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Robert de Bath's `Patch.a_alt_key': clean up the handling of

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Alt-Space, Alt-only and the System menu. It lets Windows do more of
the work, and also saves a static variable, so it must be good :-)

[originally from svn r1237]
This commit is contained in:
Simon Tatham 2001-09-07 21:39:03 +00:00
parent 8e58b47df2
commit f1c2f2fcf0
1 changed files with 22 additions and 16 deletions
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38
window.c
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@ -1493,6 +1493,17 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
case IDM_ABOUT:
showabout(hwnd);
break;
case SC_KEYMENU:
/*
* We get this if the System menu has been activated.
* This might happen from within TranslateKey, in which
* case it really wants to be followed by a `space'
* character to actually _bring the menu up_ rather
* than just sitting there in `ready to appear' state.
*/
if( lParam == 0 )
PostMessage(hwnd, WM_CHAR, ' ', 0);
break;
default:
if (wParam >= IDM_SAVED_MIN && wParam <= IDM_SAVED_MAX) {
SendMessage(hwnd, WM_SYSCOMMAND, IDM_SAVEDSESS, wParam);
@ -2294,7 +2305,6 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
int scan, left_alt = 0, key_down, shift_state;
int r, i, code;
unsigned char *p = output;
static int alt_state = 0;
static int alt_sum = 0;
HKL kbd_layout = GetKeyboardLayout(0);
@ -2535,8 +2545,6 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
return -1;
}
if (left_alt && wParam == VK_SPACE && cfg.alt_space) {
alt_state = 0;
PostMessage(hwnd, WM_CHAR, ' ', 0);
SendMessage(hwnd, WM_SYSCOMMAND, SC_KEYMENU, 0);
return -1;
}
@ -2796,6 +2804,8 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
case VK_F20:
code = 34;
break;
}
if ((shift_state&2) == 0) switch (wParam) {
case VK_HOME:
code = 1;
break;
@ -3044,19 +3054,15 @@ static int TranslateKey(UINT message, WPARAM wParam, LPARAM lParam,
keys[0] = 10;
}
/* ALT alone may or may not want to bring up the System menu */
if (wParam == VK_MENU) {
if (cfg.alt_only) {
if (message == WM_SYSKEYDOWN)
alt_state = 1;
else if (message == WM_SYSKEYUP && alt_state)
PostMessage(hwnd, WM_CHAR, ' ', 0);
if (message == WM_SYSKEYUP)
alt_state = 0;
} else
return 0;
} else
alt_state = 0;
/*
* ALT alone may or may not want to bring up the System menu.
* If it's not meant to, we return 0 on presses or releases of
* ALT, to show that we've swallowed the keystroke. Otherwise
* we return -1, which means Windows will give the keystroke
* its default handling (i.e. bring up the System menu).
*/
if (wParam == VK_MENU && !cfg.alt_only)
return 0;
return -1;
}