自学教程：C++ GUI_DispStringHCenterAt函数代码示例

/***********************************************************************       _DrawScreen*/static void _DrawScreen(void) {  GUI_RECT Rect;  int yd;  GUI_DrawBitmap(&_bmSeggerLogo_50x25, 10, 10);  GUI_SetFont(GUI_FONT_20B_ASCII);  GUI_DispStringHCenterAt("Antialiased text sample", 190, 5);  GUI_SetFont(GUI_FONT_13_ASCII);  GUI_DispStringHCenterAt("Shows antialiased text on different backgrounds.", 190, 25);  Rect.x0 = 0;  Rect.y0 = 43;  Rect.x1 = 59;  Rect.y1 = Rect.y0 + 95;  yd = (Rect.y1 - Rect.y0) / 3;  //  // 4 bit antialiasing sample  //  _DrawText("Antialiased text/n (4 bpp)", &Rect);  GUI_SetFont(&_FontAA4_32);  _DrawSample(&Rect, yd);  //  // 2 bit antialiasing sample  //  GUI_MoveRect(&Rect, 0, 101);  _DrawText("Antialiased text/n (2 bpp)", &Rect);  GUI_SetFont(&_FontAA2_32);  _DrawSample(&Rect, yd);}

/***********************************************************************       GUIDEMO_ShowIntro**   This function has to be called by every sample*/void GUIDEMO_ShowIntro(const char * acTitle, const char * acDescription) {  int xSize, ySize, xCenter, yCenter, FontDistY, TimeWait, i;  xSize   = LCD_GetXSize();  ySize   = LCD_GetYSize();  xCenter = xSize >> 1;  yCenter = ySize >> 1;  GUIDEMO_HideInfoWin();  GUIDEMO_ShowControlWin();  GUI_Exec();  GUIDEMO_DrawBk(1);  GUI_SetColor(GUI_WHITE);  //  // Title  //  GUI_SetTextMode(GUI_TM_TRANS);  GUI_SetFont(&GUI_FontRounded22);  GUI_DispStringHCenterAt(acTitle, xCenter, 60);  //  // Description  //  GUI_SetFont(&GUI_FontSouvenir18);  FontDistY = GUI_GetFontDistY();  GUI_DispStringHCenterAt(acDescription, xCenter, yCenter - FontDistY + 10);  //  // Determine time to wait  //  i = 0;  while (acDescription[i]) {    i++;  }  TimeWait = i * 80;  GUIDEMO_Wait(TimeWait);}

/*********************************************************************       _DemoHardkey** Function description*   Demonstrates HARDKEY simulation with a listbox*/static void _DemoHardkey(void) {  LISTBOX_Handle hListBox;  GUI_SetBkColor(GUI_BLACK);  GUI_Clear();  GUI_SetColor(GUI_WHITE);  GUI_SetTextAlign(GUI_TA_HCENTER);  GUI_SetFont(&GUI_Font24_ASCII);  GUI_DispStringAt("Hardkey - Sample", 160, 5);  GUI_SetFont(&GUI_Font8x8);  GUI_DispStringHCenterAt("Exit",  65, 230);  GUI_DispStringHCenterAt("Up",   160, 230);  GUI_DispStringHCenterAt("Down", 255, 230);  /* Create the listbox */  hListBox = LISTBOX_Create(_aListBox, 100, 100, 120, 75, WM_CF_SHOW);  WM_SetFocus(hListBox);  LISTBOX_SetFont(hListBox, &GUI_Font13B_1);  SCROLLBAR_CreateAttached(hListBox, SCROLLBAR_CF_VERTICAL);  /* Handle the listbox */  while (!_Ready) {    GUI_Delay(10);  }  /* Delete listbox widget */  LISTBOX_Delete(hListBox);  GUI_Clear();}

void GUIDEMO_ShowIntro(const char * s, const char * sExp) {  GUI_CONTEXT ContextOld;  GUI_SaveContext(&ContextOld);  _sInfo = s;  _sExplain = sExp;  GUI_SetDefault();  GUIDEMO_HideInfoWin();  GUI_SetBkColor(GUI_BLUE);  GUI_SetColor(GUI_WHITE);  GUI_Clear();  //GUI_SetFont(&GUI_FontComic18B_ASCII);  GUI_SetFont(&GUI_FontHZ12);  GUI_DispStringHCenterAt(s, LCD_GET_XSIZE() / 2, LCD_GET_YSIZE() / 3 - 10);  if (_sExplain) {    GUI_SetFont(&GUI_Font8_ASCII);    GUI_DispStringHCenterAt(_sExplain, LCD_GET_XSIZE() / 2, LCD_GET_YSIZE() / 2 - 10);  }  GUIDEMO_Delay(_sExplain ? 2000 : 4000);#if GUI_WINSUPPORT  _UpdateInfoWin();  _UpdateCmdWin();#endif  GUI_RestoreContext(&ContextOld);  #if GUI_WINSUPPORT    WM_ExecIdle();  #endif  GUIDEMO_NotifyStartNext();  GUI_SetBkColor(GUI_RED);  GUI_Clear();}

