1 //SYSMETS.H -- System metrics display structure 2 #include <Windows.h> 3 4 #define NUMLINES ((int) (sizeof(sysmetrics) / sizeof(sysmetrics[0]))) 5 6 struct 7 { 8 int iIndex; 9 TCHAR *szLabel; 10 TCHAR *szDesc; 11 } 12 sysmetrics[] = 13 { 14 SM_CXSCREEN, TEXT("SM_CXSCREEN"), TEXT("Screen width in pixels"), 15 SM_CYSCREEN, TEXT("SM_CYSCREEN"), TEXT("Screen height in pixels"), 16 SM_CXVSCROLL, TEXT("SM_CXVSCROLL"), TEXT("Vertical scroll width"), 17 SM_CYHSCROLL, TEXT("SM_CYHSCROLL"), TEXT("Horizontal scroll height"), 18 SM_CYCAPTION, TEXT("SM_CYCAPTION"), TEXT("Caption bar height"), 19 SM_CXBORDER, TEXT("SM_CXBORDER"), TEXT("Window border width"), 20 SM_CYBORDER, TEXT("SM_CYBORDER"), TEXT("Window border height"), 21 SM_CXFIXEDFRAME, TEXT("SM_CXFIXEDFRAME"), TEXT("Dialog window frame width"), 22 SM_CYFIXEDFRAME, TEXT("SM_CYFIXEDFRAME"), TEXT("Dialog window frame height"), 23 SM_CYVTHUMB, TEXT("SM_CYVTHUMB"), TEXT("Vertical scroll thumb height"), 24 SM_CXHTHUMB, TEXT("SM_CXHTHUMB"), TEXT("Horizontal scroll thumb width"), 25 SM_CXICON, TEXT("SM_CXICON"), TEXT("Icon width"), 26 SM_CYICON, TEXT("SM_CYICON"), TEXT("Icon height"), 27 SM_CXCURSOR, TEXT("SM_CXCURSOR"), TEXT("Cursor width"), 28 SM_CYCURSOR, TEXT("SM_CYCURSOR"), TEXT("Cursor height"), 29 SM_CYMENU, TEXT("SM_CYMENU"), TEXT("Menu bar height"), 30 SM_CXFULLSCREEN, TEXT("SM_CXFULLSCREEN"), TEXT("Full screen client area width"), 31 SM_CYFULLSCREEN, TEXT("SM_CYFULLSCREEN"), TEXT("Full screen client area height"), 32 SM_CYKANJIWINDOW, TEXT("SM_CYKANJIWINDOW"), TEXT("Kanji window height"), 33 SM_MOUSEPRESENT, TEXT("SM_MOUSEPRESENT"), TEXT("Mouse present flag"), 34 SM_CYVSCROLL, TEXT("SM_CYVSCROLL"), TEXT("Vertical scroll arrow height"), 35 SM_CXHSCROLL, TEXT("SM_CXHSCROLL"), TEXT("Horizontal scroll arrow width"), 36 SM_DEBUG, TEXT("SM_DEBUG"), TEXT("Debug version flag"), 37 SM_SWAPBUTTON, TEXT("SM_SWAPBUTTON"), TEXT("Mouse buttons swapped flag"), 38 SM_CXMIN, TEXT("SM_CXMIN"), TEXT("Minimum window width"), 39 SM_CYMIN, TEXT("SM_CYMIN"), TEXT("Minimum window height"), 40 SM_CXSIZE, TEXT("SM_CXSIZE"), TEXT("Min/Max/Close button width"), 41 SM_CYSIZE, TEXT("SM_CYSIZE"), TEXT("Min/Max/Close button height"), 42 SM_CXSIZEFRAME, TEXT("SM_CXSIZEFRAME"), TEXT("Window sizing frame width"), 43 SM_CYSIZEFRAME, TEXT("SM_CYSIZEFRAME"), TEXT("Window sizing frame height"), 44 SM_CXMINTRACK, TEXT("SM_CXMINTRACK"), TEXT("Minimum window tracking width"), 45 SM_CYMINTRACK, TEXT("SM_CYMINTRACK"), TEXT("Minimum window tracking height"), 46 