desk.c

ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机理和API函数调用几乎相同。甚至可以兼容XP的程序。喜欢研究系统内核的人可以看一看。

/* $Id: desk.c 27970 2007-07-28 19:56:15Z weiden $
 *
 * COPYRIGHT:       See COPYING in the top level directory
 * PROJECT:         ReactOS Display Control Panel
 * FILE:            lib/cpl/desk/desk.c
 * PURPOSE:         ReactOS Display Control Panel
 * 
 * PROGRAMMERS:     Trevor McCort ([e-mail])
 */

#include "desk.h"
#include "preview.h"

#define NUM_APPLETS	(1)

static LONG APIENTRY DisplayApplet(HWND hwnd, UINT uMsg, LPARAM wParam, LPARAM lParam);

extern INT_PTR CALLBACK BackgroundPageProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam);
extern INT_PTR CALLBACK ScreenSaverPageProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam);
extern INT_PTR CALLBACK AppearancePageProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam);
extern INT_PTR CALLBACK SettingsPageProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam);

HINSTANCE hApplet = 0;

/* Applets */
APPLET Applets[NUM_APPLETS] = 
{
    {
        IDC_DESK_ICON,
        IDS_CPLNAME,
        IDS_CPLDESCRIPTION,
        DisplayApplet
    }
};


static VOID
InitPropSheetPage(PROPSHEETPAGE *psp, WORD idDlg, DLGPROC DlgProc)
{
    ZeroMemory(psp, sizeof(PROPSHEETPAGE));
    psp->dwSize = sizeof(PROPSHEETPAGE);
    psp->dwFlags = PSP_DEFAULT;
    psp->hInstance = hApplet;
    psp->pszTemplate = MAKEINTRESOURCE(idDlg);
    psp->pfnDlgProc = DlgProc;
}


/* Display Applet */
static LONG APIENTRY
DisplayApplet(HWND hwnd, UINT uMsg, LPARAM wParam, LPARAM lParam)
{
    PROPSHEETPAGE psp[4];
    PROPSHEETHEADER psh;
    TCHAR Caption[1024];

    UNREFERENCED_PARAMETER(lParam);
    UNREFERENCED_PARAMETER(wParam);
    UNREFERENCED_PARAMETER(uMsg);
    UNREFERENCED_PARAMETER(hwnd);

    LoadString(hApplet, IDS_CPLNAME, Caption, sizeof(Caption) / sizeof(TCHAR));

    ZeroMemory(&psh, sizeof(PROPSHEETHEADER));
    psh.dwSize = sizeof(PROPSHEETHEADER);
    psh.dwFlags =  PSH_PROPSHEETPAGE | PSH_USECALLBACK | PSH_PROPTITLE;
    psh.hwndParent = NULL;
    psh.hInstance = hApplet;
    psh.hIcon = LoadIcon(hApplet, MAKEINTRESOURCE(IDC_DESK_ICON));
    psh.pszCaption = Caption;
    psh.nPages = sizeof(psp) / sizeof(PROPSHEETPAGE);
    psh.nStartPage = 0;
    psh.ppsp = psp;

    InitPropSheetPage(&psp[0], IDD_BACKGROUND, (DLGPROC) BackgroundPageProc);
    InitPropSheetPage(&psp[1], IDD_SCREENSAVER, (DLGPROC) ScreenSaverPageProc);
    InitPropSheetPage(&psp[2], IDD_APPEARANCE, (DLGPROC) AppearancePageProc);
    InitPropSheetPage(&psp[3], IDD_SETTINGS, (DLGPROC) SettingsPageProc);

    return (LONG)(PropertySheet(&psh) != -1);
}


/* Control Panel Callback */
LONG CALLBACK
CPlApplet(HWND hwndCPl, UINT uMsg, LPARAM lParam1, LPARAM lParam2)
{
    int i = (int)lParam1;

    switch (uMsg)
    {
        case CPL_INIT:
            return TRUE;

        case CPL_GETCOUNT:
            return NUM_APPLETS;

        case CPL_INQUIRE:
            {
                CPLINFO *CPlInfo = (CPLINFO*)lParam2;
                CPlInfo->lData = 0;
                CPlInfo->idIcon = Applets[i].idIcon;
                CPlInfo->idName = Applets[i].idName;
                CPlInfo->idInfo = Applets[i].idDescription;
            }
            break;

        case CPL_DBLCLK:
            Applets[i].AppletProc(hwndCPl, uMsg, lParam1, lParam2);
            break;
    }

    return FALSE;
}


BOOL WINAPI
DllMain(HINSTANCE hInstDLL, DWORD dwReason, LPVOID lpvReserved)
{
    UNREFERENCED_PARAMETER(lpvReserved);

    switch (dwReason)
    {
        case DLL_PROCESS_ATTACH:
            RegisterPreviewControl(hInstDLL);
//        case DLL_THREAD_ATTACH:
            hApplet = hInstDLL;
            break;

        case DLL_PROCESS_DETACH:
            UnregisterPreviewControl(hInstDLL);
            break;
    }

    return TRUE;
}