1.工具条和状态条中控件的添加:
方法⑴.只能在ToolBar里创建控件:首先,在ToolBar中创建一个Button,其ID为ID_TOOL_COMBO(我们要将创建的控件放在该Button的位置上).
其次,新创建一个类CMainToolBar,要从CToolBar继续(创建过程大概如下:选择工程/增加到工程/新的类;也可以选择工程的根,然后点击右键,选择新的类;或者CTL W,选择增加类/新的类 --- 然后在class type里选择Generic Class,在Name栏里输入新类的名字,Base class里输入CToolBar),创建成功后在该类里创建要增加的控件的对象,如:
CComboBox m_wndMyCombo;
CStatic m_wndCategory, m_wndCategoryPath;
CButton m_wndOpenButton;
Cedit m_wndEdit;
然后在构造函数里初始化如:
m_wndMyCombo.m_hWnd = NULL;
m_wndCategory.m_hWnd = NULL;
m_wndCategoryPath.m_hWnd = NULL;
m_wndOpenButton.m_hWnd = NULL;
m_wndEdit.m_hWnd = NULL;
接着在CMainframe的头文件里创建CMainToolBar的一个对象m_wndToolBar,最后在.cpp文件的OnCreate函数的最后实现如下:
int index = 0;
CRect rect; // 可定义在头文件当中
// ComboBox
{
//找到指定的工具项
while(m_wndToolBar.GetItemID(index)!=ID_TOOL_COMBO)
index ;
//设置指定工具项的宽度并获取新的区域 120是宽度
m_wndToolBar.SetButtonInfo(index, ID_TOOL_COMBO, TBBS_SEPARATOR, 120);
m_wndToolBar.GetItemRect(index, &rect);
//设置位置
rect.top =1;
rect.bottom = 200;
// 创建并显示控件
if(!m_wndToolBar.m_wndMyCombo.Create(WS_CHILD|WS_VISIBLE| CBS_AUTOHSCROLL|
CBS_DROPDOWNLIST | CBS_HASSTRINGS , rect, &m_wndToolBar, ID_TOOL_COMBO))
{
TRACE0("Failed to create combo-box\n");
return FALSE;
}
m_wndToolBar.m_wndMyCombo.ShowWindow(SW_SHOW);
//填充内容
m_wndToolBar.m_wndMyCombo.AddString("25%");
m_wndToolBar.m_wndMyCombo.AddString("50%");
m_wndToolBar.m_wndMyCombo.AddString("75%");
//选择默认项
m_wndToolBar.m_wndMyCombo.SetCurSel(0);
//获取到内容并MSGBOX显示出来
CString strContent;
m_wndToolBar.m_wndMyCombo.GetWindowText(strContent);
index = 0;
}
其他控件都类似创建(只需要注重一下各自的Create函数的参数即可)。
方法⑵.这种方法创建不太轻易控制:直接在CMainframe的头文件中创建要增加的控件的对象,如CButton 的对象m_wndAboutButton,然后创建CToolBar或者CstatusBar的对象,如:CstatusBar的对象_wndStatusBar;再增加几个函数如下:
Protected:
virtual void RecalcLayout(BOOL bNotify = TRUE);
afx_msg void CMainFrame::OnViewStatusBar();
接着在.cpp文件中将StatusBar的ID和OnViewStatusBar 函数绑定在一起,如下所示:BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)
// {{AFX_MSG_MAP(CMainFrame)
ON_COMMAND(ID_VIEW_STATUS_BAR, OnViewStatusBar)
ON_WM_CREATE()
// }}AFX_MSG_MAP
END_MESSAGE_MAP()
然后Create函数的最后(返回值之前)实现如下代码:
CRect rc;
VERIFY(m_wndAboutButton.Create(_T("MyAbout"),
WS_VISIBLE,rc,this,ID_APP_ABOUT));
// TODO: Remove this if you don't want tool tips or a resizeable toolbar
m_wndToolBar.SetBarStyle(m_wndToolBar.GetBarStyle() |
CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC);
再在RecalcLayout函数里实现:
CRect rc;
if (m_wndStatusBar.m_hWnd)
{
m_wndStatusBar.GetWindowRect(&rc);
ScreenToClient(&rc);
rc.right -= 50;
m_wndStatusBar.SetWindowPos(NULL,rc.left,rc.top,rc.Width(),rc.Height(),
SWP_NOZORDER);
rc.left = rc.right;
rc.right = 50;
m_wndStatusBar.SetWindowPos(NULL,rc.left,rc.top,rc.Width(),rc.Height(),
SWP_NOZORDER);
}
最后在OnViewStatusBar()里实现:
BOOL bShow = m_wndStatusBar.GetStyle() & WS_VISIBLE;
m_wndAboutButton.SetWindowPos(NULL, 0, 0, 0, 0, SWP_NOZORDER|SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|
(bShow ? SWP_SHOWWINDOW : SWP_HIDEWINDOW));
ToolBar中的创建与此相同,只需更改一下句柄即可
2.使工具条上的按钮点击一次为按下,再点击才弹起
bCheck=m_RtfEditToolBar.GetToolBarCtrl().IsButtonChecked(ID_TB_BOLD);
m_RtfEditToolBar.GetToolBarCtrl().CheckButton(ID_TB_BOLD, !bCheck);
3.如何隐藏工具栏
添加如下两个函数
隐藏:
void CMainFrame::OnHide()
{
if(m_wndToolBar.IsWindowVisible())
m_wndToolBar.ModifyStyle(WS_VISIBLE,0);
SendMessage(WM_SIZE);
}
显示:
void CMainFrame::OnShow()
{
if(!m_wndToolBar.IsWindowVisible())
m_wndToolBar.ModifyStyle(0,WS_VISIBLE);
SendMessage(WM_SIZE);
}
4.如何动态获取工具条指针并给工具条加标题?
