#include <windows.h>
struct
{
int iStyle ;
TCHAR * szText ;
}
button[] =
{
BS_PUSHBUTTON, TEXT ("PUSHBUTTON"),
BS_DEFPUSHBUTTON, TEXT ("DEFPUSHBUTTON"),
BS_CHECKBOX, TEXT ("CHECKBOX"),
BS_AUTOCHECKBOX, TEXT ("AUTOCHECKBOX"),
BS_RADIOBUTTON, TEXT ("RADIOBUTTON"),
BS_3STATE, TEXT ("3STATE"),
BS_AUTO3STATE, TEXT ("AUTO3STATE"),
BS_GROUPBOX, TEXT ("GROUPBOX"),
BS_AUTORADIOBUTTON, TEXT ("AUTORADIO"),
BS_OWNERDRAW, TEXT ("OWNERDRAW")
} ;
#define NUM (sizeof button / sizeof button[0])
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName[] = TEXT ("BtnLook") ;
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ;
wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = szAppName ;
if (!RegisterClass (&wndclass))
{
MessageBox (NULL, TEXT ("This program requires Windows NT!"),
szAppName, MB_ICONERROR) ;
return 0 ;
}
hwnd = CreateWindow (szAppName, TEXT ("Button Look"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hInstance, NULL) ;
ShowWindow (hwnd, iCmdShow) ;
UpdateWindow (hwnd) ;
while (GetMessage (&msg, NULL, 0, 0))
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
return msg.wParam ;
}
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static HWND hwndButton[NUM] ;
static RECT rect ;
static TCHAR szTop[] = TEXT ("message wParam lParam"),
szUnd[] = TEXT ("_______ ______ ______"),
szFormat[] = TEXT ("%-16s%04X-%04X %04X-%04X"),
szBuffer[50] ;
static int cxChar, cyChar ;
HDC hdc ;
PAINTSTRUCT ps ;
int i ;
switch (message)
{
case WM_CREATE :
cxChar = LOWORD (GetDialogBaseUnits ()) ;
cyChar = HIWORD (GetDialogBaseUnits ()) ;
for (i = 0 ; i < NUM ; i++)
hwndButton[i] = CreateWindow ( TEXT("button"),
button[i].szText,
WS_CHILD | WS_VISIBLE | button[i].iStyle,
cxChar, cyChar * (1 + 2 * i),
20 * cxChar, 7 * cyChar / 4,
hwnd, (HMENU) i,
(HINSTANCE)GetWindowLong(hwndButton[i],GWL_HINSTANCE), NULL) ;
//((LPCREATESTRUCT) lParam)->hInstance, NULL) ;
return 0 ;
case WM_SIZE :
rect.left = 24 * cxChar ;
rect.top = 2 * cyChar ;
rect.right = LOWORD (lParam) ;
rect.bottom = HIWORD (lParam) ;
return 0 ;
case WM_PAINT :
InvalidateRect (hwnd, &rect, TRUE) ;
hdc = BeginPaint (hwnd, &ps) ;
SelectObject (hdc, GetStockObject (SYSTEM_FIXED_FONT)) ;
SetBkMode (hdc, TRANSPARENT) ;
TextOut (hdc, 24 * cxChar, cyChar, szTop, lstrlen (szTop)) ;
TextOut (hdc, 24 * cxChar, cyChar, szUnd, lstrlen (szUnd)) ;
EndPaint (hwnd, &ps) ;
return 0 ;
case WM_DRAWITEM :
case WM_COMMAND :
ScrollWindow (hwnd, 0, -cyChar, &rect, &rect) ;
hdc = GetDC (hwnd) ;
SelectObject (hdc, GetStockObject (SYSTEM_FIXED_FONT)) ;
TextOut (hdc, 24 * cxChar, cyChar * (rect.bottom / cyChar - 1),
szBuffer,
wsprintf (szBuffer, szFormat,
message == WM_DRAWITEM ? TEXT ("WM_DRAWITEM") :
TEXT ("WM_COMMAND"),
HIWORD (wParam), LOWORD (wParam),
HIWORD (lParam), LOWORD (lParam))) ;
ReleaseDC (hwnd, hdc) ;
ValidateRect (hwnd, &rect) ;
break ;
case WM_LBUTTONDOWN:
MessageBox(hwnd,TEXT("ABC"),TEXT("XX"),MB_OK);
return 0;
case WM_DESTROY :
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
以上代码是子窗口控件那章的第一个例子，我加了一个WM_LBUTTONDOWN消息处理，关于这个程序我有点疑问：
1 这些标准控件是如何创建的？应该是根据类名创建的吧，难道这里的CreateWindow ( TEXT("button"), button就是标准的类名吗？系统自己创建的窗口类？应该是这样吧，不然创建不出来控件的。
2 这些标准控件会自动响应WM_COMMOND消息？那为什么我加了WM_LBUTTONDOWN他们就不响应呢？10个窗口只有一个GROUP控件会响应，其他都没反应的，求给这里一些合理的解释，谢谢。或者提供一些资料让我晓得原理也OK。
