命令条设计指导
因为命令条是Windows CE应用程序中的一个主要元素，所以微软对如何使用它们给出了一个相当强的规则集合。这些规则中有许多规则同其它版本的Windows是类似的，例如对主菜单项的顺序的建议和对工具条提示的使用等。大部分规则已经成为Windows程序员的第二天性了。
菜单应该是命令条上最左边的项。主菜单项按从左到右的顺序依次为：文件（File）、视图（View）、插入（Insert）、格式（Format）、工具（Tools）和窗口（Windows）。当然，大部分应用都具有这些菜单项，这些菜单项的顺序应该遵循建议的顺序。对按钮来说，按从左到右的顺序是：用于文件操作的有新建(New)、打开(Open)、保存(Save)和打印(Print)；，用于字体风格的是粗体、斜体和下划线。
CmdBar示例程序
CmdBar示例演示了命令条的基本操作。在启动的时候，创建了一个只有菜单和关闭按钮的工具条。从[视图（view）]菜单里选择不同的项来创建不同的命令条，由此展示了命令条控件的性能。源代码如清单5-1所示。
清单5-1：CmdBar 程序
CmdBar.rc
//======================================================================
// Resource file
//
// Written for the book Programming Windows CE
// Copyright (C) 2003 Douglas Boling
//======================================================================
#include "windows.h"
#include "CmdBar.h" // Program-specific stuff
//----------------------------------------------------------------------
// Icons and bitmaps
//
ID_ICON ICON "cmdbar.ico" // Program icon
DisCross BITMAP "cross.bmp" // Disabled button image
DisMask BITMAP "mask.bmp" // Disabled button image mask
SortDropBtn BITMAP "sortdrop.bmp" // Sort drop-down button image
//----------------------------------------------------------------------
// Menu
//
ID_MENU MENU DISCARDABLE
BEGIN
POPUP "&File"
BEGIN
MENUITEM "E&xit", IDM_EXIT
END
POPUP "&View"
BEGIN
MENUITEM "&Standard", IDM_STDBAR
MENUITEM "&View", IDM_VIEWBAR
MENUITEM "&Combination", IDM_COMBOBAR
END
POPUP "&Help"
BEGIN
MENUITEM "&About...", IDM_ABOUT
END
END
popmenu MENU DISCARDABLE
BEGIN
POPUP "&Sort"
BEGIN
MENUITEM "&Name", IDC_SNAME
MENUITEM "&Type", IDC_STYPE
MENUITEM "&Size", IDC_SSIZE
MENUITEM "&Date", IDC_SDATE
END
END
//----------------------------------------------------------------------
// About box dialog template
//
aboutbox DIALOG discardable 10, 10, 160, 45
STYLE WS_POPUP | WS_VISIBLE | WS_CAPTION | WS_SYSMENU |
DS_CENTER | DS_MODALFRAME
CAPTION "About"
BEGIN
ICON ID_ICON, -1, 5, 5, 10, 10
LTEXT "CmdBar - Written for the book Programming Windows CE Copyright 2003 Douglas Boling"
-1, 40, 5, 110, 35
END
CmdBar.h
//======================================================================
// Header file
//
// Written for the book Programming Windows CE
// Copyright (C) 2003 Douglas Boling
//======================================================================
// Returns number of elements
#define dim(x) (sizeof(x) / sizeof(x[0]))
//----------------------------------------------------------------------
// Generic defines and data types
//
struct decodeUINT { // Structure associates
UINT Code; // messages
// with a function.
LRESULT (*Fxn)(HWND, UINT, WPARAM, LPARAM);
};
struct decodeCMD { // Structure associates
UINT Code; // menu IDs with a
LRESULT (*Fxn)(HWND, WORD, HWND, WORD); // function.
