C / C++ / MFC

Problem creating a simple DLL in c++

1-Apr-09 8:17

Thanks! This is what I asked. Excellent. Straight forward & a neat reply.

modified on Wednesday, April 1, 2009 2:36 PM

snouto1-Apr-09 5:14

snouto

1-Apr-09 5:14

i need to create a simple win32 dll in microsoft .net studio , i tried merely of times

i build everything successfully but in the debug folder there is no file with .dll extension

how can i build the dll successfully ?

is there anybody to help me please

i got these files in the debug folder

helloworld.obj
helloworld.bla bla .manifest

and other files but there is no .dll file?

how can i generate that please help

Human knowledge belongs to the world.

Re: Problem creating a simple DLL in c++

coderormnger1-Apr-09 5:16

coderormnger

1-Apr-09 5:16

you can see the outPut path of project.

Re: Problem creating a simple DLL in c++

grassrootkit1-Apr-09 5:23

Re: Problem creating a simple DLL in c++

1-Apr-09 5:23

Come one level out from the current folder. You will again find folders named "Debug"/ "release". Your DLL will be relaxing there.

ThatsAlok1-Apr-09 18:21

ThatsAlok

1-Apr-09 18:21

Have you selected right project! i.e. Window DLL

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
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GetAsyncKeyState - help with dynamic link library

Member 2362621-Apr-09 4:35

Re: GetAsyncKeyState - help with dynamic link library

1-Apr-09 4:35

I want to use the function GetAsyncKeyState(VK_LBUTTON) to test the state of the left mouse button.
Internet info page at:
http://msdn.microsoft.com/en-us/library/ms646293(VS.85).aspx
said that function uses user32.dll and import library User32.lib with the function declared in Winuser.h, include Windows.h

I haven't written code that uses dynamic link libraries. I am using Microsoft Visual C++ Version 6.0 and Windows XP

If I simply code

#include "Windows.h"

int state;

state = GetAsyncKeyState(VK_LBUTTON);

the code compiles but will always return zero as the value of state of the mouse button.
How do I use the dynamic link library in my simple program, so that the state of the mouse button can be read by my program?
Thanks!

Cedric Moonen1-Apr-09 4:41

Cedric Moonen

1-Apr-09 4:41

What you did was correct. If you have problems, it's not because you failed to load the dll (otherwise the problem would occur earlier).
Are you sure you call that function at the correct place ? Where are you calling it ?

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: GetAsyncKeyState - help with dynamic link library

Member 2362621-Apr-09 15:48

Re: GetAsyncKeyState - help with dynamic link library

1-Apr-09 15:48

Here is my code. I have two loops, and during the execution of those loops I try to hit the mouse button, but always get zero when I test the state of the mouse button

void DoLoop(void)
{
long int count;
int value,i;

FILE *ofile;

ofile = fopen("test.txt","wt");
fprintf(ofile,"In Loop\n");
for (i = 0; i < 100; i++)
{
for (count=0; count < 1000000; count++)
{
value = GetAsyncKeyState(VK_LBUTTON);
if (value > 0) fprintf(ofile,"Value of VK_LBUTTON is %li\n",value);
}
printf("i = %i count = %li\n",i,count);
}
fclose(ofile);
}

ThatsAlok1-Apr-09 18:26

ThatsAlok

1-Apr-09 18:26

are you pressing the LButton during execution of program? more over it's seems to be console based applciation? is i am correct?

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
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Re: GetAsyncKeyState - help with dynamic link library

Member 2362621-Apr-09 20:35

Re: GetAsyncKeyState - help with dynamic link library

1-Apr-09 20:35

Yes, you are correct. I just did a quick console application to test things. And yes I am pushing the mouse key during the execution.

Member 2362621-Apr-09 21:05

How to make Matrix Using C [modified]

1-Apr-09 21:05

I found the problem with my code. The function sets the most significant bit, so the value becomes negative. In my code I was testing for a value greater than zero instead of a non-zero value.

mmlyh081-Apr-09 3:54

mmlyh08

1-Apr-09 3:54

i need the code for Programming C of this question. urgent... anyone please help me...

must using "array" or "for loop"

1 1 1 1 1 0
1 1 1 1 0 2
1 1 1 0 2 2
1 1 0 2 2 2
1 0 2 2 2 2
0 2 2 2 2 2

modified on Wednesday, April 1, 2009 10:18 AM

Stuart Dootson1-Apr-09 4:00

Stuart Dootson

1-Apr-09 4:00

int Matrix[6][6] = 
{
   { 1, 1, 1, 1, 1, 0, },
   { 1, 1, 1, 1, 0, 2, },
   { 1, 1, 1, 0, 2, 2, },
   { 1, 1, 0, 2, 2, 2, },
   { 1, 0, 2, 2, 2, 2, },
   { 0, 2, 2, 2, 2, 2, }
};

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Rajesh R Subramanian1-Apr-09 4:20

Rajesh R Subramanian

1-Apr-09 4:20

Good. Now, please show me how to make a matrix of 256x256.

Laugh | :laugh:

It is a crappy thing, but it's life -^ Carlo Pallini

Stuart Dootson1-Apr-09 4:23

Stuart Dootson

1-Apr-09 4:23

Don't push me - I might just do it Smile | :)

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

mmlyh081-Apr-09 4:31

mmlyh08

1-Apr-09 4:31

int table[256][256];
int row;
int column;

for(row=0;row<256;row++)
{
for(column=0;column<256;column++)
printf("%d",table[row][column]);
printf("\n");
}

CPallini1-Apr-09 5:10

CPallini

1-Apr-09 5:10

Sorry your code didn't pass the test, Can you spot why?
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

grassrootkit1-Apr-09 5:31

1-Apr-09 5:31

Why? what's really wrong? I don't find any. May be he's not assigning any value?

CPallini1-Apr-09 5:40

CPallini

1-Apr-09 5:40

He made just one biiiiiiiiiig column (no blanks in the printf)!
Smile | :)

grassrootkit1-Apr-09 6:17

1-Apr-09 6:17

ThatsAlok1-Apr-09 18:32

ThatsAlok

1-Apr-09 18:32

use loop

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

mmlyh081-Apr-09 4:20

mmlyh08

1-Apr-09 4:20

i need do it using array list or for loop wan... thx

Stuart Dootson1-Apr-09 4:26

Stuart Dootson

1-Apr-09 4:26

mmlyh08 wrote:
array list

What do you mean by that? C has no such concept as an 'array list'.

If (as I suspect) this is a homework assignment - do it yourself. Homework's there for you to learn, not (just) because your teacher's a sadistic monster. And if you're not up to doing it...well, software development's not the career for you.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p