windows-server-2003/base/screg/winreg/cntrtext/showperf/mainwnd.c

/*++
Copyright (c) 1994  Microsoft Corporation

Module Name:
    mainwnd.c

Abstract:
    Main Window procedure for ShowPerf app

Author:
    Bob Watson (a-robw)

Revision History:
    23 Nov 94
--*/
#include <windows.h>
#include "resource.h"
#include "SHOWPERF.h"
//
//  GLOBAL functions
//
LRESULT CALLBACK
MainWndProc(
    HWND   hWnd,       // window handle
    UINT   message,    // type of message
    WPARAM wParam,     // additional information
    LPARAM lParam      // additional information
)
/*++
Routine Description:
    Windows Message processing routine for restkeys application.

Arguments:
    Standard WNDPROC api arguments

ReturnValue:
    0   or
    value returned by DefWindowProc
--*/
{
    LRESULT lResult = ERROR_SUCCESS;
    switch (message) {
    case WM_CLOSE:
        DestroyWindow(hWnd);
        break;

    case WM_DESTROY:
        PostQuitMessage(ERROR_SUCCESS);
        break;

    default:
        lResult = DefWindowProc(hWnd, message, wParam, lParam);
        break;
    }
    return lResult;
}

BOOL
RegisterMainWindowClass(
    HINSTANCE   hInstance
)
/*++
Routine Description:
    Registers the main window class for this application

Arguments:
    hInstance   application instance handle

Return Value:
    Return value of RegisterClass function
--*/
{
    WNDCLASSW wc;

    // Fill in window class structure with parameters that describe the
    // main window.
    wc.style         = CS_HREDRAW | CS_VREDRAW;     // Class style(s).
    wc.lpfnWndProc   = MainWndProc;                 // Window Procedure
    wc.cbClsExtra    = 0;                           // No per-class extra data.
    wc.cbWndExtra    = 0;                           // no extra data bytes.
    wc.hInstance     = hInstance;                   // Owner of this class
    wc.hIcon         = NULL;                        // No Icon
    wc.hCursor       = LoadCursor(NULL, IDC_ARROW); // Cursor
    wc.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1); // Default color
    wc.lpszMenuName  = NULL;                        // No Menu
    wc.lpszClassName = GetStringResource(hInstance, IDS_APP_WINDOW_CLASS); // Name to register as

    // Register the window class and return success/failure code.
    return (BOOL) RegisterClassW(& wc);
}

HWND
CreateMainWindow(
    HINSTANCE hInstance
)
{
    HWND hWnd;      // return value
    RECT rDesktop;  // desktop window
    
    GetWindowRect(GetDesktopWindow(), & rDesktop);

    // Create a main window for this application instance.
    hWnd = CreateWindowExW(
            0L,                                                 // make this window normal so debugger isn't covered
            GetStringResource(hInstance, IDS_APP_WINDOW_CLASS), // See RegisterClass() call.
            GetStringResource(hInstance, IDS_APP_TITLE),        // Text for window title bar.
            (DWORD) (WS_OVERLAPPEDWINDOW),                      // Window style.
            rDesktop.right + 1,                                 // position window off desktop
            rDesktop.bottom + 1,
            1,
            1,
            (HWND) NULL,                                        // Overlapped windows have no parent.
            (HMENU) NULL,                                       // use class menu
            hInstance,                                          // This instance owns this window.
            NULL                                                // not used
    );

    // If window could not be created, return "failure"
    if (hWnd != NULL) {
        DialogBox(hInstance, MAKEINTRESOURCE(IDD_MAIN), hWnd, MainDlgProc);
        PostMessage(hWnd, WM_CLOSE, 0, 0); // pack up and leave
    }
    return hWnd;
}