};
//----------------------------------------------------------------------
// Generic defines used by application
#define IDC_CMDBAR 1 // Command band ID
#define ID_ICON 10 // Icon resource ID
#define ID_MENU 11 // Main menu resource ID
#define IDC_COMBO 12 // Combo box on cmd bar ID
// Menu item IDs
#define IDM_EXIT 101 // File menu
#define IDM_STDBAR 111 // View menu
#define IDM_VIEWBAR 112
#define IDM_COMBOBAR 113
#define IDM_ABOUT 120 // Help menu
// Command bar button IDs
#define IDC_NEW 201
#define IDC_OPEN 202
#define IDC_SAVE 203
#define IDC_CUT 204
#define IDC_COPY 205
#define IDC_PASTE 206
#define IDC_PROP 207
#define IDC_LICON 301
#define IDC_SICON 302
#define IDC_LIST 303
#define IDC_RPT 304
#define IDC_SNAME 305
#define IDC_STYPE 306
#define IDC_SSIZE 307
#define IDC_SDATE 308
#define IDC_DPSORT 350
#define STD_BMPS (STD_PRINT+1) // Number of bmps in
// std imglist
#define VIEW_BMPS (VIEW_NEWFOLDER+1) // Number of bmps in
// view imglist
//----------------------------------------------------------------------
// Function prototypes
//
HWND InitInstance (HINSTANCE, LPWSTR, int);
int TermInstance (HINSTANCE, int);
// Window procedures
LRESULT CALLBACK MainWndProc (HWND, UINT, WPARAM, LPARAM);
// Message handlers
LRESULT DoCreateMain (HWND, UINT, WPARAM, LPARAM);
LRESULT DoSizeMain (HWND, UINT, WPARAM, LPARAM);
LRESULT DoCommandMain (HWND, UINT, WPARAM, LPARAM);
LRESULT DoNotifyMain (HWND, UINT, WPARAM, LPARAM);
LRESULT DoDestroyMain (HWND, UINT, WPARAM, LPARAM);
// Command functions
LPARAM DoMainCommandExit (HWND, WORD, HWND, WORD);
LPARAM DoMainCommandVStd (HWND, WORD, HWND, WORD);
LPARAM DoMainCommandVView (HWND, WORD, HWND, WORD);
LPARAM DoMainCommandVCombo (HWND, WORD, HWND, WORD);
LPARAM DoMainCommandAbout (HWND, WORD, HWND, WORD);
// Dialog procedures
BOOL CALLBACK AboutDlgProc (HWND, UINT, WPARAM, LPARAM);
CmdBar.cpp
//======================================================================
// CmdBar - Command bar demonstration
//
// Written for the book Programming Windows CE
// Copyright (C) 2003 Douglas Boling
//======================================================================
#include <windows.h> // For all that Windows stuff
#include <commctrl.h> // Command bar includes
#include "CmdBar.h" // Program-specific stuff
//----------------------------------------------------------------------
// Global data
//
const TCHAR szAppName[] = TEXT ("CmdBar");
HINSTANCE hInst; // Program instance handle
// Message dispatch table for MainWindowProc
const struct decodeUINT MainMessages[] = {
WM_CREATE, DoCreateMain,
WM_SIZE, DoSizeMain,
WM_COMMAND, DoCommandMain,
WM_NOTIFY, DoNotifyMain,
WM_DESTROY, DoDestroyMain,
};
// Command Message dispatch for MainWindowProc
const struct decodeCMD MainCommandItems[] = {
IDM_EXIT, DoMainCommandExit,
IDM_STDBAR, DoMainCommandVStd,
IDM_VIEWBAR, DoMainCommandVView,
IDM_COMBOBAR, DoMainCommandVCombo,
IDM_ABOUT, DoMainCommandAbout,
};
// Standard file bar button structure
