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- /*----------------------------------------
- BTNLOOK.C -- Button Look Program
- (c) Charles Petzold, 1990
- ----------------------------------------*/
-
- #include <windows.h>
- #include <stdio.h>
-
- struct
- {
- long style ;
- char *text ;
- }
- button[] =
- {
- BS_PUSHBUTTON, "PUSHBUTTON",
- BS_DEFPUSHBUTTON, "DEFPUSHBUTTON",
- BS_CHECKBOX, "CHECKBOX",
- BS_AUTOCHECKBOX, "AUTOCHECKBOX",
- BS_RADIOBUTTON, "RADIOBUTTON",
- BS_3STATE, "3STATE",
- BS_AUTO3STATE, "AUTO3STATE",
- BS_GROUPBOX, "GROUPBOX",
- BS_USERBUTTON, "USERBUTTON",
- BS_AUTORADIOBUTTON, "AUTORADIO",
- BS_PUSHBOX, "PUSHBOX"
- } ;
-
- #define NUM (sizeof button / sizeof button [0])
-
- long FAR PASCAL WndProc (HWND, WORD, WORD, LONG) ;
-
- int PASCAL WinMain (HANDLE hInstance, HANDLE hPrevInstance,
- LPSTR lpszCmdLine, int nCmdShow)
- {
- static char szAppName[] = "BtnLook" ;
- HWND hwnd ;
- MSG msg ;
- WNDCLASS wndclass ;
-
- if (!hPrevInstance)
- {
- 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 = GetStockObject (WHITE_BRUSH) ;
- wndclass.lpszMenuName = NULL ;
- wndclass.lpszClassName = szAppName ;
-
- RegisterClass (&wndclass) ;
- }
-
- hwnd = CreateWindow (szAppName, "Button Look",
- WS_OVERLAPPEDWINDOW,
- CW_USEDEFAULT, CW_USEDEFAULT,
- CW_USEDEFAULT, CW_USEDEFAULT,
- NULL, NULL, hInstance, NULL) ;
-
- ShowWindow (hwnd, nCmdShow) ;
- UpdateWindow (hwnd) ;
-
- while (GetMessage (&msg, NULL, 0, 0))
- {
- TranslateMessage (&msg) ;
- DispatchMessage (&msg) ;
- }
- return msg.wParam ;
- }
-
- long FAR PASCAL WndProc (HWND hwnd, WORD message, WORD wParam, LONG lParam)
- {
- static char szPrm [] = "wParam LOWORD(lParam) HIWORD(lParam)",
- szTop [] = "Control ID Window Handle Notification",
- szUnd [] = "__________ _____________ ____________",
- szFormat [] = " %5u %4X %5u",
- szBuffer [50] ;
- static HWND hwndButton [NUM] ;
- static RECT rect ;
- static int cxChar, cyChar ;
- HDC hdc ;
- PAINTSTRUCT ps ;
- int i ;
- TEXTMETRIC tm ;
-
- switch (message)
- {
- case WM_CREATE:
- hdc = GetDC (hwnd) ;
- SelectObject (hdc, GetStockObject (SYSTEM_FIXED_FONT)) ;
- GetTextMetrics (hdc, &tm) ;
- cxChar = tm.tmAveCharWidth ;
- cyChar = tm.tmHeight + tm.tmExternalLeading ;
- ReleaseDC (hwnd, hdc) ;
-
- for (i = 0 ; i < NUM ; i++)
- hwndButton [i] = CreateWindow ("button", button[i].text,
- WS_CHILD | WS_VISIBLE | button[i].style,
- cxChar, cyChar * (1 + 2 * i),
- 20 * cxChar, 7 * cyChar / 4,
- hwnd, i,
- ((LPCREATESTRUCT) lParam) -> hInstance, NULL) ;
- return 0 ;
-
- case WM_SIZE:
- rect.left = 24 * cxChar ;
- rect.top = 3 * 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, 1 * cyChar, szPrm, sizeof szPrm - 1);
- TextOut (hdc, 24 * cxChar, 2 * cyChar, szTop, sizeof szTop - 1);
- TextOut (hdc, 24 * cxChar, 2 * cyChar, szUnd, sizeof szUnd - 1);
-
- EndPaint (hwnd, &ps) ;
- return 0 ;
-
- 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, sprintf (szBuffer, szFormat, wParam,
- LOWORD (lParam), HIWORD (lParam))) ;
-
- ReleaseDC (hwnd, hdc) ;
- ValidateRect (hwnd, NULL) ;
- return 0 ;
-
- case WM_DESTROY:
- PostQuitMessage (0) ;
- return 0 ;
- }
- return DefWindowProc (hwnd, message, wParam, lParam) ;
- }
-