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Home » Developing U++ » U++ Developers corner » GET KEY STATE for Linux and win32
| GET KEY STATE for Linux and win32 [message #23240] |
Fri, 02 October 2009 11:49  |
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Hello All!
I was implemented an interesting method for get key state:
The code like this:
bool get_key_state(dword p_k){
#ifdef PLATFORM_WIN32
//... Here need to optimize
if(p_k & 0xffff)
return (((char)::GetKeyState(p_k & 0xffff)) & 128);
if(p_k & K_ALT)
return GetAlt();
if(p_k & K_SHIFT)
return GetShift();
if(p_k & K_CTRL)
return GetCtrl();
#elif PLATFORM_X11
char key_map_stat[32];
XQueryKeymap(Xdisplay, key_map_stat);
if(p_k & 0xffff){
KeyCode k_code = XKeysymToKeycode(Xdisplay, p_k & 0xffff);
return ((key_map_stat[k_code >> 3] >> (k_code & 7)) & 1);
}
if(p_k & K_ALT){
const KeyCode alt_l = XKeysymToKeycode(Xdisplay,XK_Alt_L);
const KeyCode alt_r = XKeysymToKeycode(Xdisplay,XK_Alt_R);
return (((key_map_stat[alt_l >> 3] >> (alt_l & 7)) & 1)
||((key_map_stat[alt_r >> 3] >> (alt_r & 7)) & 1));
}
if(p_k & K_SHIFT){
const KeyCode shift_l = XKeysymToKeycode(Xdisplay,XK_Shift_L);
const KeyCode shift_r = XKeysymToKeycode(Xdisplay,XK_Shift_R);
return (((key_map_stat[shift_l >> 3] >> (shift_l & 7)) & 1)
||((key_map_stat[shift_r >> 3] >> (shift_r & 7)) & 1));
}
if(p_k & K_CTRL){
const KeyCode control_l = XKeysymToKeycode(Xdisplay,XK_Control_L);
const KeyCode control_r = XKeysymToKeycode(Xdisplay,XK_Control_R);
return (((key_map_stat[control_l >> 3] >> (control_l & 7)) & 1)
||((key_map_stat[control_r >> 3] >> (control_r & 7)) & 1));
}
#else
//ASSERT_(false, "Get key state is not implemented for this plathform")
#endif
return false;
}
It is first variant for get key state.
This method is missing in U++.
Any comments are welcome.
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| Re: GET KEY STATE for Linux and win32 [message #23241 is a reply to message #23240] |
Fri, 02 October 2009 12:40  |
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mirek
Messages: 13975
Registered: November 2005
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Ultimate Member |
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| tojocky wrote on Fri, 02 October 2009 05:49 |
Hello All!
I was implemented an interesting method for get key state:
The code like this:
bool get_key_state(dword p_k){
#ifdef PLATFORM_WIN32
//... Here need to optimize
if(p_k & 0xffff)
return (((char)::GetKeyState(p_k & 0xffff)) & 128);
if(p_k & K_ALT)
return GetAlt();
if(p_k & K_SHIFT)
return GetShift();
if(p_k & K_CTRL)
return GetCtrl();
#elif PLATFORM_X11
char key_map_stat[32];
XQueryKeymap(Xdisplay, key_map_stat);
if(p_k & 0xffff){
KeyCode k_code = XKeysymToKeycode(Xdisplay, p_k & 0xffff);
return ((key_map_stat[k_code >> 3] >> (k_code & 7)) & 1);
}
if(p_k & K_ALT){
const KeyCode alt_l = XKeysymToKeycode(Xdisplay,XK_Alt_L);
const KeyCode alt_r = XKeysymToKeycode(Xdisplay,XK_Alt_R);
return (((key_map_stat[alt_l >> 3] >> (alt_l & 7)) & 1)
||((key_map_stat[alt_r >> 3] >> (alt_r & 7)) & 1));
}
if(p_k & K_SHIFT){
const KeyCode shift_l = XKeysymToKeycode(Xdisplay,XK_Shift_L);
const KeyCode shift_r = XKeysymToKeycode(Xdisplay,XK_Shift_R);
return (((key_map_stat[shift_l >> 3] >> (shift_l & 7)) & 1)
||((key_map_stat[shift_r >> 3] >> (shift_r & 7)) & 1));
}
if(p_k & K_CTRL){
const KeyCode control_l = XKeysymToKeycode(Xdisplay,XK_Control_L);
const KeyCode control_r = XKeysymToKeycode(Xdisplay,XK_Control_R);
return (((key_map_stat[control_l >> 3] >> (control_l & 7)) & 1)
||((key_map_stat[control_r >> 3] >> (control_r & 7)) & 1));
}
#else
//ASSERT_(false, "Get key state is not implemented for this plathform")
#endif
return false;
}
It is first variant for get key state.
This method is missing in U++.
Any comments are welcome.
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What is wrong with
bool GetShift();
bool GetCtrl();
bool GetAlt();
bool GetCapsLock();
bool GetMouseLeft();
bool GetMouseRight();
bool GetMouseMiddle();
?
(But a nice find anyway...)