SM_CXDOUBLECLK, TEXT("SM_CXDOUBLECLK"), TEXT("Double click x tolerance"), 47 SM_CYDOUBLECLK, TEXT("SM_CYDOUBLECLK"), TEXT("Double click y tolerance"), 48 SM_CXICONSPACING, TEXT("SM_CXICONSPACING"), TEXT("Horizontal icon spacing"), 49 SM_CYICONSPACING, TEXT("SM_CYICONSPACING"), TEXT("Vertical icon spacing"), 50 SM_MENUDROPALIGNMENT, TEXT("SM_MENUDROPALIGMENT"), TEXT("Left or right menu drop"), 51 SM_PENWINDOWS, TEXT("SM_PENWINDOWS"), TEXT("Pen extensions installed"), 52 SM_DBCSENABLED, TEXT("SM-DBCSENABLED"), TEXT("Double-Byte Char Set enable"), 53 SM_CMOUSEBUTTONS, TEXT("SM_CMOUSEBUTTONS"), TEXT("Number of mouse buttons"), 54 SM_SECURE, TEXT("SM_SECURE"), TEXT("Security present flag"), 55 SM_CXEDGE, TEXT("SM_CXEDGE"), TEXT("3-D border width"), 56 SM_CYEDGE, TEXT("SM_CYEDGE"), TEXT("3-D border height"), 57 SM_CXMINSPACING, TEXT("SM_CXMINSPACING"), TEXT("Minimized window spacing width"), 58 SM_CYMINSPACING, TEXT("SM-CYMINSPACING"), TEXT("Minimized window spacing height"), 59 SM_CXSMICON, TEXT("SM_CXSMICON"), TEXT("Small icon width"), 60 SM_CYSMICON, TEXT("SM_CYSMICON"), TEXT("Small icon height"), 61 SM_CYSMCAPTION, TEXT("SM_CYSMCAPTION"), TEXT("Small caption height"), 62 SM_CXSMSIZE, TEXT("SM_CXSMSIZE"), TEXT("Small caption button width"), 63 SM_CYSMSIZE, TEXT("SM_CYSMSIZE"), TEXT("Small caption button height"), 64 SM_CXMENUSIZE, TEXT("SM_CXMENUSIZE"), TEXT("Menu bar button width"), 65 SM_CYMENUSIZE, TEXT("SM_CYMENUSIZE"), TEXT("Menu bar button height"), 66 SM_ARRANGE, TEXT("SM_ARRANGE"), TEXT("How minimized windows arranged"), 67 SM_CXMINIMIZED, TEXT("SM_CXMINIMIZED"), TEXT("Minimized window width"), 68 SM_CYMINIMIZED, TEXT("SM_CYMINIMIZED"), TEXT("Minimized window height"), 69 SM_CXMAXTRACK, TEXT("SM_CXMAXTRACK"), TEXT("Maximum draggable width"), 70 SM_CYMAXTRACK, TEXT("SM_CYMAXTRACK"), TEXT("Maximum draggable height"), 71 SM_CXMAXIMIZED, TEXT("SM_CXMAXIMIZED"), TEXT("Width of maximized window"), 72 SM_CYMAXIMIZED, TEXT("SM_CYMAXIMIZED"), TEXT("Height of maximized windwo"), 73 SM_NETWORK, TEXT("SM_NETWORK"), TEXT("Network present flag"), 74 SM_CLEANBOOT, TEXT("SM_CLEANBOOT"), TEXT("How system was booted"), 75 SM_CXDRAG, TEXT("SM_CXDRAG"), TEXT("Avoid drag x tolerance"), 76 SM_CYDRAG, TEXT("SM_CYDRAG"), TEXT("Avoid drag x tolerance"), 77 SM_SHOWSOUNDS, TEXT("SM_SHOWSOUNDS"), TEXT("Present sounds visually"), 78 SM_CXMENUCHECK, TEXT("SM_CXMENUCHECK"), TEXT("Menu check-mark width"), 79 SM_CYMENUCHECK, TEXT("SM_CYMENUCHECK"), TEXT("Menu check-mark height"), 80 SM_SLOWMACHINE, TEXT("SM_SLOWMACHINE"), TEXT("Slow