MFC对话框全屏显示代码[亲测可用]

小灰灰 2022-08-21 10:00 144阅读 0赞

新建MFC对话框应用程序

在FullTestDlg.h : 头文件添加变量

**private:**

**BOOL bFullScreen;**

**WINDOWPLACEMENT m\_struOldWndpl;**

private:
    	BOOL bFullScreen;
    	WINDOWPLACEMENT m_struOldWndpl;

// FullTestDlg.cpp : 实现文件

**void CFullTestDlg::OnBnClickedButtonFull()**

**\{**

**//MessageBox(\_T("测试"));**

**int iShowStat = bFullScreen?SW\_HIDE:SW\_SHOW;**

**if (!bFullScreen)**

**\{**

**//get current system resolution**

**int g\_iCurScreenWidth = GetSystemMetrics(SM\_CXSCREEN);**

**int g\_iCurScreenHeight = GetSystemMetrics(SM\_CYSCREEN);**

**//for full screen while backplay**

**GetWindowPlacement(&m\_struOldWndpl);**

**CRect rectWholeDlg;//entire client(including title bar)**

**CRect rectClient;//client area(not including title bar)**

**CRect rectFullScreen;**

**GetWindowRect(&rectWholeDlg);**

**RepositionBars(0, 0xffff, AFX\_IDW\_PANE\_FIRST, reposQuery, &rectClient);**

**ClientToScreen(&rectClient);**

**rectFullScreen.left = rectWholeDlg.left-rectClient.left;**

**rectFullScreen.top = rectWholeDlg.top-rectClient.top;**

**rectFullScreen.right = rectWholeDlg.right+g\_iCurScreenWidth - rectClient.right;**

**rectFullScreen.bottom = rectWholeDlg.bottom+g\_iCurScreenHeight - rectClient.bottom;**

**//enter into full screen;**

**WINDOWPLACEMENT struWndpl;**

**struWndpl.length = sizeof(WINDOWPLACEMENT);**

**struWndpl.flags = 0;**

**struWndpl.showCmd = SW\_SHOWNORMAL;**

**struWndpl.rcNormalPosition = rectFullScreen;**

**SetWindowPlacement(&struWndpl);**

**bFullScreen=true;**

**\}**

void CFullTestDlg::OnBnClickedButtonFull()
    {
    	//MessageBox(_T("测试"));
    
    
    	int iShowStat = bFullScreen?SW_HIDE:SW_SHOW;
    
    	if (!bFullScreen)
    	{
    		//get current system resolution
    		int g_iCurScreenWidth = GetSystemMetrics(SM_CXSCREEN);
    		int g_iCurScreenHeight = GetSystemMetrics(SM_CYSCREEN);
    
    		//for full screen while backplay
    		GetWindowPlacement(&m_struOldWndpl);
    
    		CRect rectWholeDlg;//entire client(including title bar)
    		CRect rectClient;//client area(not including title bar)
    		CRect rectFullScreen;
    		GetWindowRect(&rectWholeDlg);
    		RepositionBars(0, 0xffff, AFX_IDW_PANE_FIRST, reposQuery, &rectClient);
    		ClientToScreen(&rectClient);
    
    		rectFullScreen.left = rectWholeDlg.left-rectClient.left;
    		rectFullScreen.top = rectWholeDlg.top-rectClient.top;
    		rectFullScreen.right = rectWholeDlg.right+g_iCurScreenWidth - rectClient.right;
    		rectFullScreen.bottom = rectWholeDlg.bottom+g_iCurScreenHeight - rectClient.bottom;
    		//enter into full screen;
    		WINDOWPLACEMENT struWndpl;
    		struWndpl.length = sizeof(WINDOWPLACEMENT);
    		struWndpl.flags = 0;
    		struWndpl.showCmd = SW_SHOWNORMAL;
    		struWndpl.rcNormalPosition = rectFullScreen;
    		SetWindowPlacement(&struWndpl);
    		
    		bFullScreen=true;
    	}
    
    }

增加右键消息处理函数，退出全屏模式

**void CFullTestDlg::OnRButtonDown(UINT nFlags, CPoint point)**

**\{**

**// TODO: 在此添加消息处理程序代码和/或调用默认值**

**if(bFullScreen)\{**

**SetWindowPlacement(&m\_struOldWndpl);**

**bFullScreen=false;**

**\}**

**CDialog::OnRButtonDown(nFlags, point);**

**\}**