Advanced MFC Programming

Chapter 6. Dialog Box
The tool bar contains four buttons, whose IDs are ID_BUTTON_YELLOW, ID_BUTTON_GREEN,
ID_BUTTON_RED and ID_BUTTON_BLUE, and they are painted with yellow, green, red and blue colors
respectively. Four string resources are also added to the application, they will be used to implement tool
tips and flybys:
Resource ID
String
ID_BUTTON_YELLOW This is yellow button\nYellow Button
ID_BUTTON_GREEN This is green button\nGreen Button
ID_BUTTON_RED This is red button\nRed Button
ID_BUTTON_BLUE This is blue button\nBlue Button
The sub-string before character ‘\n’ will be used to implement flyby, and the sub-string after that will
be used to implement tool tip. We will see that by letting the control and the string resource share a same
ID, it is easier for us to implement both flybys and tool tips.
New CToolBar and CStatusBar type variables are declared in class CDBDlg:
……
……
……
class CDBDlg : public CDialog
{
protected:
};
CStatusBar m_wndStatusBar;
CToolBar m_wndToolBar;
Status Bar
A status bar is divided into several panes, each pane displays a different type of information. We can
create as many panes as we like. When implementing a status bar, we must provide each pane with an ID.
We can use these IDs to access each individual pane, and output text or graphic objects. Usually these IDs
are stored in a global integer array. In the sample, the following array is declared for the status bar:
static UINT indicators[] =
{
AFX_IDS_IDLEMESSAGE,
IDS_MESSAGE
};
The status bar will have only two panes. Usually the first pane of the status bar is used to display
flybys (In the idle state, “Ready” will be displayed in it). One property of status bar is that if we implement
a string resource whose ID is the same with the ID of a pane contained in a status bar, the string will be
automatically displayed in it when the application is idle. So here we can add two string resources whose
IDs are AFX_IDS_IDLEMESSAGE and IDS_MESSAGE respectively. Since Developer Studio does not allow us to
add a string resource starting with “AFX_”, we may copy this string resource from any standard SDI
application (An SDI application has string resource AFX_IDS_IDLEMESSAGE if it is generated by Application
Wizard).
Adding Control Bars to Dialog Box
In function CDBDlg::OnInitDialog(), the following code is added for creating both tool bar and status
bar:
……
BOOL CDBDlg::OnInitDialog()
{
if
(
!m_wndToolBar.Create(this) ||
!m_wndToolBar.LoadToolBar(IDD)
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