Is there a Scan Code function?

[Bytecroc]

For Keyboard Input I can not found a way to get german umlaut like "ä,ö,ü,Ä,Ö,Ü,ß" also the Left- and right- Alt Key I am missing in the Keylist.

 

I miss in the API- Reference a function to get the scancode from a keypress.

[Undac]

As far as I know, no, but you can fix this if you know the code of the key you want to use. Let's suppose that you are looking for key 1 (/exclamation mark, above Q), which would have the key code 49. Well, you can either use this value when you call the function

for example: window->KeyHit(49);

or open the external dependencies filter, go to Key.h and add it in the class

static const int KeyOne = 49;

...

window->KeyHit(Key::KeyOne);

 

//it would actually be advised to write your own Key class in case you want to share the code

 

I think that the issues with Alt key in windowed mode are related to the fact that it triggers the cascade menu.

[Athos]

It seems the Key class is a Virtual-Code list. Not Scancodes;

I suggest you to read About Keyboard Input (Windows) msdn.

 

One way I know of getting such inputs is by replacing the leadwerks window's wndproc with your own. Process the events you need, then call Leadwerks::WndProc();

[Bytecroc]

Thank you Undac and Athos for your answers and suggestions,

 

my WinAPI knowledge to replacing the windows wndproc with an own procedure is a bit to low

but the WinAPI did have some nice functions I tested.

 

This one works for the first.

It registers all Keys and also the mousebuttons

 

I think this are also not scancodes but I can make a list for each user to register his own keys.

Or receiving letters for input messages, like in a chat.

 

possibly replace the "comic.ttf" with "arial.ttf"

#include "App.h"
using namespace Leadwerks;
App::App() : window(NULL), context(NULL), world(NULL), camera(NULL) {}
App::~App() { delete world; delete window; }
bool App::Start()
{
window = Window::Create();
context = Context::Create(window);
Font* font = Font::Load("Fonts/Comic.ttf", 36, Font::Smooth);
context->SetFont(font);
font->Release();
return true;
}
bool App::Loop()
{
if (window->Closed() || window->KeyDown(Key::Escape)) return false;
context->SetColor(0, 0, 0);
context->Clear();
context->SetColor(1, 1, 1);
//Display some centered text
std::string text;
BYTE keys[256];
//GetKeyState(0);
GetKeyboardState(keys);
for (int i=0; i < 255; i++)
{
if (keys[i] & 0x80)
{
text += String(i);
keys[i] = 0;
//break; //yes or no? The numbers for the right ALT Key and others are lower with break.
}
}
Font* font = context->GetFont();
int screenwidth = context->GetWidth();
int screenheight = context->GetHeight();
int x = (screenwidth - font->GetTextWidth(text)) / 2;
int y = (screenheight - font->GetHeight()) / 2;
context->SetBlendMode(Blend::Alpha);
context->DrawText(text, x, y);
context->SetBlendMode(Blend::Solid);
context->Sync();
return true;
}

[Bytecroc]

Extended to translate also in ScanCode

 

#include "App.h"
using namespace Leadwerks;
App::App() : window(NULL), context(NULL), world(NULL), camera(NULL) {}
App::~App() { delete world; delete window; }
unsigned long VKtoSC(unsigned long virtual_key)
{
return (static_cast<unsigned long>(::MapVirtualKeyEx(virtual_key, 4, ::GetKeyboardLayout(::GetCurrentThreadId()))));
}
bool App::Start()
{
window = Window::Create();
context = Context::Create(window);
Font* font = Font::Load("Fonts/Comic.ttf", 36, Font::Smooth);
context->SetFont(font);
font->Release();
return true;
}
bool App::Loop()
{
if (window->Closed() || window->KeyDown(Key::Escape)) return false;
context->SetColor(0, 0, 0);
context->Clear();
context->SetColor(1, 1, 1);
//Display some centered text
std::string text;
std::string text2;
int sc;
BYTE keys[256];
//GetKeyState(0);
GetKeyboardState(keys);
for (int i=0; i < 255; i++)
{
 if (keys[i] & 0x80)
 {
  text = "VirtualKeyCode: " + String(i);
  sc = VKtoSC(i);
  text2 = "ScanCode: " + String(sc);
  //keys[i] = 0;
  //break;
 }
}
Font* font = context->GetFont();
int screenwidth = context->GetWidth();
int screenheight = context->GetHeight();
int x = (screenwidth - font->GetTextWidth(text)) / 2;
int y = (screenheight - font->GetHeight()) / 2;
context->SetBlendMode(Blend::Alpha);
context->DrawText(text, x, y);
context->DrawText(text2, x, y+50);
context->SetBlendMode(Blend::Solid);
context->Sync();
return true;
}

[Undac]

It seems that I totally misunderstood what you wanted in the first place (a generic scan, not only to add your specific special keys). Glad to see that you solved it.

[Bytecroc]

It's because english is not my natural language and I can not explain like I would do in my natural language what the problem 100% is.

Sometimes there are hidden functions or functions I have not detected inside Leadwerks, and before I use WinAPI things I thought I ask in forum.

For single key query there is GetKeyState() or GetAsyncKeyState() a better choice.