const TBBUTTON tbCBStdBtns[] = {
// BitmapIndex Command State Style UserData String
{0, 0, 0, TBSTYLE_SEP, 0, 0},
{STD_FILENEW, IDC_NEW, TBSTATE_ENABLED,
TBSTYLE_BUTTON, 0, 0},
{STD_FILEOPEN, IDC_OPEN, TBSTATE_ENABLED,
TBSTYLE_BUTTON, 0, 0},
{STD_FILESAVE, IDC_SAVE, TBSTATE_ENABLED,
TBSTYLE_BUTTON, 0, 0},
{0, 0, 0, TBSTYLE_SEP, 0, 0},
{STD_CUT, IDC_CUT, TBSTATE_ENABLED,
TBSTYLE_BUTTON, 0, 0},
{STD_COPY, IDC_COPY, TBSTATE_ENABLED,
TBSTYLE_BUTTON, 0, 0},
{STD_PASTE, IDC_PASTE, TBSTATE_ENABLED,
TBSTYLE_BUTTON, 0, 0},
{0, 0, 0, TBSTYLE_SEP, 0, 0},
{STD_PROPERTIES, IDC_PROP, TBSTATE_ENABLED,
TBSTYLE_BUTTON, 0, 0}
};
// Standard view bar button structure
const TBBUTTON tbCBViewBtns[] = {
// BitmapIndex Command State Style UserData String
{0, 0, 0, TBSTYLE_SEP, 0, 0},
{VIEW_LARGEICONS, IDC_LICON, TBSTATE_ENABLED | TBSTATE_CHECKED,
TBSTYLE_CHECKGROUP, 0, 0},
{VIEW_SMALLICONS, IDC_SICON, TBSTATE_ENABLED,
TBSTYLE_CHECKGROUP, 0, 0},
{VIEW_LIST, IDC_LIST, 0, TBSTYLE_CHECKGROUP, 0, 0},
{VIEW_DETAILS, IDC_RPT, TBSTATE_ENABLED,
TBSTYLE_CHECKGROUP, 0, 0},
{0, 0, TBSTATE_ENABLED,
TBSTYLE_SEP, 0, 0},
{VIEW_SORTNAME, IDC_SNAME, TBSTATE_ENABLED | TBSTATE_CHECKED,
TBSTYLE_CHECKGROUP, 0, 0},
{VIEW_SORTTYPE, IDC_STYPE, TBSTATE_ENABLED,
TBSTYLE_CHECKGROUP, 0, 0},
{VIEW_SORTSIZE, IDC_SSIZE, TBSTATE_ENABLED,
TBSTYLE_CHECKGROUP, 0, 0},
{VIEW_SORTDATE, IDC_SDATE, TBSTATE_ENABLED,
TBSTYLE_CHECKGROUP, 0, 0},
{0, 0, 0, TBSTYLE_SEP, 0, 0},
};
// Tooltip string list for view bar
const TCHAR *pViewTips[] = {TEXT (""), TEXT ("Large"), TEXT ("Small"),
TEXT ("List"), TEXT ("Details"), TEXT (""),
TEXT ("Sort by Name"), TEXT ("Sort by Type"),
TEXT ("Sort by Size"), TEXT ("Sort by Date"),
};
// Combination standard and view bar button structure
const TBBUTTON tbCBCmboBtns[] = {
// BitmapIndex Command State Style UserData String
{0, 0, 0, TBSTYLE_SEP, 0, 0},
{STD_FILENEW, IDC_NEW, TBSTATE_ENABLED,
TBSTYLE_BUTTON, 0, 0},
{STD_FILEOPEN, IDC_OPEN, TBSTATE_ENABLED,
TBSTYLE_BUTTON, 0, 0},
{STD_PROPERTIES, IDC_PROP, TBSTATE_ENABLED,
TBSTYLE_BUTTON, 0, 0},
{0, 0, 0, TBSTYLE_SEP, 0, 0},
{STD_CUT, IDC_CUT, TBSTATE_ENABLED,
TBSTYLE_BUTTON, 0, 0},
{STD_COPY, IDC_COPY, TBSTATE_ENABLED,
TBSTYLE_BUTTON, 0, 0},
{STD_PASTE, IDC_PASTE, TBSTATE_ENABLED,
TBSTYLE_BUTTON, 0, 0},
{0, 0, 0, TBSTYLE_SEP, 0, 0},
{STD_BMPS + VIEW_LARGEICONS,
IDC_LICON, TBSTATE_ENABLED | TBSTATE_CHECKED,
TBSTYLE_CHECKGROUP, 0, 0},
{STD_BMPS + VIEW_SMALLICONS,
IDC_SICON, TBSTATE_ENABLED,
TBSTYLE_CHECKGROUP, 0, 0},
{STD_BMPS + VIEW_LIST,
IDC_LIST, TBSTATE_ENABLED,
TBSTYLE_CHECKGROUP, 0, 0},
{STD_BMPS + VIEW_DETAILS,
IDC_RPT, TBSTATE_ENABLED,
TBSTYLE_CHECKGROUP, 0, 0},
{0, 0, 0, TBSTYLE_SEP, 0, 0},
{STD_BMPS + VIEW_BMPS,
IDC_DPSORT,TBSTATE_ENABLED,
TBSTYLE_DROPDOWN, 0, 0}
};
//======================================================================
// Program entry point
//
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPWSTR lpCmdLine, int nCmdShow) {
HWND hwndMain;
MSG msg;
int rc = 0;
// Initialize application.
