第十八课 通用控件
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ToolbarWindow32 | Toolbar |
tooltips_class32 | Tooltip |
msctls_statusbar32 | Status bar |
SysTreeView32 | Tree view |
SysListView32 | List view |
SysAnimate32 | Animation |
SysHeader32 | Header |
msctls_hotkey32 | Hot-key |
msctls_progress32 | Progress bar |
RICHEDIT | Rich edit |
msctls_updown32 | Up-down |
SysTabControl32 | Tab |
Property sheets、property pages和image list控件有它们自己的创建函数。Drag list其实是可以伸缩的listbox控件,所以它没有自己的类名。上面的类名是VC++的资源编辑器提供的,它们和Borland公司的WIN32 API指南中提出的不一样,和Petzold的书《Programming Windows 95》也不一样。可以肯定的是我们上面列出的类名绝对准确。 这些通用控件可以有通用的窗口类的一些风格,譬如WS_CHILD等。它们当然还有其他的特殊风格,譬如树型视图控件就有TVS_XXXXX风格,列表控件就有LVS_xxxx风格。具体的最好查找有关的WIN32 API函数指南。 既然我们已经知道了如何创建一个通用控件,我们就可以讨论这些通用控件之间以及和它们的父窗口之间是如何通讯的了。不象子窗口控件,通用控件在某些状态发生变化时不是通过发送WM_COMMAND而是发送WM_NOTIFY消息和父窗口通讯的。父窗口可以通过发送消息来控制子窗口的行为。对于那些新的通用控件,还有一些新的消息类型。您可以参考您的WIN32 API手册。
在下面的例子中我们将要实验一下进度条和状态条。
WinMain PROTO :DWORD,:DWORD,:DWORD,:DWORD
.const
IDC_PROGRESS equ
1 ; control
IDs
IDC_STATUS equ 2
IDC_TIMER equ 3
.data
ClassName db "CommonControlWinClass",0
AppName db "Common Control Demo",0
ProgressClass db
"msctls_progress32",0 ; the class name of
the progress bar
Message db "Finished!",0
TimerID dd 0
.data?
hInstance HINSTANCE ?
hwndProgress dd
?
hwndStatus dd ?
CurrentStep dd ?
.code
start:
invoke GetModuleHandle, NULL
mov hInstance,eax
invoke WinMain, hInstance,NULL,NULL,
SW_SHOWDEFAULT
invoke ExitProcess,eax
invoke InitCommonControls
WinMain proc
hInst:HINSTANCE,hPrevInst:HINSTANCE,CmdLine:LPSTR,CmdShow:DWORD
LOCAL wc:WNDCLASSEX
LOCAL msg:MSG
LOCAL hwnd:HWND
mov wc.cbSize,SIZEOF WNDCLASSEX
mov wc.style, CS_HREDRAW or CS_VREDRAW
mov wc.lpfnWndProc, OFFSET WndProc
mov wc.cbClsExtra,NULL
mov wc.cbWndExtra,NULL
push hInst
pop wc.hInstance
mov
wc.hbrBackground,COLOR_APPWORKSPACE
mov wc.lpszMenuName,NULL
mov wc.lpszClassName,OFFSET ClassName
invoke LoadIcon,NULL,IDI_APPLICATION
mov wc.hIcon,eax
mov
wc.hIconSm,eax
invoke
LoadCursor,NULL,IDC_ARROW
mov
wc.hCursor,eax
invoke RegisterClassEx, addr wc
invoke CreateWindowEx,WS_EX_CLIENTEDGE,ADDR
ClassName,ADDR AppName,\
WS_OVERLAPPED+WS_CAPTION+WS_SYSMENU+WS_MINIMIZEBOX+WS_MAXIMIZEBOX+WS_VISIBLE,CW_USEDEFAULT,\
CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,\
hInst,NULL
mov hwnd,eax
.while TRUE
invoke GetMessage, ADDR
msg,NULL,0,0
.BREAK .IF
(!eax)
invoke
TranslateMessage, ADDR msg
invoke DispatchMessage, ADDR msg
.endw
mov eax,msg.wParam
ret
WinMain endp
WndProc proc hWnd:HWND, uMsg:UINT, wParam:WPARAM, lParam:LPARAM
.if uMsg==WM_CREATE
invoke
CreateWindowEx,NULL,ADDR ProgressClass,NULL,\
WS_CHILD+WS_VISIBLE,100,\
200,300,20,hWnd,IDC_PROGRESS,\
hInstance,NULL
mov
hwndProgress,eax
mov
eax,1000
; the lParam of PBM_SETRANGE message contains the range
mov CurrentStep,eax
shl
eax,16
; the high range is in the high word
invoke
SendMessage,hwndProgress,PBM_SETRANGE,0,eax
invoke
SendMessage,hwndProgress,PBM_SETSTEP,10,0
invoke
CreateStatusWindow,WS_CHILD+WS_VISIBLE,NULL,hWnd,IDC_STATUS
mov hwndStatus,eax
invoke
SetTimer,hWnd,IDC_TIMER,100,NULL ;
create a timer
mov
TimerID,eax
.elseif uMsg==WM_DESTROY
invoke
PostQuitMessage,NULL
.if
TimerID!=0
invoke
KillTimer,hWnd,TimerID
.endif
.elseif
uMsg==WM_TIMER ; when a timer event
occurs
invoke
SendMessage,hwndProgress,PBM_STEPIT,0,0 ; step up the progress
in the progress bar
sub
CurrentStep,10
.if
CurrentStep==0
invoke
KillTimer,hWnd,TimerID
mov
TimerID,0
invoke
SendMessage,hwndStatus,SB_SETTEXT,0,addr Message
invoke
MessageBox,hWnd,addr Message,addr AppName,MB_OK+MB_ICONINFORMATION
invoke
SendMessage,hwndStatus,SB_SETTEXT,0,0
invoke
SendMessage,hwndProgress,PBM_SETPOS,0,0
.endif
.else
invoke
DefWindowProc,hWnd,uMsg,wParam,lParam
ret
.endif
xor eax,eax
ret
WndProc endp
end start
如果SetTimer调用成功的话就会返回计时器的ID号值,否则返回0。这也是为什么计时器的ID号必须为非零值的原因。