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win32_window.c
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win32_window.c
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//========================================================================
// GLFW 3.4 Win32 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2019 Camilla Löwy <elmindreda@glfw.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
// Please use C89 style variable declarations in this file because VS 2010
//========================================================================
#include "internal.h"
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <windowsx.h>
#include <shellapi.h>
#include <uxtheme.h>
// Returns the window style for the specified window
//
static DWORD getWindowStyle(const _GLFWwindow* window)
{
DWORD style = WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
if (window->monitor)
style |= WS_POPUP;
else
{
style |= WS_SYSMENU | WS_MINIMIZEBOX;
if (window->decorated)
{
style |= WS_CAPTION;
if (window->resizable)
style |= WS_MAXIMIZEBOX | WS_THICKFRAME;
}
else
style |= WS_POPUP;
}
return style;
}
// Returns the extended window style for the specified window
//
static DWORD getWindowExStyle(const _GLFWwindow* window)
{
DWORD style = WS_EX_APPWINDOW;
if (window->monitor || window->floating)
style |= WS_EX_TOPMOST;
return style;
}
// Returns the image whose area most closely matches the desired one
//
static const GLFWimage* chooseImage(int count, const GLFWimage* images,
int width, int height)
{
int i, leastDiff = INT_MAX;
const GLFWimage* closest = NULL;
for (i = 0; i < count; i++)
{
const int currDiff = abs(images[i].width * images[i].height -
width * height);
if (currDiff < leastDiff)
{
closest = images + i;
leastDiff = currDiff;
}
}
return closest;
}
// Creates an RGBA icon or cursor
//
static HICON createIcon(const GLFWimage* image,
int xhot, int yhot, GLFWbool icon)
{
int i;
HDC dc;
HICON handle;
HBITMAP color, mask;
BITMAPV5HEADER bi;
ICONINFO ii;
unsigned char* target = NULL;
unsigned char* source = image->pixels;
ZeroMemory(&bi, sizeof(bi));
bi.bV5Size = sizeof(bi);
bi.bV5Width = image->width;
bi.bV5Height = -image->height;
bi.bV5Planes = 1;
bi.bV5BitCount = 32;
bi.bV5Compression = BI_BITFIELDS;
bi.bV5RedMask = 0x00ff0000;
bi.bV5GreenMask = 0x0000ff00;
bi.bV5BlueMask = 0x000000ff;
bi.bV5AlphaMask = 0xff000000;
dc = GetDC(NULL);
color = CreateDIBSection(dc,
(BITMAPINFO*) &bi,
DIB_RGB_COLORS,
(void**) &target,
NULL,
(DWORD) 0);
ReleaseDC(NULL, dc);
if (!color)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to create RGBA bitmap");
return NULL;
}
mask = CreateBitmap(image->width, image->height, 1, 1, NULL);
if (!mask)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to create mask bitmap");
DeleteObject(color);
return NULL;
}
for (i = 0; i < image->width * image->height; i++)
{
target[0] = source[2];
target[1] = source[1];
target[2] = source[0];
target[3] = source[3];
target += 4;
source += 4;
}
ZeroMemory(&ii, sizeof(ii));
ii.fIcon = icon;
ii.xHotspot = xhot;
ii.yHotspot = yhot;
ii.hbmMask = mask;
ii.hbmColor = color;
handle = CreateIconIndirect(&ii);
DeleteObject(color);
DeleteObject(mask);
if (!handle)
{
if (icon)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to create icon");
}
else
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to create cursor");
}
}
return handle;
}
// Translate content area size to full window size according to styles and DPI
//
static void getFullWindowSize(DWORD style, DWORD exStyle,
int contentWidth, int contentHeight,
int* fullWidth, int* fullHeight,
UINT dpi)
{
RECT rect = { 0, 0, contentWidth, contentHeight };
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
AdjustWindowRectExForDpi(&rect, style, FALSE, exStyle, dpi);
else
AdjustWindowRectEx(&rect, style, FALSE, exStyle);
*fullWidth = rect.right - rect.left;
*fullHeight = rect.bottom - rect.top;
}
// Enforce the content area aspect ratio based on which edge is being dragged
//
static void applyAspectRatio(_GLFWwindow* window, int edge, RECT* area)
{
int xoff, yoff;
UINT dpi = USER_DEFAULT_SCREEN_DPI;
const float ratio = (float) window->numer / (float) window->denom;
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
dpi = GetDpiForWindow(window->win32.handle);
getFullWindowSize(getWindowStyle(window), getWindowExStyle(window),
0, 0, &xoff, &yoff, dpi);
if (edge == WMSZ_LEFT || edge == WMSZ_BOTTOMLEFT ||
edge == WMSZ_RIGHT || edge == WMSZ_BOTTOMRIGHT)
{
area->bottom = area->top + yoff +
(int) ((area->right - area->left - xoff) / ratio);
}
else if (edge == WMSZ_TOPLEFT || edge == WMSZ_TOPRIGHT)
{
area->top = area->bottom - yoff -
(int) ((area->right - area->left - xoff) / ratio);
}
else if (edge == WMSZ_TOP || edge == WMSZ_BOTTOM)
