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A contributor tells me that WM_MOUSEWHEEL is not supported in Win95,

Browse Source 
and offers a patch that uses RegisterMessage() to acquire the
correct dynamic message number to use instead.

[originally from svn r1499]
This commit is contained in:
Simon Tatham 2001-12-15 14:30:58 +00:00
parent 0d18907a1d
commit d6016149bf
1 changed files with 63 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

102
window.c
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@ -81,6 +81,7 @@ static void init_fonts(int, int);
static void another_font(int);
static void deinit_fonts(void);
static void set_input_locale(HKL);
static int do_mouse_wheel_msg(UINT message, WPARAM wParam, LPARAM lParam);
static int is_full_screen(void);
static void make_full_screen(void);
@ -152,6 +153,8 @@ static int compose_state = 0;
static OSVERSIONINFO osVersion;
static UINT wm_mousewheel = WM_MOUSEWHEEL;
/* Dummy routine, only required in plink. */
void ldisc_update(int echo, int edit)
{
@ -200,6 +203,16 @@ int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show)
}
}
/*
* If we're running a version of Windows that doesn't support
* WM_MOUSEWHEEL, find out what message number we should be
* using instead.
*/
if (osVersion.dwMajorVersion < 4 ||
(osVersion.dwMajorVersion == 4 &&
osVersion.dwPlatformId != VER_PLATFORM_WIN32_NT))
wm_mousewheel = RegisterWindowMessage("MSWHEEL_ROLLMSG");
/*
* See if we can find our Help file.
*/
@ -1846,45 +1859,6 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
#define TO_CHR_X(x) ((((x)<0 ? (x)-font_width+1 : (x))-offset_width) / font_width)
#define TO_CHR_Y(y) ((((y)<0 ? (y)-font_height+1: (y))-offset_height) / font_height)
#define WHEEL_DELTA 120
case WM_MOUSEWHEEL:
{
wheel_accumulator += (short) HIWORD(wParam);
wParam = LOWORD(wParam);
/* process events when the threshold is reached */
while (abs(wheel_accumulator) >= WHEEL_DELTA) {
int b;
/* reduce amount for next time */
if (wheel_accumulator > 0) {
b = MBT_WHEEL_UP;
wheel_accumulator -= WHEEL_DELTA;
} else if (wheel_accumulator < 0) {
b = MBT_WHEEL_DOWN;
wheel_accumulator += WHEEL_DELTA;
} else
break;
if (send_raw_mouse) {
/* send a mouse-down followed by a mouse up */
term_mouse(b,
MA_CLICK,
TO_CHR_X(X_POS(lParam)),
TO_CHR_Y(Y_POS(lParam)), wParam & MK_SHIFT,
wParam & MK_CONTROL, is_alt_pressed());
term_mouse(b, MA_RELEASE, TO_CHR_X(X_POS(lParam)),
TO_CHR_Y(Y_POS(lParam)), wParam & MK_SHIFT,
wParam & MK_CONTROL, is_alt_pressed());
} else {
/* trigger a scroll */
term_scroll(0,
b == MBT_WHEEL_UP ? -rows / 2 : rows / 2);
}
}
return 0;
}
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
@ -2442,6 +2416,56 @@ static LRESULT CALLBACK WndProc(HWND hwnd, UINT message,
SetCursor(LoadCursor(NULL, IDC_ARROW));
return TRUE;
}
default:
if (message == wm_mousewheel) {
int shift_pressed=0, control_pressed=0, alt_pressed=0;
if (message == WM_MOUSEWHEEL) {
wheel_accumulator += (short)HIWORD(wParam);
shift_pressed=LOWORD(wParam) & MK_SHIFT;
control_pressed=LOWORD(wParam) & MK_CONTROL;
} else {
BYTE keys[256];
wheel_accumulator += (int)wParam;
if (GetKeyboardState(keys)!=0) {
shift_pressed=keys[VK_SHIFT]&0x80;
control_pressed=keys[VK_CONTROL]&0x80;
}
}
/* process events when the threshold is reached */
while (abs(wheel_accumulator) >= WHEEL_DELTA) {
int b;
/* reduce amount for next time */
if (wheel_accumulator > 0) {
b = MBT_WHEEL_UP;
wheel_accumulator -= WHEEL_DELTA;
} else if (wheel_accumulator < 0) {
b = MBT_WHEEL_DOWN;
wheel_accumulator += WHEEL_DELTA;
} else
break;
if (send_raw_mouse &&
!(cfg.mouse_override && shift_pressed)) {
/* send a mouse-down followed by a mouse up */
term_mouse(b,
MA_CLICK,
TO_CHR_X(X_POS(lParam)),
TO_CHR_Y(Y_POS(lParam)), shift_pressed,
control_pressed, is_alt_pressed());
term_mouse(b, MA_RELEASE, TO_CHR_X(X_POS(lParam)),
TO_CHR_Y(Y_POS(lParam)), shift_pressed,
control_pressed, is_alt_pressed());
} else {
/* trigger a scroll */
term_scroll(0,
b == MBT_WHEEL_UP ? -rows / 2 : rows / 2);
}
}
return 0;
}
}
return DefWindowProc(hwnd, message, wParam, lParam);