hwndMain = InitInstance (hInstance, lpCmdLine, nCmdShow);
if (hwndMain == 0) return 0x10;
// Application message loop
while (GetMessage (&msg, NULL, 0, 0)) {
TranslateMessage (&msg);
DispatchMessage (&msg);
}
// Instance cleanup
return TermInstance (hInstance, msg.wParam);
}
//----------------------------------------------------------------------
// InitInstance - Instance initialization
//
HWND InitInstance (HINSTANCE hInstance, LPWSTR lpCmdLine, int nCmdShow){
HWND hWnd;
DWORD dwStyle = WS_VISIBLE;
int x = CW_USEDEFAULT, y = CW_USEDEFAULT;
int cx = CW_USEDEFAULT, cy = CW_USEDEFAULT;
WNDCLASS wc;
INITCOMMONCONTROLSEX icex;
#if defined(WIN32_PLATFORM_PSPC)
// If Pocket PC, allow only one instance of the application.
hWnd = FindWindow (szAppName, NULL);
if (hWnd) {
SetForegroundWindow ((HWND)(((DWORD)hWnd) | 0x01));
return 0;
}
#endif
// Register application main window class.
wc.style = 0; // Window style
wc.lpfnWndProc = MainWndProc; // Callback function
wc.cbClsExtra = 0; // Extra class data
wc.cbWndExtra = 0; // Extra window data
wc.hInstance = hInstance; // Owner handle
wc.hIcon = NULL, // Application icon
wc.hCursor = LoadCursor (NULL, IDC_ARROW);// Default cursor
wc.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH);
wc.lpszMenuName = NULL; // Menu name
wc.lpszClassName = szAppName; // Window class name
if (RegisterClass (&wc) == 0) return 0;
// Load the command bar common control class.
icex.dwSize = sizeof (INITCOMMONCONTROLSEX);
icex.dwICC = ICC_BAR_CLASSES;
InitCommonControlsEx (&icex);
#ifndef WIN32_PLATFORM_PSPC
dwStyle |= WS_CAPTION | WS_SIZEBOX | WS_MAXIMIZEBOX | WS_MINIMIZEBOX;
x = y = 10;
cx = GetSystemMetrics (SM_CXSCREEN) - 30;
cy = GetSystemMetrics (SM_CYSCREEN) - 50
#endif
// Save program instance handle in global variable.
hInst = hInstance;
// Create main window.
hWnd = CreateWindow (szAppName, TEXT ("CmdBar Demo"), dwStyle,
x, y, cx, cy, NULL, NULL, hInstance, NULL);
// Return fail code if window not created.
if (!IsWindow (hWnd)) return 0;
// Standard show and update calls
ShowWindow (hWnd, nCmdShow);
UpdateWindow (hWnd);
return hWnd;
}
//----------------------------------------------------------------------
// TermInstance - Program cleanup
//
int TermInstance (HINSTANCE hInstance, int nDefRC) {
return nDefRC;
}
//======================================================================
// Message handling procedures for MainWindow
//----------------------------------------------------------------------
// MainWndProc - Callback function for application window
//
LRESULT CALLBACK MainWndProc (HWND hWnd, UINT wMsg, WPARAM wParam,
LPARAM lParam) {
int i;
//
// Search message list to see if we need to handle this
// message. If in list, call procedure.