processor flag"), 81 SM_MIDEASTENABLED, TEXT("SM_MIDEASTENABLE"), TEXT("Hebrew and Arabic enabled flag"), 82 SM_MOUSEWHEELPRESENT, TEXT("SM_MOUSEWHEELPRESENT"), TEXT("Mouse wheel present flag"), 83 SM_XVIRTUALSCREEN, TEXT("SM_XVIRTUALSCREEN"), TEXT("Virtual screen x origin"), 84 SM_YVIRTUALSCREEN, TEXT("SM_YVIRTUALSCREEN"), TEXT("Virtual screen y origin"), 85 SM_CXVIRTUALSCREEN, TEXT("SM_CXVIRTUALSCREEN"), TEXT("Virtual screen width"), 86 SM_CYVIRTUALSCREEN, TEXT("SM_CYVIRTUALSCREEN"), TEXT("Virtual screen height"), 87 SM_CMONITORS, TEXT("SM_CMONITORS"), TEXT("Number of monitors"), 88 SM_SAMEDISPLAYFORMAT, TEXT("SM_SAMEDISPLAYFORMAT"), TEXT("Same color format flag") 89 };
1 /*----------------------------------------------- 2 SYSMETS4.C -- System Metrics Display Program No.4 3 (c) Charles Petzold, 1998 4 -----------------------------------------------*/ 5 6 #include <Windows.h> 7 #include "SYSMETS.h" 8 9 LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); 10 11 int WINAPI WinMain( __in HINSTANCE hInstance 12 , __in_opt HINSTANCE hPrevInstance 13 , __in LPSTR lpCmdLine 14 , __in int nShowCmd ) 15 { 16 static TCHAR szAppName[] = TEXT("SysMets4"); 17 HWND hwnd; 18 MSG msg; 19 WNDCLASS wndclass; 20 21 wndclass.style = CS_HREDRAW | CS_VREDRAW; 22 wndclass.lpfnWndProc = WndProc; 23 wndclass.cbClsExtra = 0; 24 wndclass.cbWndExtra= 0; 25 wndclass.hInstance = hInstance; 26 wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION); 27 wndclass.hCursor = LoadCursor(NULL, IDC_ARROW); 28 wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); 29 wndclass.lpszMenuName = NULL; 30 wndclass.lpszClassName = szAppName; 31 32 if (!RegisterClass(&wndclass)) 33 { 34 MessageBox(hwnd, TEXT("Program requires Windows NT !") 35 , szAppName, MB_ICONERROR); 36 return 0; 37 } 38 39 hwnd = CreateWindow(szAppName, TEXT("Get System Metrics No.4") 40 , WS_OVERLAPPEDWINDOW | WS_VSCROLL | WS_HSCROLL 41 , CW_USEDEFAULT, CW_USEDEFAULT 42 , CW_USEDEFAULT, CW_USEDEFAULT 43 , NULL, NULL, hInstance, NULL); 44 45 ShowWindow(hwnd, nShowCmd); 46 UpdateWindow(hwnd); 47 48 while (GetMessage(&msg, NULL, 0, 0)) 49 { 50 TranslateMessage(&msg); 51 DispatchMessage(&msg); 52 } 53 54 return msg.wParam; 55 } 56 57 LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) 58 { 59 static int cxChar, cxCaps, cyChar, cxClient, cyClient, iMaxWidth; 60 HDC hdc; 61 int i, x, y, iVertPos, iHorzPos, iPaintBeg, iPaintEnd; 62 PAINTSTRUCT ps; 63 SCROLLINFO si; 64 TCHAR szBuffer[10]; 65 TEXTMETRIC tm; 66 67 switch (message) 68 { 69 case WM_CREATE: 70 hdc = GetDC(hwnd); 71 GetTextMetrics(hdc, &tm); 72 cxChar = tm.tmAveCharWidth; 73 cxCaps = (tm.tmPitchAndFamily & 1 ? 