Typing and printing again issues
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Code:

#include <fxcg/display.h>
#include <fxcg/keyboard.h>
#include <fxcg/rtc.h>
#include <fxcg/system.h>
#include <stdlib.h>
#include <string.h>

#define MENU_MATRIX_CODE 0x0409
#define EXE_MATRIX_CODE  0x0302

int flashState = 0;

void flashRealIcon(void) {
  flashState = !flashState;
  DefineStatusAreaFlags(flashState ? 4 : 5, SAF_SETUP_COMPLEX_MODE, NULL, NULL);
  DisplayStatusArea();
  Bdisp_PutDisp_DD();
}

void drawRightAligned(int y, const char* text) {
  int len = strlen(text);
  int px = 384 - len * 12;
  PrintXY(px / 6, y, text, TEXT_MODE_NORMAL, TEXT_COLOR_WHITE);
}

void main(void) {
  char *buffer = (char *)malloc(256);
  buffer[0] = '\0';
  int start = 0;
  int cursor = 0;

  char* history[8] = { NULL };
  int lineCount = 0;

  DrawFrame(0);
  DisplayMBString((unsigned char *)buffer, start, cursor, 1, 1);
  Bdisp_PutDisp_DD();

  char timerID = Timer_Install(0, flashRealIcon, 780);
  if (timerID != -1)
    Timer_Start(timerID);

  while (1) {
    int key = 0;
    int result = GetKey(&key);

    int col = (key >> 8) & 0xFF;
    int row = key & 0xFF;
    unsigned short matrixCode = (col << 8) | row;

    if (matrixCode == MENU_MATRIX_CODE) {
      break;
    }

    if (matrixCode == EXE_MATRIX_CODE) {
      if (lineCount < 8 && strlen(buffer) > 0) {
        history[lineCount] = strdup(buffer); 
        lineCount++;
        buffer[0] = '\0'; 
        cursor = 0;
        start = 0;
      }
    } else if (result == 1 && key < 30000) {
      cursor = EditMBStringChar((unsigned char *)buffer, 256, cursor, key);
    } else {
      EditMBStringCtrl((unsigned char *)buffer, 256, &start, &cursor, &key, 1, 1 + lineCount);
    }

    Bdisp_AllClr_VRAM();
    DrawFrame(0);


    for (int i = 0; i < lineCount; i++) {
      drawRightAligned(1 + i, history[i]);
    }

 
    DisplayMBString((unsigned char *)buffer, start, cursor, 1, 1 + lineCount);

    DisplayStatusArea();
    Bdisp_PutDisp_DD();
  }

  for (int i = 0; i < lineCount; i++) free(history[i]);
  free(buffer);
  Bdisp_AllClr_VRAM();
  Bdisp_PutDisp_DD();
}


This is code has Real flashing and a black frame and has basic text input however what I am trying to achieve is that by clicking EXE it re prints what I originally wrote in my first line back down one line below on the rightmost side however upon clicking EXE nothing happens.

Any help/guidance on the issue appreciated.
critical wrote:

This is code has Real flashing and a black frame and has basic text input however what I am trying to achieve is that by clicking EXE it re prints what I originally wrote in my first line back down one line below on the rightmost side however upon clicking EXE nothing happens.

Any help/guidance on the issue appreciated.


There's a few issues with the design here:
1. Have a look at the documentation for PrintXY: https://prizm.cemetech.net/Syscalls/PrintXY/
Coordinates for PrintXY aren't in pixels, the colour is the foreground colour not background, and the text should be prepended with two spaces. So, drawRightAligned should be:

Code:
void drawRightAligned(int y, const char *text) {
  int len = strlen(text) - 2; // Ignore two spaces at start
  PrintXY(21 - len, y, text, TEXT_MODE_NORMAL, TEXT_COLOR_BLACK);
}


2. Given the two spaces needed, your history insertion code should be:

Code:
char *historyBuf = (char *)malloc(strlen(buffer) + 3); // + 1 '\0' + 2 spaces
historyBuf[0] = ' ';
historyBuf[1] = ' ';
strcpy(historyBuf + 2, buffer);

history[lineCount] = historyBuf;

lineCount++;
buffer[0] = '\0';
cursor = 0;
start = 0;


3. There's no need to use matrix codes here. GetKey keys are easily interfaced with:

Code:
int charKey = GetKey(&key);

if (key == KEY_CTRL_EXE && lineCount < 8 && strlen(buffer) > 0) {
  char *historyBuf = (char *)malloc(strlen(buffer) + 3);
  historyBuf[0] = ' ';
  historyBuf[1] = ' ';
  strcpy(historyBuf + 2, buffer);

  history[lineCount] = historyBuf;

  lineCount++;
  buffer[0] = '\0';
  cursor = 0;
  start = 0;
} else if (charKey == 1) {
  cursor = EditMBStringChar((unsigned char *)buffer, 256, cursor, key);
} else {
  EditMBStringCtrl((unsigned char *)buffer, 256, &start, &cursor, &key, 1,
                    1 + lineCount);
}


All put together results in:

Code:
#include <fxcg/display.h>
#include <fxcg/keyboard.h>
#include <fxcg/rtc.h>
#include <fxcg/system.h>
#include <stdlib.h>
#include <string.h>

int flashState = 0;

void flashRealIcon(void) {
  flashState = !flashState;
  DefineStatusAreaFlags(flashState ? 4 : 5, SAF_SETUP_COMPLEX_MODE, NULL, NULL);
  DisplayStatusArea();
  Bdisp_PutDisp_DD();
}

void drawRightAligned(int y, const char *text) {
  int len = strlen(text) - 2; // Ignore two spaces at start
  PrintXY(21 - len, y, text, TEXT_MODE_NORMAL, TEXT_COLOR_BLACK);
}

void main(void) {
  char *buffer = (char *)malloc(256);
  buffer[0] = '\0';

  int start = 0;
  int cursor = 0;
  int key = 0;

  char *history[8] = {NULL};
  int lineCount = 0;

  DrawFrame(0);
  DisplayMBString((unsigned char *)buffer, start, cursor, 1, 1);
  Bdisp_PutDisp_DD();

  char timerID = Timer_Install(0, flashRealIcon, 780);
  if (timerID != -1)
    Timer_Start(timerID);

  while (1) {
    int charKey = GetKey(&key);

    if (key == KEY_CTRL_EXE && lineCount < 8 && strlen(buffer) > 0) {
      char *historyBuf = (char *)malloc(strlen(buffer) + 3);
      historyBuf[0] = ' ';
      historyBuf[1] = ' ';
      strcpy(historyBuf + 2, buffer);

      history[lineCount] = historyBuf;

      lineCount++;
      buffer[0] = '\0';
      cursor = 0;
      start = 0;
    } else if (charKey == 1) {
      cursor = EditMBStringChar((unsigned char *)buffer, 256, cursor, key);
    } else {
      EditMBStringCtrl((unsigned char *)buffer, 256, &start, &cursor, &key, 1,
                       1 + lineCount);
    }

    Bdisp_AllClr_VRAM();
    DrawFrame(0);

    for (int i = 0; i < lineCount; i++) {
      drawRightAligned(1 + i, history[i]);
    }

    DisplayMBString((unsigned char *)buffer, start, cursor, 1, 1 + lineCount);
    DisplayStatusArea();
    Bdisp_PutDisp_DD();
  }

  for (int i = 0; i < lineCount; i++)
    free(history[i]);

  free(buffer);
  Bdisp_AllClr_VRAM();
  Bdisp_PutDisp_DD();
}
Thanks for the help
  
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