//
for (i = 0; i < dim(MainMessages); i++) {
if (wMsg == MainMessages[i].Code)
return (*MainMessages[i].Fxn)(hWnd, wMsg, wParam, lParam);
}
return DefWindowProc (hWnd, wMsg, wParam, lParam);
}
//----------------------------------------------------------------------
// DoCreateMain - Process WM_CREATE message for window.
//
LRESULT DoCreateMain (HWND hWnd, UINT wMsg, WPARAM wParam,
LPARAM lParam) {
HWND hwndCB;
// Create a minimal command bar that has only a menu and an
// exit button.
hwndCB = CommandBar_Create (hInst, hWnd, IDC_CMDBAR);
// Insert the menu.
CommandBar_InsertMenubar (hwndCB, hInst, ID_MENU, 0);
// Add exit button to command bar.
CommandBar_AddAdornments (hwndCB, 0, 0);
return 0;
}
//----------------------------------------------------------------------
// DoSizeMain - Process WM_SIZE message for window.
//
LRESULT DoSizeMain (HWND hWnd, UINT wMsg, WPARAM wParam,
LPARAM lParam) {
#ifndef WIN32_PLATFORM_PSPC
HWND hwndCB = GetDlgItem (hWnd, IDC_CMDBAR);
// Tell the command bar to resize itself and reposition Close button.
SendMessage(hwndCB, TB_AUTOSIZE, 0L, 0L);
CommandBar_AlignAdornments(hwndCB);
#endif //WIN32_PLATFORM_PSPC
return 0;
}
//----------------------------------------------------------------------
// DoCommandMain - Process WM_COMMAND message for window.
//
LRESULT DoCommandMain (HWND hWnd, UINT wMsg, WPARAM wParam,
LPARAM lParam) {
WORD idItem, wNotifyCode;
HWND hwndCtl;
INT i;
// Parse the parameters.
idItem = (WORD) LOWORD (wParam);
wNotifyCode = (WORD) HIWORD (wParam);
hwndCtl = (HWND) lParam;
// Call routine to handle control message.
for (i = 0; i < dim(MainCommandItems); i++) {
if (idItem == MainCommandItems[i].Code)
return (*MainCommandItems[i].Fxn)(hWnd, idItem, hwndCtl,
wNotifyCode);
}
return 0;
}
//----------------------------------------------------------------------
// DoNotifyMain - Process WM_NOTIFY message for window.
//
LRESULT DoNotifyMain (HWND hWnd, UINT wMsg, WPARAM wParam,
LPARAM lParam) {
LPNMHDR pNotifyHeader;
LPNMTOOLBAR pNotifyToolBar;
RECT rect;
TPMPARAMS tpm;
HMENU hMenu;
// Get pointer to notify message header.
pNotifyHeader = (LPNMHDR)lParam;
if (pNotifyHeader->code == TBN_DROPDOWN) {
// Get pointer to toolbar notify structure.
pNotifyToolBar = (LPNMTOOLBAR)lParam;
if (pNotifyToolBar->iItem == IDC_DPSORT) {
// Get the rectangle of the drop-down button.
SendMessage (pNotifyHeader->hwndFrom, TB_GETRECT,
pNotifyToolBar->iItem, (LPARAM)&rect);
// Convert rect to screen coordinates. The rect is
// considered here to be an array of 2 POINT structures.
MapWindowPoints (pNotifyHeader->hwndFrom, HWND_DESKTOP,
(LPPOINT)&rect, 2);
// Prevent the menu from covering the button.
tpm.cbSize = sizeof (tpm);
CopyRect (&tpm.rcExclude, &rect);
hMenu = GetSubMenu (LoadMenu (hInst, TEXT ("popmenu")),0);
TrackPopupMenuEx (hMenu, TPM_LEFTALIGN | TPM_VERTICAL,
rect.left, rect.bottom, hWnd, &tpm);
}
}
return 0;
}
//----------------------------------------------------------------------
// DoDestroyMain - Process WM_DESTROY message for window.