/*********************************************************************       _DemoAntialiasing  Draws lines with different antialiasing factors*/static void _DemoAntialiasing(void) {  int i, x1, x2, y1, y2;  const GUI_FONT *font_old;  y1 = 65;  y2 = 5;  /* Set drawing attributes */  GUI_SetColor(GUI_WHITE);  GUI_SetBkColor(GUI_BLACK);  GUI_SetPenShape(GUI_PS_FLAT);  GUI_Clear();  /* draw headline */  font_old = GUI_SetFont(&GUI_Font24_ASCII);  GUI_SetTextAlign(GUI_TA_HCENTER);  GUI_DispStringAt("AA_Lines - Sample", 160, 5);  /* Draw lines without antialiased */  GUI_Delay(1000);  GUI_SetFont(&GUI_Font8x16);  GUI_SetTextAlign(GUI_TA_LEFT);  GUI_DispStringAtCEOL("draw normal lines using", 5, 40);  GUI_DispStringAtCEOL("GUI_DrawLine", 5, 55);  GUI_Delay(2500);  x1 = 20;  x2 = 100;  GUI_SetFont(font_old);  GUI_DispStringHCenterAt("Normal", (x1 + x2) / 2, 30 + y1);  for (i = 1; i < 8; i++) {    GUI_SetPenSize(i);    GUI_DrawLine(x1, 40 + i * 15 + y1, x2, 40 + i * 15 + y1 + y2);  }  /* Draw lines with antialiasing quality factor 2 */  GUI_Delay(3000);  GUI_SetFont(&GUI_Font8x16);  GUI_DispStringAtCEOL("", 5, 40);  GUI_DispStringAtCEOL("", 5, 55);  GUI_Delay(200);  GUI_DispStringAtCEOL("draw antialiased lines using", 5, 40);  GUI_DispStringAtCEOL("GUI_AA_DrawLine", 5, 55);  GUI_Delay(3500);  x1 = 120;  x2 = 200;  GUI_AA_SetFactor(2);  GUI_SetFont(font_old);  GUI_DispStringHCenterAt("Antialiased/nusing factor 2", (x1 + x2) / 2, 30 + y1);  for (i = 1; i < 8; i++) {    GUI_SetPenSize(i);    GUI_AA_DrawLine(x1, 40 + i * 15 + y1, x2, 40 + i * 15 + y1 + y2);  }  /* Draw lines with antialiasing quality factor 6 */  GUI_Delay(1500);  x1 = 220;  x2 = 300;  GUI_AA_SetFactor(6);  GUI_SetFont(font_old);  GUI_DispStringHCenterAt("Antialiased/nusing factor 6", (x1 + x2) / 2, 30 + y1);  for (i = 1; i < 8; i++) {    GUI_SetPenSize(i);    GUI_AA_DrawLine(x1, 40 + i * 15 + y1, x2, 40 + i * 15 + y1 + y2);  }  GUI_Delay(7500);}

/*********************************************************************       _DrawJPEGS** Iterates over all JPEG files of a directory*/static void _DrawJPEGS(void) {  WIN32_FIND_DATA Context;  static char     acPath[_MAX_PATH];  HANDLE          hFind;  char            acMask[_MAX_PATH];  char            acFile[_MAX_PATH];  char            acBuffer[_MAX_PATH];  GUI_SetBkColor(GUI_BLACK);  GUI_Clear();  GUI_SetColor(GUI_WHITE);  GUI_SetFont(&GUI_Font24_ASCII);  GUI_DispStringHCenterAt("Drawing scaled JPEGs - Sample", 160, 5);  GetWindowsDirectory(acBuffer, sizeof(acBuffer));  _GetFirstBitmapDirectory(acBuffer, acPath);  GUI_SetFont(&GUI_Font8x16);  sprintf(acMask, "%s*.jp*", acPath);  hFind = FindFirstFile(acMask, &Context);  if (hFind != INVALID_HANDLE_VALUE) {    do {      sprintf(acFile, "%s%s", acPath, Context.cFileName);      GUI_DispStringAtCEOL(acFile, 5, 40);      _DrawJPEG(acFile);    } while (FindNextFile(hFind, &Context));  } else {    GUI_DispStringHCenterAt("No JPEG files found!", 160, 60);    GUI_Delay(2000);  }}

/*********************************************************************       _ShowComments** Shows all comments of a GIF file*/static void _ShowComments(const char * pFile, int FileSize) {  GUI_RECT Rect          = {80, 100, 239, 199};  char     acBuffer[256] = {0};  int      CommentCnt;  /* Display sample information */  GUI_SetFont(&GUI_Font8x16);  GUI_ClearRect(0, 40, 319, 59);  GUI_DispStringHCenterAt("Show all comments of a GIF file", 160, 40);  /* Show all comments */  GUI_ClearRect(0, 60, 319, 239);                                 /* Clear the image area */  CommentCnt = 0;  while (!GUI_GIF_GetComment(pFile, FileSize, (unsigned char *)acBuffer, sizeof(acBuffer), CommentCnt)) {    char acNumber[12] = "Comment #0:";    acNumber[9] = '0' + CommentCnt;    GUI_DispStringHCenterAt(acNumber, 160, 80);    GUI_SetBkColor(GUI_BLACK);    GUI_SetColor(GUI_WHITE);    GUI_ClearRectEx(&Rect);    GUI_DispStringInRectWrap(acBuffer, &Rect, GUI_TA_HCENTER | GUI_TA_VCENTER, GUI_WRAPMODE_WORD);    GUI_SetBkColor(GUI_WHITE);    GUI_SetColor(GUI_BLACK);    GUI_Delay(4000);                                              /* Wait a while */    CommentCnt++;  }}

void GUIDEMO_Intro(void) {  int xCenter = LCD_GET_XSIZE() / 2;  int y;  char acText[50] = "Version of 
C++ GUI_DrawBitmap函数代码示例
C++ GUI_DispStringAt函数代码示例