Thread: [PDcurses] Handle pressed button

Hello.
Here is a little code that i wrote with using Pdcurses library.

Code:

int main()
{


	WINDOW *pad;
	WINDOW *input_window;	
	
	int	height = 1;
	int	width = 77;
	int	starty = 26;	
	int	startx = 0;

	int line = 0;

	initscr();
	cbreak();

	// Pad (pad) Properties
	pad = newpad(100,80);
	scrollok(pad,TRUE);
	prefresh( pad, 0, 0, 0, 0, LINES-1, COLS-1);

	// Input window (input_window) properties
	input_window = newwin(height,width,starty,startx);
	touchwin(input_window);
	keypad(input_window,TRUE);
	start_color();
	init_pair(1,COLOR_WHITE, COLOR_RED);
	wbkgd(input_window,COLOR_PAIR(1));
	wmove(input_window,1,1); // Moves the cursor into the "input_window"
	wrefresh(input_window);


	while(TRUE)
	{
		if(wgetstr(input_window,chars) != ERR)
		{
			mvwprintw(pad,line,0,"%s\n",chars);
			line++;
			prefresh( pad, z, 0, 0, 0, LINES-1,COLS-1);
			werase(input_window);
			wmove(input_window,1,1);
			memset(chars,0,sizeof(chars));
			wrefresh(input_window);
		}
	}

endwin();
return 0;
}

As you can understand this code creates a window and a pad. Whatever user writes and then press Enter button appears into pad.

Now i want to make this code to understand when user press the Page Up button e.g and print out in the pad "Page Up key pressed" without the user to has to press enter button .

Thought to use GetAsyncKeyState function but i want to hear your ideas.

Any help is welcomed.

Thanks in advance

I tried this and it seems that works but it needs some changes i believe.

Code:

int main()
{

	HANDLE         stdinInput = 0;
	DWORD          numEvents = 0;
	DWORD          numEventsRead = 0;
	DWORD		   numReceivedRecords = 0;
	DWORD		   fdwSaveOldMode;
	DWORD          fdwMode;

	WINDOW *pad;
	WINDOW *input_window;	

	char   dataBuffer[100];
	int    bufferLen = 0;
	
	int	height = 1;
	int	width = 77;
	int	starty = 26;	
	int	startx = 0;

	int line = 0;

	stdinInput = GetStdHandle(STD_INPUT_HANDLE);

	if (stdinInput == INVALID_HANDLE_VALUE) 
			perror("GetStdHandle");

	if (! GetConsoleMode(stdinInput, &fdwSaveOldMode) ) 
			perror("GetConsoleMode");

	fdwMode = ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT;
	if (! SetConsoleMode(stdinInput, fdwMode) ) 
			perror("SetConsoleMode"); 

	initscr();
	cbreak();

	// Pad (pad) Properties
	pad = newpad(100,80);
	scrollok(pad,TRUE);
	prefresh( pad, 0, 0, 0, 0, LINES-1, COLS-1);

	// Input window (input_window) properties
	input_window = newwin(height,width,starty,startx);
	touchwin(input_window);
	keypad(input_window,TRUE);
	start_color();
	init_pair(1,COLOR_WHITE, COLOR_RED);
	wbkgd(input_window,COLOR_PAIR(1));
	wmove(input_window,1,1);
	wrefresh(input_window);


	while(TRUE)
	{
		GetNumberOfConsoleInputEvents(stdinInput, &numEvents);
  
	   if (numEvents != 0) {
    
		   INPUT_RECORD eventBuffer;
    
		  ReadConsoleInputA(stdinInput, &eventBuffer, 1, &numEventsRead);
 
          
			if (eventBuffer.EventType == KEY_EVENT) {

				if(eventBuffer.Event.KeyEvent.bKeyDown)
				{
					if(eventBuffer.Event.KeyEvent.wVirtualKeyCode != VK_PRIOR && eventBuffer.Event.KeyEvent.wVirtualKeyCode != VK_NEXT )
					{
					
						if(wgetstr(input_window,dataBuffer) != ERR)
						{
							mvwprintw(pad,line,0,"%s\n",dataBuffer);
							line++;
							prefresh( pad, 0, 0, 0, 0, LINES-1,COLS-1);
							werase(input_window);
							wmove(input_window,1,1);

						}
					}

					if(eventBuffer.Event.KeyEvent.wVirtualKeyCode == VK_PRIOR)
					{
						printw("Page Up Pressed\n");
						refresh();
					}

					if(eventBuffer.Event.KeyEvent.wVirtualKeyCode == VK_NEXT)
					{
						printw("Page Down Pressed\n");
						refresh();
					}
				
					
				}
			}
     
		}
		Sleep(10);
	}

	//getch();
	endwin();
	return 0;
}