MFC全屏显示和多窗口动态显示的一些技巧和方法
一、全屏
1、全屏窗口从dialogex继承,因为要处理一些东西
2、全屏代码,这样设置后尺寸不会出bug,只设置为最大值的话容易出bug
//get current system resolution
int g_iCurScreenWidth = GetSystemMetrics(SM_CXSCREEN);
int g_iCurScreenHeight = GetSystemMetrics(SM_CYSCREEN);
//for full screen while backplay
GetWindowPlacement(&_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);
return true;
3、全屏机制,创建全局的全屏类,也可以动态创建,竞争可以比较指针代替状态设置
4、ShowWindow(SW_SHOW);ShowWindow(SW_HIDE);进行显示关闭
5、全屏对按键消息的处理,包括win按键的处理
BOOL cloudfullscreen::PreTranslateMessage(MSG* pMsg)
{
if (pMsg->message == WM_KEYUP)
{
switch (pMsg->wParam)
{
case VK_ESCAPE:
resetOwner();
break;
case VK_LWIN:
resetOwner();
break;
case VK_RWIN:
resetOwner();
break;
defalut:
break;
}
}
return CDialogEx::PreTranslateMessage(pMsg);
}
6、dialog对话框的bug,重写
virtual void OnCancel();
virtual void OnOK();并注释掉原来的处理内容
不然esc和return按键会出bug
7、设置焦距:->SetFocus();
8、设置全屏实例化的对话框也需要创建才会执行initdialog函数
cloud_fullscreen_dialog_global.Create(IDD_CLOUD_FULLSCREEN);
可以用静态标志位判断是否第一次创建。
二、动态显示子窗口及子窗口中的多个控件
1、子窗口最好继承dialogex,这样才能处理消息和重载虚函数
2、控件可以静态画上去,或动态创建
3、思想:同一子窗口中的不同控件分层思想设置显示位置,(一般按相对比率来计算绝对位置,再画上去。若控件数目不定则用其它方法)
4、获取客户区大小
CRect clientRect;
::GetClientRect(this->m_hWnd, &clientRect); //取客户区大小
5、移动控件,改变大小
::MoveWindow(c._wnd, r.left, r.top, r.Width(), r.Height(), TRUE);
6、显示::ShowWindow(i.second->_wnd, SW_SHOW);
7、控件是否被点击判断
POINT CurPt;
CurPt.x = point.x;
CurPt.y = point.y;
CRect PntDspRect;
::GetWindowRect(_wnd, &PntDspRect);
CWnd::FromHandle(_wnd)->GetParent()->ScreenToClient(&PntDspRect);
if ((CurPt.x < PntDspRect.left) || (CurPt.x > PntDspRect.right)
|| (CurPt.y < PntDspRect.top) || (CurPt.y > PntDspRect.bottom))
{
return false;
}
CurPt.x = CurPt.x - PntDspRect.left;
CurPt.y = CurPt.y - PntDspRect.top;
if (CurPt.x < 0 || CurPt.y > PntDspRect.right || CurPt.y<0 || CurPt.y > PntDspRect.bottom)
return false;
return true;
注意:鼠标滚轮旋转(注意只是旋转,滚轮点击鼠标输入坐标和左右键输入坐标一样)输入坐标是屏幕坐标,应直接判断,不需要用父窗口判断
8、dialog对话框的bug,重写
virtual void OnCancel();
virtual void OnOK();并注释掉原来的处理内容
不然esc和return按键会出bug
9、设置焦距:->SetFocus();