#define WIN32_LEAN_AND_MEAN
 
#include <windows.h>
 
HINSTANCE hInst;
 
HWND MainWnd;
 
const char *AppName = "OLIST", *AppTitle = "Order List Lookup";
 
static bool CreateMainWindow (int ShowValue);
 
LRESULT CALLBACK MainWndProc (HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam);
 
// =========================================================================================
 
int APIENTRY WinMain (HINSTANCE Instance, HINSTANCE PrevInst, char *CmdLine, int ShowValue)
 
{
 
MSG Msg;
 
Msg.wParam = -1;
 
hInst = Instance; // Global copy of instance handle.
 
if (CreateMainWindow (ShowValue))
 
{
 
while (GetMessage (&Msg, NULL, 0, 0))
 
{
 
TranslateMessage (&Msg);
 
DispatchMessage (&Msg);
 
}
 
}
 
return Msg.wParam;
 
}
 
// -------------------------------------------------------------------------------------------
 
static bool CreateMainWindow (int ShowValue)
 
{
 
const UINT STYLE = WS_SYSMENU | WS_MINIMIZEBOX | WS_SIZEBOX;
 
const UINT EX_STYLE = WS_EX_CLIENTEDGE;
 
WNDCLASSEX Wc;
 
Wc.cbSize = sizeof WNDCLASSEX;
 
Wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
 
Wc.lpfnWndProc = WNDPROC (MainWndProc);
 
Wc.cbClsExtra = 0;
 
Wc.cbWndExtra = 0;
 
Wc.hInstance = hInst;
 
Wc.hIcon = 0;
 
Wc.hCursor = LoadCursor (NULL, IDC_ARROW);
 
Wc.hbrBackground = HBRUSH (COLOR_BTNFACE + 1);
 
Wc.lpszClassName = AppName;
 
Wc.lpszMenuName = NULL;
 
Wc.hIconSm = 0;
 
if (RegisterClassEx (&Wc))
 
{
 
SIZE Wnd;
 
// Determine windows size based on current resolution. 38% width 75% height.
 
Wnd.cx = GetSystemMetrics (SM_CXSCREEN) >> 1;
 
Wnd.cx -= Wnd.cx >> 2;
 
Wnd.cy = GetSystemMetrics (SM_CYSCREEN);
 
Wnd.cy -= Wnd.cy >> 2;
 
MainWnd = CreateWindowEx (EX_STYLE, AppName, AppTitle, STYLE,
 
CW_USEDEFAULT, CW_USEDEFAULT, Wnd.cx, Wnd.cy,
 
NULL, NULL, hInst, NULL);
 
if (MainWnd)
 
return true; 
 
}
 
return false; // Default return value, function failed.
 
}
 
// -------------------------------------------------------------------------------------------
 
LRESULT CALLBACK MainWndProc (HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
 
{
 
switch (Msg)
 
{
 
// ________________________________________________________________________________
 
case WM_CREATE:
 
ShowWindow (hWnd, SW_NORMAL);
 
break;
 
// ________________________________________________________________________________
 
case WM_DESTROY:
 
PostQuitMessage (0);
 
break;
 
// ________________________________________________________________________________
 
default:
 
return DefWindowProc (hWnd, Msg, wParam, lParam);
 
}
 
return 0; // Default value for applciation handled messages.
 
}