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Fix multitouch input not working on certain devices on Windows 

Fixes #20474.

(cherry picked from commit 28019c71a6)
This commit is contained in:
Pedro J. Estébanez 2018-08-30 20:05:59 +02:00 committed by Rémi Verschelde
parent 7957a7bd2e
commit 61b6c9c348
1 changed files with 6 additions and 2 deletions
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8
platform/windows/os_windows.cpp
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@ -218,7 +218,11 @@ bool OS_Windows::can_draw() const {
#define MI_WP_SIGNATURE 0xFF515700 #define MI_WP_SIGNATURE 0xFF515700
#define SIGNATURE_MASK 0xFFFFFF00 #define SIGNATURE_MASK 0xFFFFFF00
// Keeping the name suggested by Microsoft, but this macro really answers:
// Is this mouse event emulated from touch or pen input?
#define IsPenEvent(dw) (((dw)&SIGNATURE_MASK) == MI_WP_SIGNATURE) #define IsPenEvent(dw) (((dw)&SIGNATURE_MASK) == MI_WP_SIGNATURE)
// This one tells whether the event comes from touchscreen (and not from pen)
#define IsTouchEvent(dw) (IsPenEvent(dw) && ((dw)&0x80))
void OS_Windows::_touch_event(bool p_pressed, float p_x, float p_y, int idx) { void OS_Windows::_touch_event(bool p_pressed, float p_x, float p_y, int idx) {
@ -361,7 +365,7 @@ LRESULT OS_Windows::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
if (input->is_emulating_mouse_from_touch()) { if (input->is_emulating_mouse_from_touch()) {
// Universal translation enabled; ignore OS translation // Universal translation enabled; ignore OS translation
LPARAM extra = GetMessageExtraInfo(); LPARAM extra = GetMessageExtraInfo();
if (IsPenEvent(extra)) { if (IsTouchEvent(extra)) {
break; break;
} }
} }
@ -451,7 +455,7 @@ LRESULT OS_Windows::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
if (input->is_emulating_mouse_from_touch()) { if (input->is_emulating_mouse_from_touch()) {
// Universal translation enabled; ignore OS translations for left button // Universal translation enabled; ignore OS translations for left button
LPARAM extra = GetMessageExtraInfo(); LPARAM extra = GetMessageExtraInfo();
if (IsPenEvent(extra)) { if (IsTouchEvent(extra)) {
break; break;
} }
} }