//
LRESULT DoDestroyMain (HWND hWnd, UINT wMsg, WPARAM wParam,
LPARAM lParam) {
PostQuitMessage (0);
return 0;
}
//======================================================================
// Command handler routines
//----------------------------------------------------------------------
// DoMainCommandExit - Process Program Exit command.
//
LPARAM DoMainCommandExit (HWND hWnd, WORD idItem, HWND hwndCtl,
WORD wNotifyCode) {
SendMessage (hWnd, WM_CLOSE, 0, 0);
return 0;
}
//----------------------------------------------------------------------
// DoMainCommandViewStd - Displays a standard edit-centric command bar
//
LPARAM DoMainCommandVStd (HWND hWnd, WORD idItem, HWND hwndCtl,
WORD wNotifyCode) {
HWND hwndCB;
// If a command bar exists, kill it.
if (hwndCB = GetDlgItem (hWnd, IDC_CMDBAR))
CommandBar_Destroy (hwndCB);
// Create a command bar.
hwndCB = CommandBar_Create (hInst, hWnd, IDC_CMDBAR);
// Insert a menu.
CommandBar_InsertMenubar (hwndCB, hInst, ID_MENU, 0);
// Insert buttons.
CommandBar_AddBitmap (hwndCB, HINST_COMMCTRL, IDB_STD_SMALL_COLOR,
STD_BMPS, 0, 0);
CommandBar_AddButtons (hwndCB, dim(tbCBStdBtns), tbCBStdBtns);
// Add exit button to command bar.
CommandBar_AddAdornments (hwndCB, 0, 0);
return 0;
}
//----------------------------------------------------------------------
// DoMainCommandVView - Displays a standard edit-centric command bar
//
LPARAM DoMainCommandVView (HWND hWnd, WORD idItem, HWND hwndCtl,
WORD wNotifyCode) {
INT i;
HWND hwndCB;
TCHAR szTmp[64];
HBITMAP hBmp, hMask;
HIMAGELIST hilDisabled, hilEnabled;
// If a command bar exists, kill it.
if (hwndCB = GetDlgItem (hWnd, IDC_CMDBAR))
CommandBar_Destroy (hwndCB);
// Create a command bar.
hwndCB = CommandBar_Create (hInst, hWnd, IDC_CMDBAR);
// Insert a menu.
CommandBar_InsertMenubar (hwndCB, hInst, ID_MENU, 0);
// Insert buttons, first add a bitmap and then the buttons.
CommandBar_AddBitmap (hwndCB, HINST_COMMCTRL, IDB_VIEW_SMALL_COLOR,
VIEW_BMPS, 0, 0);
// Load bitmaps for disabled image.
hBmp = LoadBitmap (hInst, TEXT ("DisCross"));
hMask = LoadBitmap (hInst, TEXT ("DisMask"));
// Get the current image list and copy.
hilEnabled = (HIMAGELIST)SendMessage (hwndCB, TB_GETIMAGELIST, 0, 0);
hilDisabled = ImageList_Duplicate (hilEnabled);
// Replace a button image with the disabled image.
ImageList_Replace (hilDisabled, VIEW_LIST, hBmp, hMask);
// Set disabled image list.
SendMessage (hwndCB, TB_SETDISABLEDIMAGELIST, 0,
(LPARAM)hilDisabled);
// Add buttons to the command bar.
CommandBar_AddButtons (hwndCB, dim(tbCBViewBtns), tbCBViewBtns);
// Add tooltips to the command bar.
CommandBar_AddToolTips (hwndCB, dim(pViewTips), pViewTips);
// Add a combo box between the view icons and the sort icons.
