GetProcAddress is a function in the Windows API for getting addresses of functions in dynamically loaded libraries
Questions tagged [getprocaddress]
106 questions
53
votes
3 answers
Load 32-bit DLL library in 64-bit application
Is there a way to load a 32-bit DLL library (something with the same usage as LoadLibrary) I would like to use that function along with GetProcAddress.
I looked at WOW, but it does not seem to offer the functionality. The functionality should exist,…
adk
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23
votes
3 answers
GetProcAddress function in C++
Hello guys: I've loaded my DLL in my project but whenever I use the GetProcAddress function. it returns NULL! what should I do?
I use this function ( double GetNumber(double x) ) in "MYDLL.dll"
Here is a code which I used:
typedef double…
Alireza
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- 1
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14
votes
4 answers
C# GetProcAddress Returns Zero
For some reason, whenever my C# .NET 2.0 application makes a call to GetProcAddress it always returns zero.
public class MyClass
{
internal static class UnsafeNativeMethods
{
[DllImport("kernel32.dll", CharSet = CharSet.Auto,…
Jim Fell
- 13,750
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8
votes
2 answers
GetProcAddress cannot find my functions
I made a DLL with a function named "render()" and I want to load it dynamically to my application, but GetProcAddress cannot find it. Here's the DLL .h:
#ifdef D3D_API_EXPORTS
#define D3D_API_API __declspec(dllexport)
#else
#define D3D_API_API…
SurvivalMachine
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7
votes
2 answers
0xC0000005: Access violation executing location 0x00000000
I'm writing an MFC project that try to call a function in the DLL which will return some information in a string. The function in the DLL is as follows:
int GetInfo(char* Info)
The function will return 0 if success. Information will be returned in…
user2845698
- 71
- 1
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6
votes
2 answers
getProcAddress - NULL is returned
I have the following code:
//mydll.cpp
#include
#include
#define STDOUT_FILEDESC 1
class MYSTDOUT {
bool shouldClose;
bool isBuffered;
public:
MYSTDOUT(bool buf = true, bool cl =…
YAKOVM
- 9,805
- 31
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- 217
5
votes
2 answers
Difference between dllimport and getProcAddress
First, I know that it doesn't make sense to compare the dllimport attribute and the getProcAddress function directly. Rather, I am interested in comparing two pieces of code, that achieve basically the same thing - calling a function in a dll - by…
Boris
- 5,094
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- 71
5
votes
5 answers
GetProcAddress() failing, error 127
Here's my DLL code:
#include
#include
int sysLol(char *arg);
int sysLol(char *arg)
{
std::cout<
#include
#include…
Moon
- 329
- 2
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- 20
5
votes
2 answers
GetProcAddress returns 0 For All Functions
First of all yes I have searched this for a while now and can't find any answers relevant to my case. Basically I am trying to get the address of a function in a windows DLL (dnsapi.dll) and GetProcAddress is returning 0. After a while of scratching…
Rob Lennon
- 63
- 5
4
votes
0 answers
Call into another DLL takes more time than it should
I have added the following functionality to an existing native C++ application:
A 3rd party DLL is loaded via LoadLibraryA(...)
A function pointer is obtained from the DLL via GetProcAddress(...)
The function is called
While this basically works…
Boris
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4
votes
1 answer
GetProcAddress returning NULL
I'm trying to load a dll using LoadLibrary and GetProcAddress. LoadLibrary returns a valid handle but my calls to GetProcAddress return NULL. A call to GetLastError returns 87 which is ERROR_INVALID_PARAMETER. I verified that the function name I'm…
Ian Burris
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4
votes
1 answer
How to call MessageBox with GetProcAddress function?
I want to call MessageBox() function in such way:
1). load needed library
2). get the function address
3). call it
So, for such aim as I understand, I should define new type with all types of arguments in MessageBox function.
It returnes INT and…
user1131997
3
votes
3 answers
Dynamically resolve C stdlib functions from .NET
I want to resolve the addresses of functions like those from the C stdlib such as malloc at run-time from .NET code (so I can JIT machine code that calls to these addresses for my VM). I believe I should use LoadLibrary and GetProcAddress supplying…
J D
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3
votes
1 answer
GetProcAddress returns NULL
I have to use a simple function from a DLL; I am able to load the library but GetProcAddress returns NULL. I think I understood name mangling but maybe I'm doing something wrong. Thanks (Code follows, asap I'll add other information…
gc5
- 9,468
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3
votes
1 answer
GetModuleHandle(), for a DLL in another process
The title explains this all really, I have a process tapping into another process. I need to be able to GetModuleHandle, on this program for a certain DLL which isn't Windows standard, and I don't have the source code to the main program.
I need to…
user1591117
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