xOS v0.07 -- testing needed!

[monobogdan]

Looks nice

Is checkbox/combobox/multiline textbox controls implemented, or it's only showcase?

Thanks!
No, the only components implemented at the moment are label, button and gbutton (which is basically a button whose look can be enhanced). The text box is my next coming priority, and then the list box, as both are needed for the file manager I have in mind, and the text box is the main thing in a text editor as well.

Implementing textbox is easy.

You simply need add chars to textbuffer.

Some example code:

Code: Select all

int x;
int y;
string str;

void process(int keychar) {
  if(keychar != vk_return & keychar != vk_escape & keychar != vk_control & keychar != vk_space) {
    str += (char)keychar;
  }
  if(keychar == vk_backspace) {
    str = str.remove(str.length, 1);
  }
}

void draw() {
  drawstr(x, y, str);
}

[BrightLight]

Implementing textbox is easy.

You simply need add chars to textbuffer.

You also need to handle line overflows/text wrapping, select all, some copy/paste mechanism, arrow keys and cursor position, etc...

[monobogdan]

Implementing textbox is easy.

You simply need add chars to textbuffer.

You also need to handle line overflows/text wrapping, select all, some copy/paste mechanism, arrow keys and cursor position, etc...

Code: Select all

int MAX_STR = 255;
int x;
int y;
string str;

void process(int keychar) {
  if(keychar != vk_return & keychar != vk_escape & keychar != vk_control & keychar != vk_space & str.length() < MAX_STR) {
    str += (char)keychar;
  }
  if(keychar == vk_backspace) {
    if(str.length() > 0) {
      str = str.remove(str.length, 1);
    }
  }

}

void draw() {
  drawstr(x, y, str);
}

[dozniak]

Code: Select all

void process(int keychar) {
  if(keychar != vk_return & keychar != vk_escape & keychar != vk_control & keychar != vk_space & str.length() < MAX_STR) {
    str += (char)keychar;
  }
  if(keychar == vk_backspace) {
    if(str.length() > 0) {
      str = str.remove(str.length, 1);
    }
  }

}

void draw() {
  drawstr(x, y, str);
}

You also need to handle ...text wrapping,

No handling in this code.

select all,

No handling in this code.

some copy/paste mechanism

No handling in this code.

, arrow keys and cursor position,

No handling in this code.

etc...

Error in your code: when you press backspace it will be added to the string first, and then removed from the string, so the string itself will remain unchanged. Error #2: you cannot enter spaces into the string.

[BrightLight]

No handling in this code.

Anyways, my OS is written in assembly, and I'm going to implement the text box in assembly, so either way I cannot use this code.

[monobogdan]

Error in your code: when you press backspace it will be added to the string first, and then removed from the string, so the string itself will remain unchanged. Error #2: you cannot enter spaces into the string.

You can enter spaces.

It's sample code for example.

OP, why you not write applications in C, Pascal or anything?

[BrightLight]

OP, why you not write applications in C, Pascal or anything?

I will write a C library for my OS to let users have a "standard" way of writing applications, but in my early stages such as I am in now, it's unlikely anyone would write anything for me. In fact, it's unlikely anyone would write anything for anyone else on this forum, and so it's not high in my to-do list.

[dozniak]

Error in your code: when you press backspace it will be added to the string first, and then removed from the string, so the string itself will remain unchanged. Error #2: you cannot enter spaces into the string.

You can enter spaces.

I'm pretty sure you can not with the code you posted.

Code: Select all

& keychar != vk_space

[MichaelFarthing]

monobogdan,

Though far too polite to tell you so directly, Omarxx is miles ahead of you in his understanding of what is needed.
There is an English saying, "Trying to teach your grandmother to suck eggs" which roughly means that you are a relative beginner trying to give unnecessary lessons to an experienced person.