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LRESULT CALLBACK wndproc(HWND,UINT,WPARAM,LPARAM);
class GUI
{
int x;
public:
friend LRESULT CALLBACK wndproc(HWND,UINT,WPARAM,LPARAM);
void Run(HINSTANCE hi,HWND hwnd);
bool wm_create(HWND hwnd,UINT msg ,WPARAM wp,LPARAM lp); // handle the WM_CREATE message
};
bool GUI::wm_create(HWND hwnd,UINT msg ,WPARAM wp,LPARAM lp)
{
MessageBox(hwnd,"It works!","",64);
cout <<x<<endl;
}
void GUI::Run(HINSTANCE hi,HWND hwnd)
{
MSG messages;
WNDCLASSEX wincl;
wincl.hInstance = hi;
wincl.lpszClassName = "mywnd";
wincl.lpfnWndProc = wndproc;
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 = 4;
wincl.cbWndExtra = 0;
wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx (&wincl))
return;
/* The class is registered, let's create the program*/
hwnd = CreateWindowEx (
0, /* Extended possibilites for variation */
"mywnd", /* Classname */
"Code::Blocks Template Windows App", /* Title Text */
WS_OVERLAPPEDWINDOW, /* default window */
CW_USEDEFAULT, /* Windows decides the position */
CW_USEDEFAULT, /* where the window ends up on the screen */
544, /* The programs width */
375, /* and height in pixels */
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hi, /* Program Instance handler */
NULL /* No Window Creation data */
);
ShowWindow (hwnd, 1);
SetWindowLong(hwnd,GWL_USERDATA,(LONG)this);
while (GetMessage (&messages, NULL, 0, 0))
{
TranslateMessage(&messages);
DispatchMessage(&messages);
}
}
LRESULT CALLBACK wndproc(HWND hwnd,UINT msg,WPARAM wp,LPARAM lp)
{
GUI *gui=(GUI*)GetWindowLong(hwnd,GWL_USERDATA);
switch(msg)
{
case WM_CREATE:
gui->wm_create(hwnd,msg,wp,lp);
return 0;
}
return DefWindowProc(hwnd,msg,wp,lp);
}
int main()
{
HWND hwnd;
GUI gui;
gui.Run(GetModuleHandle(0),hwnd);
}
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