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- /*-----------------------------------------------
- UNICHARS.C -- Displays 16-bit character codes
- (c) Charles Petzold, 1998
- -----------------------------------------------*/
-
- #include <windows.h>
- #include "resource.h"
-
- LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
-
- int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
- PSTR szCmdLine, int iCmdShow)
- {
- static TCHAR szAppName[] = TEXT ("UniChars") ;
- 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 = szAppName ;
- wndclass.lpszClassName = szAppName ;
-
- if (!RegisterClass (&wndclass))
- {
- MessageBox (NULL, TEXT ("This program requies Windows NT!"),
- szAppName, MB_ICONERROR) ;
- return 0 ;
- }
-
- hwnd = CreateWindow (szAppName, TEXT ("Unicode Characters"),
- WS_OVERLAPPEDWINDOW | WS_VSCROLL,
- 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 CHOOSEFONT cf ;
- static int iPage ;
- static LOGFONT lf ;
- HDC hdc ;
- int cxChar, cyChar, x, y, i, cxLabels ;
- PAINTSTRUCT ps ;
- SIZE size ;
- TCHAR szBuffer [8] ;
- TEXTMETRIC tm ;
- WCHAR ch ;
-
- switch (message)
- {
- case WM_CREATE:
- hdc = GetDC (hwnd) ;
- lf.lfHeight = - GetDeviceCaps (hdc, LOGPIXELSY) / 6 ; // 12 points
- lstrcpy (lf.lfFaceName, TEXT ("Lucida Sans Unicode")) ;
- ReleaseDC (hwnd, hdc) ;
-
- cf.lStructSize = sizeof (CHOOSEFONT) ;
- cf.hwndOwner = hwnd ;
- cf.lpLogFont = &lf ;
- cf.Flags = CF_INITTOLOGFONTSTRUCT | CF_SCREENFONTS ;
-
- SetScrollRange (hwnd, SB_VERT, 0, 255, FALSE) ;
- SetScrollPos (hwnd, SB_VERT, iPage, TRUE ) ;
- return 0 ;
-
- case WM_COMMAND:
- switch (LOWORD (wParam))
- {
- case IDM_FONT:
- if (ChooseFont (&cf))
- InvalidateRect (hwnd, NULL, TRUE) ;
- return 0 ;
- }
- return 0 ;
-
- case WM_VSCROLL:
- switch (LOWORD (wParam))
- {
- case SB_LINEUP: iPage -= 1 ; break ;
- case SB_LINEDOWN: iPage += 1 ; break ;
- case SB_PAGEUP: iPage -= 16 ; break ;
- case SB_PAGEDOWN: iPage += 16 ; break ;
- case SB_THUMBPOSITION: iPage = HIWORD (wParam) ; break ;
-
- default:
- return 0 ;
- }
-
- iPage = max (0, min (iPage, 255)) ;
-
- SetScrollPos (hwnd, SB_VERT, iPage, TRUE) ;
- InvalidateRect (hwnd, NULL, TRUE) ;
- return 0 ;
-
- case WM_PAINT:
- hdc = BeginPaint (hwnd, &ps) ;
-
- SelectObject (hdc, CreateFontIndirect (&lf)) ;
-
- GetTextMetrics (hdc, &tm) ;
- cxChar = tm.tmMaxCharWidth ;
- cyChar = tm.tmHeight + tm.tmExternalLeading ;
-
- cxLabels = 0 ;
-
- for (i = 0 ; i < 16 ; i++)
- {
- wsprintf (szBuffer, TEXT (" 000%1X: "), i) ;
- GetTextExtentPoint (hdc, szBuffer, 7, &size) ;
-
- cxLabels = max (cxLabels, size.cx) ;
- }
-
- for (y = 0 ; y < 16 ; y++)
- {
- wsprintf (szBuffer, TEXT (" %03X_: "), 16 * iPage + y) ;
- TextOut (hdc, 0, y * cyChar, szBuffer, 7) ;
-
- for (x = 0 ; x < 16 ; x++)
- {
- ch = (WCHAR) (256 * iPage + 16 * y + x) ;
- TextOutW (hdc, x * cxChar + cxLabels,
- y * cyChar, &ch, 1);
- }
- }
-
- DeleteObject (SelectObject (hdc, GetStockObject (SYSTEM_FONT)));
- EndPaint (hwnd, &ps) ;
- return 0 ;
-
- case WM_DESTROY:
- PostQuitMessage (0) ;
- return 0 ;
- }
- return DefWindowProc (hwnd, message, wParam, lParam) ;
- }
-