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C++ dll form problem

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Snootae
Grandmaster Cheater

Reputation: 0

Joined: 16 Dec 2006
Posts: 969
Location: --->

Posted: Wed Mar 26, 2008 2:50 am Post subject: C++ dll form problem

hey guys, im trying to make a win32 gui in a dll, but i've hit a little snag

my code so far is:

Code:

#include "Includes.h"
#include "process.h"

void ShowForm( void *dummy );

void ShowForm( void *dummy ) //Thread ShowForm
{
{

LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
char szClassName[ ] = "WindowsApp";
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nFunsterStil)

{
HWND hwnd;
MSG messages;
WNDCLASSEX wincl;
/* The Window structure */
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure;
wincl.style = CS_DBLCLKS;
wincl.cbSize = sizeof (WNDCLASSEX);
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL;
wincl.cbClsExtra = 0;
wincl.cbWndExtra = 0;

wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
if (!RegisterClassEx (&wincl))
return 0;

hwnd = CreateWindowEx (
0,
szClassName,
"Windows App",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
544,
375,
HWND_DESKTOP,
NULL,
hThisInstance,
NULL
);
ShowWindow (hwnd, nFunsterStil);
while (GetMessage (&messages, NULL, 0, 0))
{
TranslateMessage(&messages);
DispatchMessage(&messages);
}

return messages.wParam;

}

}
_endthread();//End Thread ShowForm
}

that doesn't work only because you cant define a function inside another, but i need to be able to call it on a thread, i need this bit:

Code:

ShowWindow (hwnd, nFunsterStil);

but it needs to be able to access the values in the other function, and i cant figure out how to do that

does anyone know how i could share the nFunsterStil value/properties or another way to make this work??

bwt, im trying to just get the form to show when the dllmain process attach function is reached, so if anyone has any other ideas on how to show this form when the dll loads, please tell
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I'm a spammer

Reputation: 0

Joined: 18 Apr 2007
Posts: 5094
Location: Israel.

Posted: Wed Mar 26, 2008 11:31 am Post subject:

ShowWindow Messages.

atom0s
Moderator

Reputation: 205

Joined: 25 Jan 2006
Posts: 8585
Location: 127.0.0.1

Posted: Wed Mar 26, 2008 3:17 pm Post subject:

Why are you trying to declare things inside another function? Create your message loop as its own function like normal and just pass it as a param to anyting that requires it..

Code:

void ShowForm( void *dummy ) //Thread ShowForm
{
{

LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
char szClassName[ ] = "WindowsApp";
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nFunsterStil)

{

There is just so much wtf going on in that chunk of code lol..

Firstly:

Code:

LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);

Your function prototypes should be at the top of your source file, under the includes and any needed variable defines.

Next:

Code:

int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nFunsterStil)

This should not be in there.. You are making an injected dll, you do not need WinMain. Create a thread that calls your ShowForm function with the code thats in it.

You can obtain the hInstance of the current module using:

Code:

GetModuleHandle( NULL );

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