3 : 2) * cxChar / 2; 74 cyChar = tm.tmHeight + tm.tmExternalLeading; 75 ReleaseDC(hwnd, hdc); 76 77 //save the width of the three columns 78 iMaxWidth = 40 * cxChar + 22 * cxCaps; 79 return 0; 80 81 case WM_SIZE: 82 cxClient = LOWORD(lParam); 83 cyClient = HIWORD(lParam); 84 85 //set vertical scroll bar range and page size 86 si.cbSize = sizeof(si); 87 si.fMask = SIF_RANGE | SIF_PAGE; 88 si.nMin = 0; 89 si.nMax = NUMLINES - 1; 90 si.nPage = cyClient / cyChar; 91 SetScrollInfo(hwnd, SB_VERT, &si, TRUE); 92 93 //set horizontal scroll bar range and page size 94 si.cbSize = sizeof(si); 95 si.fMask = SIF_RANGE | SIF_PAGE; 96 si.nMin = 0; 97 si.nMax = 2 + iMaxWidth / cxChar; 98 si.nPage = cxClient / cxChar; 99 SetScrollInfo(hwnd, SB_HORZ, &si, TRUE); 100 return 0; 101 102 case WM_VSCROLL: 103 //get all the vertical scroll bar information 104 si.cbSize= sizeof(si); 105 si.fMask = SIF_ALL; 106 GetScrollInfo(hwnd, SB_VERT, &si); 107 108 //save the position for comparison later on 109 iVertPos = si.nPos; 110 111 switch (LOWORD(wParam)) 112 { 113 case SB_TOP: 114 si.nPos = si.nMin; 115 break; 116 117 case SB_BOTTOM: 118 si.nPos = si.nMax; 119 break; 120 121 case SB_LINEUP: 122 si.nPos -= 1; 123 break; 124 125 case SB_LINEDOWN: 126 si.nPos += 1; 127 break; 128 129 case SB_PAGEUP: 130 si.nPos -= si.nPage; 131 break; 132 133 case SB_PAGEDOWN: 134 si.nPos += si.nPage; 135 break; 136 137 case SB_THUMBTRACK: 138 si.nPos = si.nTrackPos; 139 break; 140 141 default: 142 break; 143 } 144 145 //Set the position and then retrieve it. Due to adjustments 146 //by windows it might not be the same as the value set. 147 si.fMask = SIF_POS; 148 SetScrollInfo(hwnd, SB_VERT, &si, TRUE); 149 GetScrollInfo(hwnd, SB_VERT, &si); 150 151 //if the position has changed, scroll the window and update it 152 if (si.nPos != iVertPos) 153 { 154 ScrollWindow(hwnd, 0, cyChar * (iVertPos - si.nPos), NULL, NULL); 155 UpdateWindow(hwnd); 156 } 157 return 0; 158 159 case WM_HSCROLL: 160 //get all the horizontal scroll bar information 161 si.cbSize = sizeof(si); 162 si.fMask = SIF_ALL; 163 164 //save the position for comparison later on 165 GetScrollInfo(hwnd, SB_HORZ, &si); 166 iHorzPos = si.nPos; 167 168 switch (LOWORD(wParam)) 169 { 170 case SB_LINELEFT: 171 si.nPos -= 1; 172 break; 173 174 case SB_LINERIGHT: 175 si.nPos += 1; 176 break; 177 178 case SB_PAGELEFT: 179 si.nPos -= si.nPage; 180 break; 181 182 