提供自己写的一个类,用MFC可以方便设置窗口全屏显示 - Gods_巨蚁
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凌晨1:35,本人刚开通本博,感觉至少留下篇原创技术文章吧,在兄弟这,还不急着睡。
我原来的博客地址为 http://hi.baidu.com/zhongji
此博客会继续使用,但更多的技术文章将发布于博客园。
进入正题
最近学习DX,结合着MFC来使用,发现无法使用DX直接在创建设备的时候设置全屏
我尝试设置 D3DPRESENT_PARAMETERS中的Windowed参数,却发现之后的调用CreateDevice出错
所以未找到解决之道,在网上搜索了一些技术文章,直接用MFC设置全屏,说白了就是把窗口的位置设置为足够包含整个屏幕,依据自己的详细实现,完成了如下的类
头文件 ATMfcFullScreen.h
1 #pragma once
2
3 #include <assert.h>
4
5 class ATMfcFullScreen
6 {
7 public:
8 ATMfcFullScreen();
9
10 void SetFrameView(CWnd* pFrame, CWnd* pView);
11 bool IsReady();
12
13 void FullScreen();
14 void Restore();
15 bool IsFullScreen();
16 CSize GetFullScreenSize();
17
18 private:
19 CRect FullScreenRect(CRect &rcFrame, CRect &rcView, CRect &rcScreen);
20 CRect FullScreenRect(CWnd* pFrame, CWnd* pView);
21
22 void SetFrameViewPos(CRect rectPos);
23
24 private:
25 CRect m_rectRestore;
26 CWnd* m_pFrame;
27 CWnd* m_pView;
28 bool m_bFullScreen;
29 };
实现文件 ATMfcFullScreen.cpp
1 #include "stdafx.h"
2
3 #include "ATMfcFullScreen.h"
4
5
6 ATMfcFullScreen::ATMfcFullScreen():m_rectRestore(0,0,0,0)
7 {
8 m_pFrame = NULL;
9 m_pView = NULL;
10 m_bFullScreen = false;
11 }
12
13 void ATMfcFullScreen::SetFrameView(CWnd* pFrame, CWnd* pView)
14 {
15 assert(pFrame != NULL && pView != NULL);
16 m_pFrame = pFrame;
17 m_pView = pView;
18 }
19
20 bool ATMfcFullScreen::IsReady()
21 {
22 return (m_pFrame != NULL && m_pView != NULL);
23 }
24
25 void ATMfcFullScreen::FullScreen()
26 {
27 if (!m_bFullScreen)
28 {
29 m_bFullScreen = true;
30 m_pFrame->GetWindowRect(m_rectRestore);
31 SetFrameViewPos(FullScreenRect(m_pFrame, m_pView));
32 }
33 }
34
35 void ATMfcFullScreen::Restore()
36 {
37 if (m_bFullScreen)
38 {
39 m_bFullScreen = false;
40 SetFrameViewPos(m_rectRestore);
41 }
42 }
43
44 bool ATMfcFullScreen::IsFullScreen()
45 {
46 return m_bFullScreen;
47 }
48
49 CSize ATMfcFullScreen::GetFullScreenSize()
50 {
51 CRect rectFullScreen = FullScreenRect(m_pFrame, m_pView);
52 return rectFullScreen.Size();
53 }
54
55 CRect ATMfcFullScreen::FullScreenRect(CRect &rcFrame, CRect &rcView, CRect &rcScreen)
56 {
57 CRect rcMax;
58 rcMax.left = rcScreen.left + rcFrame.left - rcView.left;
59 rcMax.top = rcScreen.top + rcFrame.top - rcView.top;
60 rcMax.right = rcScreen.right + rcFrame.right - rcView.right;
61 rcMax.bottom = rcScreen.bottom + rcFrame.bottom - rcView.bottom;
62 return rcMax;
63 }
64
65 CRect ATMfcFullScreen::FullScreenRect(CWnd* pFrame, CWnd* pView)
66 {
67 assert(pFrame != NULL && pView != NULL);
68
69 CRect rectScreen(0, 0, GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN));
70 CRect rectFrame, rectView;
71 pFrame->GetWindowRect(rectFrame);
72 pView->GetClientRect(rectView);
73 pView->ClientToScreen(rectView);
74
75 return FullScreenRect(rectFrame, rectView, rectScreen);
76 }
77
78 void ATMfcFullScreen::SetFrameViewPos(CRect rectPos)
79 {
80 //m_pFrame->SetWindowPos(NULL, rectPos.left, rectPos.top, rectPos.right, rectPos.bottom,
81 // SWP_NOZORDER);
82
83 m_pFrame->MoveWindow(rectPos);
84 if (m_bFullScreen)
85 {
86 m_pFrame->SetWindowPos(&CWnd::wndTopMost, rectPos.left, rectPos.top,
87 0, 0, SWP_NOSIZE);
88 }
89 else
90 {
91 m_pFrame->SetWindowPos(&CWnd::wndNoTopMost, rectPos.left, rectPos.top,
92 0, 0, SWP_NOSIZE);
93 }
94 }
下面为使用方式
我之前写的个小程序是用来练习使用DX的,所以没有使用MFC的DOC/VIEW结构,我这里仅仅使用了MFC的单文档形式
具体实现方式
在CMainFrame中包含上面的头文件后,添加
private: //By 巨蚁 ATMfcFullScreen m_fullscreen;
在CMainFrame::OnCreate中添加
//初始化m_fullscreen m_fullscreen.SetFrameView(this, &m_wndView);
在CMainFram中添加WM_GETMINMAXINFO消息处理函数,函数实现如下所示,之所以添加一个检测m_fullscreen.IsReady(),原因在于此消息会先于WM_CREATE消息发出,而此时,我们在OnCreate中的m_fullscreen的初始化还没有进行。
void CMainFrame::OnGetMinMaxInfo(MINMAXINFO* lpMMI) { if (m_fullscreen.IsReady()) { CPoint point(m_fullscreen.GetFullScreenSize()); lpMMI->ptMaxSize = point; lpMMI->ptMaxTrackSize = point; } else { CFrameWnd::OnGetMinMaxInfo(lpMMI); } }
基本设置已经完成,下面就是设置全屏 和 还原 的命令了
为了方便测试,我定义了一个快捷键,当按下空格,产生 ID_AT_FULLSCREEN消息
我在CMainFrame中添加了消息处理函数,如下
void CMainFrame::OnAtFullscreen() { if (m_fullscreen.IsFullScreen()) { m_fullscreen.Restore(); } else { m_fullscreen.FullScreen(); } }
编译完成,现在可以使用空格键来实现这个MFC程序从全屏与原大小之间的切换了
好,完成了,我就先飘过了~
作者:Gods_巨蚁 QQ:517377100
出处:http://www.cnblogs.com/gods/
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