[问题提出]
工具条也是窗口,是窗口就有标题,如何给工具条加标题?
[程序实现]
不想动态改变工具条的标题就在CMainFrame::OnCreate()中:
int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
......
m_wndToolBar.SetWindowText(_T("Standdard"));
return 0;
}
若想动态改变工具条的标题,如下:
声明一个菜单,并响应事件,如响应:OnMyToolBar()函数
void CMainFrame::OnMyToolBar()
{
// TODO: Add your command handler code here
CToolBar *pToolBar = (CToolBar *)AfxGetMainWnd()->GetDescendantWindow(AFX_IDW_TOOLBAR);
pToolBar->SetWindowText (_T("Standdard"));
}
不要在TooBar悬浮时做OnMyToolBar()会出错的.
顺便提一下如何获得状态条的指针:
CStatusBar * pStatusBar =(CStatusBar *)AfxGetMainWnd()->GetDescendantWindow(AFX_IDW_STATUS_BAR);
5.在状态条中显示鼠标的设备坐标与逻辑坐标
显示器的设备坐标系的原点在客户区的左上角,x轴向右增长,y轴向下增长。我们要设置的逻辑坐标系的原点则在客户区的中心,x轴向右增长,y轴向上增长,如一个笛卡尔坐标系一般。
为CChildView添加一个成员函数void OnPrepareDC(CDC * pDC, CPrintInfo * pInfo = NULL);
void OnPrepareDC(CDC * pDC, CPrintInfo * pInfo){
CRect rect;
// 设置映射模式为LOMETRIC (0.1mm),右上为增长方向
pDC->SetMapMode (MM_LOMETRIC);
// 将坐标原点定在客户区的中心
GetClientRect(rect);
pDC->SetViewportOrg(rect.Width()/2, rect.Height()/2);
}
为CChildView响应鼠标移动消息,并在状态条中显示鼠标的坐标值。m_ptMouse数据成员是原打算做十字交叉线用的,在此使用没有实际意义。
void CChildView::OnMouseMove(UINT nFlags, CPoint point){
CClientDC dc(this);
CString str;
OnPrepareDC(&dc);
//要访问类CMainFrame,需要将mainfrm.h文件引入
CMainFrame * pFrame = (CMainFrame *) AfxGetApp()->m_pMainWnd;
//要访问CMainFrame的数据成员m_wndStatusBar,需要手工修改mainfrm.h,public这个数据成员
CStatusBar * pStatus = (CStatusBar *) &pFrame->m_wndStatusBar;
m_ptMouse = point;
str.Format ("设备坐标 X=%i pixel, Y=%i pixel", m_ptMouse.x, m_ptMouse.y);
pStatus->SetPaneText(1, str);
dc.DPtoLP(&m_ptMouse);
str.Format ("逻辑坐标 X=%i * 0.1mm, Y=%i * 0.1mm", m_ptMouse.x, m_ptMouse.y);
pStatus->SetPaneText(2, str);
}
6.如何更新状态条上的现实内容
By default, a CStatusBar pane is not enabled when the pane is created. To activate a pane, you must call the ON_UPDATE_COMMAND_UI() macro for each pane on the status bar and update the panes. Because panes do not send WM_COMMAND messages, you cannot use ClassWizard to activate panes; you must type the code manually. For example, suppose one pane has ID_INDICATOR_PAGE as its identifier and that it contains the current page number in a document. To make the ID_INDICATOR_PAGE pane display text, add the following to a header file (probably the MAINFRM.H file):
afx_msg void OnUpdatePage(CCmdUI *pCmdUI);
Add the following to the application message map:
ON_UPDATE_COMMAND_UI(ID_INDICATOR_PAGE, OnUpdatePage)
Add the following to a source code file (probably MAINFRM.CPP):
void CMainFrame::OnUpdatePage(CCmdUI *pCmdUI)
{
pCmdUI->Enable();
}
To display text in the panes, either call SetPaneText() or call CCmdUI::SetText() in the OnUpdate() function. For example, you might want to set up an integer variable m_nPage that contains the current page number. Then, the OnUpdatePage() function might read as follows:
void CMainFrame::OnUpdatePage(CCmdUI *pCmdUI)
{
pCmdUI->Enable();
char szPage[16];
wsprintf((LPSTR)szPage, "Page %d", m_nPage);
pCmdUI->SetText((LPSTR)szPage);
}
This technique causes the page number to appear in the pane during idle processing in the same manner that the application updates other indicators.