case SB_PAGERIGHT: 183 si.nPos += si.nPage; 184 break; 185 186 case SB_THUMBPOSITION: 187 si.nPos = si.nTrackPos; 188 break; 189 190 default: 191 break; 192 } 193 194 //Set the position and then retrieve it. Due to adjustments 195 //by window it might not be the same as the value set. 196 si.fMask = SIF_POS; 197 SetScrollInfo(hwnd, SB_HORZ, &si, TRUE); 198 GetScrollInfo(hwnd, SB_HORZ, &si); 199 200 //if the position has changed, scroll the window. 201 if (si.nPos != iHorzPos) 202 { 203 ScrollWindow(hwnd, cxChar * (iHorzPos - si.nPos), 0, NULL, NULL); 204 UpdateWindow(hwnd); 205 } 206 return 0; 207 208 case WM_KEYDOWN: 209 switch (wParam) 210 { 211 case VK_HOME: 212 SendMessage(hwnd, WM_VSCROLL, SB_TOP, 0); 213 break; 214 215 case VK_END: 216 SendMessage(hwnd, WM_VSCROLL, SB_BOTTOM, 0); 217 break; 218 219 case VK_PRIOR: 220 SendMessage(hwnd, WM_VSCROLL, SB_PAGEUP, 0); 221 break; 222 223 case VK_NEXT: 224 SendMessage(hwnd, WM_VSCROLL, SB_PAGEDOWN, 0); 225 break; 226 227 case VK_UP: 228 SendMessage(hwnd, WM_VSCROLL, SB_LINEUP, 0); 229 break; 230 231 case VK_DOWN: 232 SendMessage(hwnd, WM_VSCROLL, SB_LINEDOWN, 0); 233 break; 234 235 case VK_LEFT: 236 SendMessage(hwnd, WM_HSCROLL, SB_PAGEUP, 0); 237 break; 238 239 case VK_RIGHT: 240 SendMessage(hwnd, WM_HSCROLL, SB_PAGEDOWN, 0); 241 break; 242 } 243 return 0; 244 245 case WM_PAINT: 246 hdc = BeginPaint(hwnd, &ps); 247 248 //get vertical scroll bar position 249 si.cbSize = sizeof(si); 250 si.fMask = SIF_POS; 251 GetScrollInfo(hwnd, SB_VERT, &si); 252 iVertPos = si.nPos; 253 254 //get horizontal scroll bar position 255 GetScrollInfo(hwnd, SB_HORZ, &si); 256 iHorzPos = si.nPos; 257 258 //find paintint limits 259 iPaintBeg = max(0, iVertPos + ps.rcPaint.top / cyChar); 260 iPaintEnd = min(NUMLINES - 1, iVertPos + ps.rcPaint.bottom / cyChar); 261 262 for (i = iPaintBeg; i <= iPaintEnd; ++i) 263 { 264 x = cxChar * (1 - iHorzPos); 265 y = cyChar * (i - iVertPos); 266 267 TextOut(hdc, x, y, sysmetrics[i].szLabel, lstrlen(sysmetrics[i].szLabel)); 268 269 TextOut(hdc, x + 22 * cxCaps, y, sysmetrics[i].szDesc, lstrlen(sysmetrics[i].szDesc)); 270 271 SetTextAlign(hdc, TA_RIGHT | TA_TOP); 272 273 TextOut(hdc, x + 22 * cxCaps + 40 * cxChar, y, szBuffer 274 , wsprintf(szBuffer, TEXT("%5d"), GetSystemMetrics(sysmetrics[i].iIndex))); 275 276 SetTextAlign(hdc, TA_LEFT | TA_TOP); 277 } 278 279 EndPaint(hwnd, &ps); 280 return 0; 281 282 case WM_DESTROY: 283 PostQuitMessage(0); 284 return 0; 285 } 286 287 return DefWindowProc(hwnd, message, wParam, lParam); 288 }