From 13c4d5e7e3393441ba2d331420317d2406884ef9 Mon Sep 17 00:00:00 2001 From: Sam Lantinga Date: Mon, 26 Aug 2019 17:43:01 -0700 Subject: [PATCH] Fixed Windows relative mouse coordinates when capturing the mouse over RDP --- src/video/windows/SDL_windowsevents.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) diff --git a/src/video/windows/SDL_windowsevents.c b/src/video/windows/SDL_windowsevents.c index 49e3fbbf70054..ed73b7123ec66 100644 --- a/src/video/windows/SDL_windowsevents.c +++ b/src/video/windows/SDL_windowsevents.c @@ -586,16 +586,22 @@ WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) SDL_SendMouseMotion(data->window, 0, 1, (int)rawmouse->lLastX, (int)rawmouse->lLastY); } else { /* synthesize relative moves from the abs position */ - static SDL_Point initialMousePoint; - if (initialMousePoint.x == 0 && initialMousePoint.y == 0) { - initialMousePoint.x = rawmouse->lLastX; - initialMousePoint.y = rawmouse->lLastY; + static SDL_Point lastMousePoint; + SDL_bool virtual_desktop = (rawmouse->usFlags & MOUSE_VIRTUAL_DESKTOP) ? SDL_TRUE : SDL_FALSE; + int w = GetSystemMetrics(virtual_desktop ? SM_CXVIRTUALSCREEN : SM_CXSCREEN); + int h = GetSystemMetrics(virtual_desktop ? SM_CYVIRTUALSCREEN : SM_CYSCREEN); + int x = (int)(((float)rawmouse->lLastX / 65535.0f) * w); + int y = (int)(((float)rawmouse->lLastY / 65535.0f) * h); + + if (lastMousePoint.x == 0 && lastMousePoint.y == 0) { + lastMousePoint.x = x; + lastMousePoint.y = y; } - SDL_SendMouseMotion(data->window, 0, 1, (int)(rawmouse->lLastX-initialMousePoint.x), (int)(rawmouse->lLastY-initialMousePoint.y)); + SDL_SendMouseMotion(data->window, 0, 1, (int)(x-lastMousePoint.x), (int)(y-lastMousePoint.y)); - initialMousePoint.x = rawmouse->lLastX; - initialMousePoint.y = rawmouse->lLastY; + lastMousePoint.x = x; + lastMousePoint.y = y; } WIN_CheckRawMouseButtons(rawmouse->usButtonFlags, data); } else if (isCapture) {