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<TD align=right><A href="http://www.csdn.net/">CSDN</A> - <A
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<TD><B> 在VC++6.0开发中实现全屏显示</B> wellrock(转贴)
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<TD width=500> 在VC++6.0开发中实现全屏显示</TD></TR>
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<TD align=left bgColor=#ffffff vAlign=top><FONT
size=3>全屏显示是一些应用软件程序必不可少的功能。比如在用VC++编辑工程源文件或编辑对话框等资源时,选择菜单“ViewFull
Screen”,即可进入全屏显示状态,按“Esc”键后会退出全屏显示状态。
<BR> 在VC++6.0中我们用AppWizard按默认方式生成单文档界面的应用程序框架。下面将先讨论点击菜单项“ViewFull
Screen”实现全屏显示的方法,再讲述按“Esc”键后如何退出全屏显示状态。 <BR> 1)
在CMainFrame类中,增加如下三个成员变量。 <BR> Class CMainFrame : public
CFrameWnd <BR> { private: //自己添加的三个成员变量 <BR> WINDOWPLACEMENT
m_OldWndPlacement; //用来保存原窗口位置 <BR> BOOL m_bFullScreen;
//全屏显示标志 <BR> Crect m_FullScreenRect; //表示全屏显示时的窗口位置
<BR> protected: CMainFrame();
<BR> DECLARE_DYNCREATE(CMainFrame)}
<BR> 2)在资源编辑器中编辑菜单IDR_MAINFRAME。在“View”菜单栏下添加菜单项“Full
Screen”。在其属性框中,ID设置为ID_FULL_SCREEN,Caption为“Full
Screen”。还可以在工具栏中添加新的工具图标,并使之与菜单项“Full
Screen”相关联,即将其ID值也设置为ID_FULL_SCREEN。
<BR> 3)设计全屏显示处理函数,在CMainFrame类增加上述菜单项ID_FULL_SCREEN消息的响应函数。响应函数如下:
<BR> void CMainFrame::OnFullScreen()
<BR> {GetWindowPlacement(&m_OldWndPlacement); <BR> Crect
WindowRect; <BR> GetWindowRect(&WindowRect); <BR> Crect
ClientRect; <BR> RepositionBars(0, 0xffff,
AFX_IDW_PANE_FIRST, reposQuery, &ClientRect);
<BR> ClientToScreen(&ClientRect); <BR> // 获取屏幕的分辨率 <BR> int
nFullWidth=GetSystemMetrics(SM_CXSCREEN); <BR> int
nFullHeight=GetSystemMetrics(SM_CYSCREEN); <BR> //
将除控制条外的客户区全屏显示到从(0,0)到(nFullWidth, nFullHeight)区域,
将(0,0)和(nFullWidth, nFullHeight)两个点外扩充原窗口和除控制条之外的 客户区位置间的差值,
就得到全屏显示的窗口位置
<BR> m_FullScreenRect.left=WindowRect.left-ClientRect.left;
<BR> m_FullScreenRect.top=WindowRect.top-ClientRect.top;
<BR> m_FullScreenRect.right=WindowRect.right-ClientRect.right+nFullWidth;
<BR> m_FullScreenRect.bottom=WindowRect.bottom-ClientRect.bottom+nFullHeight;
<BR> m_bFullScreen=TRUE; // 设置全屏显示标志为 TRUE <BR> // 进入全屏显示状态
<BR> WINDOWPLACEMENT wndpl;
<BR> wndpl.length=sizeof(WINDOWPLACEMENT);
<BR> wndpl.flags=0; <BR> wndpl.showCmd=SW_SHOWNORMAL;
<BR> wndpl.rcNormalPosition=m_FullScreenRect;
<BR> SetWindowPlacement(&wndpl);}
<BR> 4)重载CMainFrame类的OnGetMinMaxInfo函数,在全屏显示时提供全屏显示的位置信息。
<BR> Void CMainFrame::OnGetMinMaxInfo(MINMAXINFO FAR* lpMMI)
<BR> {if(m_bFullScreen)
<BR> {lpMMI->ptMaxSize.x=m_FullScreenRect.Width();
<BR> lpMMI->ptMaxSize.y=m_FullScreenRect.Height();
<BR> lpMMI->ptMaxPosition.x=m_FullScreenRect.Width();
<BR> lpMMI->ptMaxPosition.y=m_FullScreenRect.Height();
<BR> // 最大的Track尺寸也要改变
<BR> lpMMI->ptMaxTrackSize.x=m_FullScreenRect.Width();
<BR> lpMMI->ptMaxTrackSize.y=m_FullScreenRect.Height();
<BR> }CFrameWnd::OnGetMinMaxInfo(lpMMI) ;
<BR> }完成上面的编程后,可以联编执行FullScreen.exe,选择菜单“ViewFull
Screen”或点击与之关联的工具栏按钮即可进入全屏显示状态。但现在还需要增加用户退出全屏显示状态的操作接口,下面讲述如何编程实现按“Esc”键退出全屏显示状态。
<BR> 1)在ClassView中选中CMainFrame并单击鼠标右键,选择“Add Member
Function…”,添加public类型的成员函数EndFullScreen,该函数将完成退出全屏显示的操作。
<BR> Void CMainFrame::EndFullScreen()
<BR> {if(m_bFullScreen) <BR> {// 退出全屏显示, 恢复原窗口显示
<BR> ShowWindow(SW_HIDE);
<BR> SetWindowPlacement(&m_OldWndPlace
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