wince中不使用SHFullScreen的全屏方法

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#wince #null #windows #system #input #application

本文介绍了一种在Windows CE中不使用SHFullScreen函数创建全屏窗口的方法。通过标准窗口管理调用，寻找任务栏、软键盘输入面板及软键盘按钮的窗口句柄，并调整这些窗口的状态来切换全屏与窗口模式。

wince中不使用SHFullScreen的全屏方法

2008-07-22 12:53

Introduction

The usual method of creating a full screen window in Windows CE involves using the function SHFullScreen. This article describes a method of creating full screen windows with standard window management calls.

The Variables

HWND hWnd;                     // The main window handle

HWND hWndInputPanel = NULL;    // The SIP
HWND hWndTaskBar    = NULL;    // The TaskBar
HWND hWndSipButton  = NULL;    // The SIP Button

BOOL mode = false;             // Our current window mode.  
                               //  True = Fullscreen
                               //  False - Windowed (Startup Default)
Finding the Window Information
The first step is to find the handles of the three main windows that handle the TaskBar, Standard Input Panel (SIP) and SIP Button Bar. This should be done early on in the application during initialization.
void InitFullScreen (void)
{
    hWndInputPanel = FindWindow(TEXT("SipWndClass"), NULL);
    hWndSipButton = FindWindow(TEXT("MS_SIPBUTTON"), NULL);
    hWndTaskBar = FindWindow(TEXT("HHTaskBar"), NULL);
}
Toggling Between The Two Modes
Toggling between the two modes is a simple matter of setting the windows states, and sizing our window appropriately.
To Enter Fullscreen mode we use ShowWindow(HWND,SW_HIDE) on each of the system windows.
To Exit Fullscreen mode we use ShowWindow(HWND,SW_SHOW) on each of the system windows. This will however also show the input panel, which is not desirable, so hWndInputPanel should be ignored.
Sizing the window to the correct size involves a different system call depending on whether you are entering or exiting Fullscreen Mode.
Entering Fullscreen mode we call SetWindowPos(hWnd... using the results from a GetSystemMetrics call.
Exiting Fullscreen mode we call SetWindowPos(hWnd... using the results from a SystemParametersInfo(... call.
void ToggleFullScreen()
{
    RECT rtDesktop;

    if (mode)
    {
        if(hWndTaskBar != NULL)        
        ShowWindow(hWndTaskBar, SW_SHOW);
        //if(hWndInputPanel != NULL)    
        ShowWindow(hWndInputPanel, SW_SHOW);
        //Never forcibly show the input panel
        if(hWndSipButton != NULL)    
        ShowWindow(hWndSipButton, SW_SHOW);

        if(SystemParametersInfo(SPI_GETWORKAREA, 0, &rtDesktop, NULL) == 1)
            SetWindowPos(hWnd,HWND_TOPMOST,0,0,rtDesktop.right - 
        rtDesktop.left,rtDesktop.bottom - rtDesktop.top, SWP_SHOWWINDOW);

        mode = false;
    }
    else
    {
        if (hWndTaskBar != NULL)    ShowWindow(hWndTaskBar, SW_HIDE);
        if (hWndInputPanel != NULL)    ShowWindow(hWndInputPanel, SW_HIDE);
        if (hWndSipButton != NULL)    ShowWindow(hWndSipButton, SW_HIDE);

        SetWindowPos(hWnd,HWND_TOPMOST,0,0,GetSystemMetrics(SM_CXSCREEN),
                GetSystemMetrics(SM_CYSCREEN), SWP_SHOWWINDOW);

        mode = true;
    }
}