static LRESULT CALLBACK windowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {
Win32WindowImpl* windowImpl;
if (message == WM_CREATE) {
// save instance pointer in userdata field on init
windowImpl = (Win32WindowImpl*) ((LPCREATESTRUCT)lParam)->lpCreateParams;
SetWindowLong(hwnd, GWL_USERDATA, (long)windowImpl );
} else {
// get instance pointer from userdata field
windowImpl = (Win32WindowImpl*) GetWindowLong(hwnd, GWL_USERDATA);
}
// delegate to class method
if (windowImpl)
return windowImpl->processMessage(hwnd, message, wParam, lParam);
else
return DefWindowProc(hwnd,message,wParam,lParam);
}
// static
LRESULT CALLBACK Win32WindowImpl::delegateWindowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {
#if defined (WIN64) || defined(_MSC_VER)
Win32WindowImpl* windowImpl = (Win32WindowImpl*) GetWindowLongPtr(hwnd, GWLP_USERDATA);
#else
Win32WindowImpl* windowImpl = (Win32WindowImpl*) GetWindowLong(hwnd, GWL_USERDATA);
#endif
return windowImpl->processMessage(hwnd, message, wParam, lParam);
}
// static
LRESULT CALLBACK Win32WindowImpl::windowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {
if (message == WM_CREATE) {
Win32WindowImpl* windowImpl;
LPCREATESTRUCT pCreateStruct = reinterpret_cast<LPCREATESTRUCT>(lParam);
if (gHandle) {
LPMDICREATESTRUCT pMDICreateStruct = reinterpret_cast<LPMDICREATESTRUCT>(pCreateStruct->lpCreateParams);
windowImpl = reinterpret_cast<Win32WindowImpl*>( pMDICreateStruct->lParam );
} else {
windowImpl = reinterpret_cast<Win32WindowImpl*>( pCreateStruct->lpCreateParams );
}
if (windowImpl) {
#if defined (WIN64) || defined(_MSC_VER)
SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)windowImpl );
SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR) delegateWindowProc );
#else
SetWindowLong(hwnd, GWL_USERDATA, (long) windowImpl );
SetWindowLong(hwnd, GWL_WNDPROC, (long) delegateWindowProc );
#endif
return windowImpl->processMessage(hwnd, message, wParam, lParam);
}
}
return gDefWindowProc(hwnd, message, wParam, lParam);
}