CommandBar_InsertComboBox (hwndCB, hInst, 75,
CBS_DROPDOWNLIST | WS_VSCROLL,
IDC_COMBO, 6);
// Fill in combo box.
for (i = 0; i < 10; i++) {
wsprintf (szTmp, TEXT ("Item %d"), i);
SendDlgItemMessage (hwndCB, IDC_COMBO, CB_INSERTSTRING, -1,
(LPARAM)szTmp);
}
SendDlgItemMessage (hwndCB, IDC_COMBO, CB_SETCURSEL, 0, 0);
// Add exit button to command bar.
CommandBar_AddAdornments (hwndCB, 0, 0);
return 0;
}
//----------------------------------------------------------------------
// DoMainCommandVCombo - Displays a combination of file and edit buttons
//
LPARAM DoMainCommandVCombo (HWND hWnd, WORD idItem, HWND hwndCtl,
WORD wNotifyCode) {
HWND hwndCB;
// If a command bar exists, kill it.
if (hwndCB = GetDlgItem (hWnd, IDC_CMDBAR))
CommandBar_Destroy (hwndCB);
// Create a command bar.
hwndCB = CommandBar_Create (hInst, hWnd, IDC_CMDBAR);
// Insert a menu.
CommandBar_InsertMenubar (hwndCB, hInst, ID_MENU, 0);
// Add two bitmap lists plus custom bmp for drop-down button.
CommandBar_AddBitmap (hwndCB, HINST_COMMCTRL, IDB_STD_SMALL_COLOR,
STD_BMPS, 0, 0);
CommandBar_AddBitmap (hwndCB, HINST_COMMCTRL, IDB_VIEW_SMALL_COLOR,
VIEW_BMPS, 0, 0);
CommandBar_AddBitmap (hwndCB, NULL,
(int)LoadBitmap (hInst, TEXT ("SortDropBtn")),
1, 0, 0);
CommandBar_AddButtons (hwndCB, dim(tbCBCmboBtns), tbCBCmboBtns);
// Add exit button to command bar.
CommandBar_AddAdornments (hwndCB, 0, 0);
return 0;
}
//----------------------------------------------------------------------
// DoMainCommandAbout - Process the Help | About menu command.
//
LPARAM DoMainCommandAbout(HWND hWnd, WORD idItem, HWND hwndCtl,
WORD wNotifyCode) {
// Use DialogBox to create modal dialog box.
DialogBox (hInst, TEXT ("aboutbox"), hWnd, AboutDlgProc);
return 0;
}
//======================================================================
// About Dialog procedure
//
BOOL CALLBACK AboutDlgProc (HWND hWnd, UINT wMsg, WPARAM wParam,
LPARAM lParam) {
switch (wMsg) {
case WM_COMMAND:
switch (LOWORD (wParam)) {
case IDOK:
case IDCANCEL:
EndDialog (hWnd, 0);
return TRUE;
}
break;
}
return FALSE;
}
CmdBar所创建的每个命令条都演示了命令条控件的不同能力。在例程DoMainCommandVStd中创建了第一个命令条，带有一个菜单和一组按钮。按钮结构的定义位于CmdBar.cpp文件顶部位置的tbCBStdBtns数组里。
在例程DoMainCommandVView中创建了第二个命令条，包含了由组合框分隔开的两组复选框按钮。该命令条也演示了用于失效按钮的分隔图的用法。命令条上第三个按钮--列表视图按钮--是失效的。用于按钮的失效图像是一个看上去像X的位图，该位图位于失效按钮图象列表里。
在例程DoMainCommandVCombo中创建了第三个命令条。该命令条为下拉按钮提供了标准位图以及定制位图。演示了如何在包含多个位图的图象列表中引用图象的技术。下拉按钮使用了DoNotifyMain例程，当收到TBN_DROPDOWN通知后，该例程会装载和显示一个弹出式菜单。
当CmdBar最终被编译成Windows CE的嵌入式版本时，受CreateWindow中的风格标志影响，使其看上去有点不同。主窗口有标题栏，但不会占据整个屏幕。您可以通过拖拉窗口的边缘来调整窗口，通过拖动标题栏来移动窗口。通过借鉴WM_SIZE消息处理函数里的一些代码，该程序演示了命令条调整自身的能力。
