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i_main.pas
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i_main.pas
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//------------------------------------------------------------------------------
//
// DoomXS - A basic Windows source port of Doom
// based on original Linux Doom as published by "id Software"
// Copyright (C) 1993-1996 by id Software, Inc.
// Copyright (C) 2021-2022 by Jim Valavanis
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, inc., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
//
//------------------------------------------------------------------------------
// Site: https://sourceforge.net/projects/doomxs/
//------------------------------------------------------------------------------
unit i_main;
interface
uses
Windows,
d_delphi;
var
hMainWnd: HWND = 0;
const
AppTitle = 'DoomXS';
procedure DoomMain;
implementation
uses
Messages,
d_main,
i_input,
i_system;
function WindowProc(hWnd: HWND; Msg: UINT; wParam: WPARAM; lParam: LPARAM): LRESULT; stdcall; export;
begin
if not I_GameFinished then
begin
case Msg of
WM_SETCURSOR:
begin
SetCursor(0);
end;
WM_SYSCOMMAND:
begin
if wParam = SC_SCREENSAVE then
begin
Result := 0;
Exit;
end;
end;
WM_ACTIVATE:
begin
I_SynchronizeInput(wparam <> WA_INACTIVE);
end;
WM_CLOSE:
begin
Result := 0; // Preserve closing window by pressing Alt + F4
Exit;
end;
WM_DESTROY:
begin
I_Destroy;
end;
end;
end;
Result := DefWindowProc(hWnd, Msg, WParam, LParam);
end;
procedure DoomMain;
var
WindowClass: TWndClass;
begin
I_SetDPIAwareness;
ZeroMemory(@WindowClass, SizeOf(WindowClass));
WindowClass.lpfnWndProc := @WindowProc;
WindowClass.hbrBackground := GetStockObject(DKGRAY_BRUSH);
WindowClass.lpszClassName := 'DoomXS';
if HPrevInst = 0 then
begin
WindowClass.hInstance := HInstance;
WindowClass.hIcon := LoadIcon(HInstance, 'MAINICON');
WindowClass.hCursor := LoadCursor(0, nil);
if RegisterClass(WindowClass) = 0 then
Halt(1);
end;
hMainWnd := CreateWindowEx(
0,
WindowClass.lpszClassName,
AppTitle,
WS_OVERLAPPED,
0, 0, 0, 0,
0,
0,
HInstance,
nil);
SetWindowLong(hMainWnd, GWL_STYLE, 0);
D_DoomMain;
end;
end.