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- /*------------------------------------------
- ABOUT3.C -- About Box Demo Program No. 3
- (c) Charles Petzold, 1996
- ------------------------------------------*/
-
- #include <windows.h>
- #include "about3.h"
-
- LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
- BOOL CALLBACK AboutDlgProc (HWND, UINT, WPARAM, LPARAM) ;
- LRESULT CALLBACK EllipPushWndProc (HWND, UINT, WPARAM, LPARAM) ;
-
- int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
- PSTR szCmdLine, int iCmdShow)
- {
- static char szAppName[] = "About3" ;
- MSG msg ;
- HWND hwnd ;
- WNDCLASSEX wndclass ;
-
- wndclass.cbSize = sizeof (wndclass) ;
- wndclass.style = CS_HREDRAW | CS_VREDRAW ;
- wndclass.lpfnWndProc = WndProc ;
- wndclass.cbClsExtra = 0 ;
- wndclass.cbWndExtra = 0 ;
- wndclass.hInstance = hInstance ;
- wndclass.hIcon = LoadIcon (hInstance, szAppName) ;
- wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
- wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
- wndclass.lpszMenuName = szAppName ;
- wndclass.lpszClassName = szAppName ;
- wndclass.hIconSm = LoadIcon (hInstance, szAppName) ;
-
- RegisterClassEx (&wndclass) ;
-
- wndclass.cbSize = sizeof (wndclass) ;
- wndclass.style = CS_HREDRAW | CS_VREDRAW ;
- wndclass.lpfnWndProc = EllipPushWndProc ;
- wndclass.cbClsExtra = 0 ;
- wndclass.cbWndExtra = 0 ;
- wndclass.hInstance = hInstance ;
- wndclass.hIcon = NULL ;
- wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
- wndclass.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1) ;
- wndclass.lpszMenuName = NULL ;
- wndclass.lpszClassName = "EllipPush" ;
- wndclass.hIconSm = NULL ;
-
- RegisterClassEx (&wndclass) ;
-
- hwnd = CreateWindow (szAppName, "About Box Demo Program",
- 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 iMsg, WPARAM wParam, LPARAM lParam)
- {
- static HINSTANCE hInstance ;
-
- switch (iMsg)
- {
- case WM_CREATE :
- hInstance = ((LPCREATESTRUCT) lParam)->hInstance ;
- return 0 ;
-
- case WM_COMMAND :
- switch (LOWORD (wParam))
- {
- case IDM_ABOUT :
- DialogBox (hInstance, "AboutBox", hwnd,
- AboutDlgProc) ;
- return 0 ;
- }
- break ;
-
- case WM_DESTROY :
- PostQuitMessage (0) ;
- return 0 ;
- }
- return DefWindowProc (hwnd, iMsg, wParam, lParam) ;
- }
-
- BOOL CALLBACK AboutDlgProc (HWND hDlg, UINT iMsg, WPARAM wParam, LPARAM lParam)
- {
- switch (iMsg)
- {
- case WM_INITDIALOG :
- return TRUE ;
-
- case WM_COMMAND :
- switch (LOWORD (wParam))
- {
- case IDOK :
- EndDialog (hDlg, 0) ;
- return TRUE ;
- }
- break ;
- }
- return FALSE ;
- }
-
- LRESULT CALLBACK EllipPushWndProc (HWND hwnd, UINT iMsg, WPARAM wParam,
- LPARAM lParam)
- {
- char szText[40] ;
- HBRUSH hBrush ;
- HDC hdc ;
- PAINTSTRUCT ps ;
- RECT rect ;
-
- switch (iMsg)
- {
- case WM_PAINT :
- GetClientRect (hwnd, &rect) ;
- GetWindowText (hwnd, szText, sizeof (szText)) ;
-
- hdc = BeginPaint (hwnd, &ps) ;
-
- hBrush = CreateSolidBrush (GetSysColor (COLOR_WINDOW)) ;
- hBrush = (HBRUSH) SelectObject (hdc, hBrush) ;
- SetBkColor (hdc, GetSysColor (COLOR_WINDOW)) ;
- SetTextColor (hdc, GetSysColor (COLOR_WINDOWTEXT)) ;
-
- Ellipse (hdc, rect.left, rect.top, rect.right, rect.bottom) ;
- DrawText (hdc, szText, -1, &rect,
- DT_SINGLELINE | DT_CENTER | DT_VCENTER) ;
-
- DeleteObject (SelectObject (hdc, hBrush)) ;
-
- EndPaint (hwnd, &ps) ;
- return 0 ;
-
- case WM_KEYUP :
- if (wParam != VK_SPACE)
- break ;
- // fall through
- case WM_LBUTTONUP :
- SendMessage (GetParent (hwnd), WM_COMMAND,
- GetWindowLong (hwnd, GWL_ID), (LPARAM) hwnd) ;
- return 0 ;
- }
- return DefWindowProc (hwnd, iMsg, wParam, lParam) ;
- }
-