Mirek
[Updated on: Fri, 02 October 2009 12:41] Report message to a moderator |
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| Re: GET KEY STATE for Linux and win32 [message #23243 is a reply to message #23242] |
Fri, 02 October 2009 13:11 |
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The second variant of code is:
bool get_key_state(dword p_k){
bool result;
#ifdef PLATFORM_WIN32
result = true;
//... Here need to optimize
if(p_k & 0xffff)
result &= (bool)(((char)::GetKeyState(p_k & 0xffff)) & 128);
if((result)&&(p_k & K_ALT))
result &= GetAlt();
if((result)&&(p_k & K_SHIFT))
result &= GetShift();
if((result)&&(p_k & K_CTRL))
result &= GetCtrl();
#elif PLATFORM_X11
result = true;
char key_map_stat[32];
XQueryKeymap(Xdisplay, key_map_stat);
if(p_k & 0xffff){
KeyCode k_code = XKeysymToKeycode(Xdisplay, p_k & 0xffff);
result &= ((key_map_stat[k_code >> 3] >> (k_code & 7)) & 1);
}
if((result)&&(p_k & K_ALT)){
const KeyCode alt_l = XKeysymToKeycode(Xdisplay,XK_Alt_L);
const KeyCode alt_r = XKeysymToKeycode(Xdisplay,XK_Alt_R);
result &= (((key_map_stat[alt_l >> 3] >> (alt_l & 7)) & 1)
||((key_map_stat[alt_r >> 3] >> (alt_r & 7)) & 1));
}
if((result)&&(p_k & K_SHIFT)){
const KeyCode shift_l = XKeysymToKeycode(Xdisplay,XK_Shift_L);
const KeyCode shift_r = XKeysymToKeycode(Xdisplay,XK_Shift_R);
result &= (((key_map_stat[shift_l >> 3] >> (shift_l & 7)) & 1)
||((key_map_stat[shift_r >> 3] >> (shift_r & 7)) & 1));
}
if((result)&&(p_k & K_CTRL)){
const KeyCode control_l = XKeysymToKeycode(Xdisplay,XK_Control_L);
const KeyCode control_r = XKeysymToKeycode(Xdisplay,XK_Control_R);
result &= (((key_map_stat[control_l >> 3] >> (control_l & 7)) & 1)
||((key_map_stat[control_r >> 3] >> (control_r & 7)) & 1));
}
#else
result = false;
//ASSERT_(false, "Get key state is not implemented for this platform")
#endif
return result;
}
This will process correct:
if(get_key_state(K_CTRL_C)){
..................// add our code
}
Mirek, is it useful to add in U++?
[Updated on: Fri, 02 October 2009 13:16] Report message to a moderator |
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| Re: GET KEY STATE for Linux and win32 [message #24554 is a reply to message #23243] |
Sun, 24 January 2010 10:51 |
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Hello Mirek,
I have not feedback about my propose!
| tojocky wrote on Fri, 02 October 2009 14:11 |
The second variant of code is:
bool get_key_state(dword p_k){
bool result;
#ifdef PLATFORM_WIN32
result = true;
//... Here need to optimize
if(p_k & 0xffff)
result &= (bool)(((char)::GetKeyState(p_k & 0xffff)) & 128);
if((result)&&(p_k & K_ALT))
result &= GetAlt();
if((result)&&(p_k & K_SHIFT))
result &= GetShift();
if((result)&&(p_k & K_CTRL))
result &= GetCtrl();
#elif PLATFORM_X11
result = true;
char key_map_stat[32];
XQueryKeymap(Xdisplay, key_map_stat);
if(p_k & 0xffff){
KeyCode k_code = XKeysymToKeycode(Xdisplay, p_k & 0xffff);
result &= ((key_map_stat[k_code >> 3] >> (k_code & 7)) & 1);
}
if((result)&&(p_k & K_ALT)){
const KeyCode alt_l = XKeysymToKeycode(Xdisplay,XK_Alt_L);
const KeyCode alt_r = XKeysymToKeycode(Xdisplay,XK_Alt_R);
result &= (((key_map_stat[alt_l >> 3] >> (alt_l & 7)) & 1)
||((key_map_stat[alt_r >> 3] >> (alt_r & 7)) & 1));
}
if((result)&&(p_k & K_SHIFT)){
const KeyCode shift_l = XKeysymToKeycode(Xdisplay,XK_Shift_L);
const KeyCode shift_r = XKeysymToKeycode(Xdisplay,XK_Shift_R);
result &= (((key_map_stat[shift_l >> 3] >> (shift_l & 7)) & 1)
||((key_map_stat[shift_r >> 3] >> (shift_r & 7)) & 1));
}
if((result)&&(p_k & K_CTRL)){
const KeyCode control_l = XKeysymToKeycode(Xdisplay,XK_Control_L);
const KeyCode control_r = XKeysymToKeycode(Xdisplay,XK_Control_R);
result &= (((key_map_stat[control_l >> 3] >> (control_l & 7)) & 1)
||((key_map_stat[control_r >> 3] >> (control_r & 7)) & 1));
}
#else
result = false;
//ASSERT_(false, "Get key state is not implemented for this platform")
#endif
return result;
}
This will process correct:
if(get_key_state(K_CTRL_C)){
..................// add our code
}
Mirek, is it useful to add in U++?
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