range: 0-255. (0,0,0)= black; (255,255,255)= white 3. When reporting the location of your dark pixels, assume the upper left corner of the image is location 1, 1
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#include <iostream> #define pi 3.141592 using namespace std; int main() { double r, h; //declare variables for radious and height double Surfacearea;
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-- the code of my project:
filed = open( "/dev/uart_0", O_RDWR ); if (filed < 0){ printf("the port can't be opened ");
im trying to read employee information from a file using structures but im having problems with getting the file to open and read in the information
Code:
Write a programt that inputs (at most 50) records from a sequential file #include <stdio.h> #include <stdlib.h> struct employee // employee structure definition }
I have been looking and i'm stuck on this. I wrote this program to find quarks and their charge and mass but i need it to give me 5 different ones. so i made an array but when i run it it gives me this
"Unhandled exception at 0x001631c6 in DiasQuarkP1V0.exe: 0xC0000005: Access violation reading location 0xd5bf0c38." and it shows the xstring library.
this is my main, is their anything wrong with my code?
#include "StdAfx.h" #include <stdio.h> #include <string> using namespace std; int main() { Quark solution[5]={};
I wrote a program with a recursive() called finder. But it dose not work properly,at run time it becomes to a infinite status. How to detect the error at runtime. Here is the code.
#include<stdio.h> void finder(int x,int y); int tot;
[Code] ....
I think the error is the changing value of x after a round of for loop.
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Class ClassA { ... } ClassA *key1 = new ClassA(); ClassA *key2 = new ClassA(); ClassA *key3 = new ClassA();
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int main() { int number[20]; int duplicateNumber[20]; int i, j, k, counter = 0; // Get number input from the user for (i = 0; i < 20; i++) { printf("Please enter a whole number %d: ", (i + 1));
