The control is a sub-window, which is a system that has defined a good window class, so it does not need to be registered, nor does it need to write message processing functions. Create a sub-window when you get a WM_CREATE message at the main window.
Second, instance
// Parameter: window handle, message, message parameter, message parameters
Lresult Callback WndProc (HWND HWND, UINT MESSAGE, WPARAM WPARAM, LPARAM LPARAM)
{
// Test the message of interest
Switch (Message)
{
Case WM_CREATE:
CreateWindow (Text ("Button"), // Control "class name"
Text ("button (& a)),
WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
10,
10,
100,
100,
HWnd,
(HMENU) 1000, // Control ID
(LpcreateStruct) LPARAM -> Hinstance, // Example handle
NULL);
Return 0;
Case WM_DESTROY:
// When the user closes the window, the window is destroyed, the program needs to end, send out the message to exit the message loop
PostquitMessage (0);
Return 0;
}
/ / Other messages are handed over to the default processing function provided by the system
Return :: DefWindowProc (Hwnd, Message, WParam, Lparam);
}
Third, about WM_CREATE message
The LPARAM parameter of WM_CREATE will be incompatated to create a job structure pointer (lpCreateStruct).
The structure contains some useful information (parameters when the window is established).
Typedef struct tagcreatestruct {
LPVOID LPCREATEPARAMS;
Hinstance hinstance; // instance handle
Hmenu Hmenu;
HWND HWNDPARENT;
int Cy;
Int CX;
Int Y;
INT X;
Long style;
LPCTSTR LPSZNAME;
LPCTSTR LPSZCLASS;
DWORD DWEXSTYLE;
CreateStruct, * lpcreatestruct;
Fourth, collaboration between control and parent window
1. When an action occurs on the control, the notification message WM_COMMAND will be sent to the parent window.
WM_COMMAND:
HiWord (WPARAM): Notification Code
LOWORD (WPARAM): Control ID
(HWnd) LPARAM: Control handle
In addition to WM_COMMAND, each control may have other notification messages (such as WM_DRAWITEM).
2. When the parent window needs to control the control, send the control message to the control. The control handle should be recorded in advance, or get the control handle by the ID
3. Note: Notification of the various controls and control messages can be checked by MSDN-> Platform SDK-> User Interface Services-> Windows User Interface-> Controls.
V. Control "Class Name" 1. Standard Control Button: Composite B /T: Edit Listbox: List Richedit: Rich Edit Version 1.0RichEdit_class: Rich Edit Version 2.0 Scrollbar: Strike Static: Static
2. Common Controls included with the shell: INTCOMMONCONTROLSEX before establishing
ICMMONCONTROLSEX ICEX; // EnSure That The Common Control DLL IS loaded.icex.dwsize = sizeof (InitCommontrolsex);
Icex.dwicc = ICC_ListView_Classes;
INITCOMMONCONTROLSEX (& ICEX);
HWND HWNDLISTVIEW = CREATEWINDOWEX (0, wc_listview, // wc_listview does not need to be quoted
TEXT (""),
WS_CHILD | WS_VISIBLE | WS_BORDER | LVS_ICON | LVS_EDITLABELS | WS_EX_CLIENTEDGE,
10,
10,
100,
100,
HWnd,
(HMENU) 1000, // Control ID
(LpcreateStruct) LPARAM -> Hinstance, // Example handle
NULL);
Animate_class
DateTimePick_class
HotKey_Class
Monthcal_class
PROGRESS_CLASS
RebarclassName
StatusClassName
ToolbarclassName
Tooltips_class
TRACKBAR_CLASS
UPDOWN_CLASS
WC_COMBOBOXEX
WC_HEADER
WC_IPAddress
WC_ListView
WC_PAGESCROLLER
WC_TABCONTROL
WC_TreeView
3. Special window MDIClient: MDI client area of the window ComboLBox: The class for the list box contained in a combo box DDEMLEvent:. Windows NT / 2000: The class for DDEML events Message:. Windows 2000: The class for a message-only window . # 32769: The class for the desktop window. # 32770: The class for a dialog box. # 32771: The class for the task switch window. # 32772: Windows NT / 2000: The Class for icon titles.
