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[Solved]Calling thread from DLL

 
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Henley
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PostPosted: Mon Mar 03, 2008 6:44 pm    Post subject: [Solved]Calling thread from DLL Reply with quote
So basically I have a thread in my dll and a checkbox in my C# gui. I want it to call the thread from the dll when the checkbox is checked.

Something like this:
Code:
if (mycheckbox.Checked == true)
{
//this is in C++: CreateThread(0, 0, (LPTHREAD_START_ROUTINE)&ThreadNAME, 0, 0, 0);
}


Would I be able to do that? And if I use DllImport for my dll, would there be no parameters?

Last edited by Henley on Mon Mar 03, 2008 7:23 pm; edited 1 time in total
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lurc
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PostPosted: Mon Mar 03, 2008 6:52 pm    Post subject: Reply with quote
That woudnt work.

If you made a sepearte dll in C++ then u would DllImport it first, get the function that u wanna use.

then do

Code:
if ( myCheckBox.Checked == true )
{
    CallMyFunction(); // function name that u imported.
}


and in your C++ Dll

Code:
void __declspec(dllexport) CallMyFunction()
{
     hTheadHandle = CreateThread( 0, 0, (LPTHREAD_START_ROUTINE)&ThreadNameInCDll, 0, 0, 0 );
}

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Henley
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PostPosted: Mon Mar 03, 2008 7:20 pm    Post subject: Reply with quote
lurc wrote:
That woudnt work.

If you made a sepearte dll in C++ then u would DllImport it first, get the function that u wanna use.

then do

Code:
if ( myCheckBox.Checked == true )
{
    CallMyFunction(); // function name that u imported.
}


and in your C++ Dll

Code:
void __declspec(dllexport) CallMyFunction()
{
     hTheadHandle = CreateThread( 0, 0, (LPTHREAD_START_ROUTINE)&ThreadNameInCDll, 0, 0, 0 );
}


Thanks thats exactly what I needed lol
forgot to mention that the dll was made in C++ o.o
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Flyte
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PostPosted: Mon Mar 03, 2008 7:26 pm    Post subject: Reply with quote
Code:
CreateThread( 0, 0, (LPTHREAD_START_ROUTINE)GetProcAddress(GetModuleHandle("lol.dll"), "ohhai"), 0, 0, 0);
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lurc
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PostPosted: Mon Mar 03, 2008 7:33 pm    Post subject: Reply with quote
Flyte wrote:
Code:
CreateThread( 0, 0, (LPTHREAD_START_ROUTINE)GetProcAddress(GetModuleHandle("lol.dll"), "ohhai"), 0, 0, 0);


He Said that he's Calling it from a C# GUI, and he wants to call the function to create the thread within his dll.

C# doesnt even have CreateThread unless you Import it.
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samuri25404
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PostPosted: Mon Mar 03, 2008 9:13 pm    Post subject: Reply with quote
lurc wrote:
Flyte wrote:
Code:
CreateThread( 0, 0, (LPTHREAD_START_ROUTINE)GetProcAddress(GetModuleHandle("lol.dll"), "ohhai"), 0, 0, 0);


He Said that he's Calling it from a C# GUI, and he wants to call the function to create the thread within his dll.

C# doesnt even have CreateThread unless you Import it.


Bullshit.

Thread t = new Thread(new ThreadStart(VoidMethod_NoParamsHere));
t.Start();
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lurc
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PostPosted: Mon Mar 03, 2008 9:33 pm    Post subject: Reply with quote
samuri25404 wrote:
lurc wrote:
Flyte wrote:
Code:
CreateThread( 0, 0, (LPTHREAD_START_ROUTINE)GetProcAddress(GetModuleHandle("lol.dll"), "ohhai"), 0, 0, 0);


He Said that he's Calling it from a C# GUI, and he wants to call the function to create the thread within his dll.

C# doesnt even have CreateThread unless you Import it.


Bullshit.

Thread t = new Thread(new ThreadStart(VoidMethod_NoParamsHere));
t.Start();


I meant The API Function, not the C# Threading.
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samuri25404
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PostPosted: Tue Mar 04, 2008 5:21 pm    Post subject: Reply with quote
Oh, my bad.

Seemed like you were saying that you couldn't create threads in C# (which I disproved above).
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