{
area->right = area->left + xoff +
(int) ((area->bottom - area->top - yoff) * ratio);
}
}
// Updates the cursor image according to its cursor mode
//
static void updateCursorImage(_GLFWwindow* window)
{
if (window->cursorMode == GLFW_CURSOR_NORMAL)
{
if (window->cursor)
SetCursor(window->cursor->win32.handle);
else
SetCursor(LoadCursorW(NULL, IDC_ARROW));
}
else
SetCursor(NULL);
}
// Updates the cursor clip rect
//
static void updateClipRect(_GLFWwindow* window)
{
if (window)
{
RECT clipRect;
GetClientRect(window->win32.handle, &clipRect);
ClientToScreen(window->win32.handle, (POINT*) &clipRect.left);
ClientToScreen(window->win32.handle, (POINT*) &clipRect.right);
ClipCursor(&clipRect);
}
else
ClipCursor(NULL);
}
// Enables WM_INPUT messages for the mouse for the specified window
//
static void enableRawMouseMotion(_GLFWwindow* window)
{
const RAWINPUTDEVICE rid = { 0x01, 0x02, 0, window->win32.handle };
if (!RegisterRawInputDevices(&rid, 1, sizeof(rid)))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to register raw input device");
}
}
// Disables WM_INPUT messages for the mouse
//
static void disableRawMouseMotion(_GLFWwindow* window)
{
const RAWINPUTDEVICE rid = { 0x01, 0x02, RIDEV_REMOVE, NULL };
if (!RegisterRawInputDevices(&rid, 1, sizeof(rid)))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to remove raw input device");
}
}
// Apply disabled cursor mode to a focused window
//
static void disableCursor(_GLFWwindow* window)
{
_glfw.win32.disabledCursorWindow = window;
_glfwGetCursorPosWin32(window,
&_glfw.win32.restoreCursorPosX,
&_glfw.win32.restoreCursorPosY);
updateCursorImage(window);
_glfwCenterCursorInContentArea(window);
updateClipRect(window);
if (window->rawMouseMotion)
enableRawMouseMotion(window);
}
// Exit disabled cursor mode for the specified window
//
static void enableCursor(_GLFWwindow* window)
{
if (window->rawMouseMotion)
disableRawMouseMotion(window);
_glfw.win32.disabledCursorWindow = NULL;
updateClipRect(NULL);
_glfwSetCursorPosWin32(window,
_glfw.win32.restoreCursorPosX,
_glfw.win32.restoreCursorPosY);
updateCursorImage(window);
}
// Returns whether the cursor is in the content area of the specified window
//
static GLFWbool cursorInContentArea(_GLFWwindow* window)
{
RECT area;
POINT pos;
if (!GetCursorPos(&pos))
return GLFW_FALSE;
if (WindowFromPoint(pos) != window->win32.handle)
return GLFW_FALSE;
GetClientRect(window->win32.handle, &area);
ClientToScreen(window->win32.handle, (POINT*) &area.left);
ClientToScreen(window->win32.handle, (POINT*) &area.right);
return PtInRect(&area, pos);
}
// Update native window styles to match attributes
//
static void updateWindowStyles(const _GLFWwindow* window)
{
RECT rect;
DWORD style = GetWindowLongW(window->win32.handle, GWL_STYLE);
style &= ~(WS_OVERLAPPEDWINDOW | WS_POPUP);
style |= getWindowStyle(window);
GetClientRect(window->win32.handle, &rect);
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
{
AdjustWindowRectExForDpi(&rect, style, FALSE,
getWindowExStyle(window),
GetDpiForWindow(window->win32.handle));
}
else
AdjustWindowRectEx(&rect, style, FALSE, getWindowExStyle(window));
ClientToScreen(window->win32.handle, (POINT*) &rect.left);
ClientToScreen(window->win32.handle, (POINT*) &rect.right);
SetWindowLongW(window->win32.handle, GWL_STYLE, style);
SetWindowPos(window->win32.handle, HWND_TOP,
rect.left, rect.top,
rect.right - rect.left, rect.bottom - rect.top,
SWP_FRAMECHANGED | SWP_NOACTIVATE | SWP_NOZORDER);
}
// Update window framebuffer transparency
//
static void updateFramebufferTransparency(const _GLFWwindow* window)
{
BOOL composition, opaque;
DWORD color;
if (!IsWindowsVistaOrGreater())
return;
if (FAILED(DwmIsCompositionEnabled(&composition)) || !composition)
return;
if (IsWindows8OrGreater() ||
(SUCCEEDED(DwmGetColorizationColor(&color, &opaque)) && !opaque))
{
HRGN region = CreateRectRgn(0, 0, -1, -1);
DWM_BLURBEHIND bb = {0};
bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION;
bb.hRgnBlur = region;
bb.fEnable = TRUE;
DwmEnableBlurBehindWindow(window->win32.handle, &bb);
DeleteObject(region);
}
else
{
// HACK: Disable framebuffer transparency on Windows 7 when the
// colorization color is opaque, because otherwise the window
// contents is blended additively with the previous frame instead
// of replacing it
DWM_BLURBEHIND bb = {0};
bb.dwFlags = DWM_BB_ENABLE;
DwmEnableBlurBehindWindow(window->win32.handle, &bb);
}
}
// Retrieves and translates modifier keys
//
static int getKeyMods(void)
{
int mods = 0;
if (GetKeyState(VK_SHIFT) & 0x8000)
mods |= GLFW_MOD_SHIFT;
if (GetKeyState(VK_CONTROL) & 0x8000)
mods |= GLFW_MOD_CONTROL;
if (GetKeyState(VK_MENU) & 0x8000)
mods |= GLFW_MOD_ALT;
if ((GetKeyState(VK_LWIN) | GetKeyState(VK_RWIN)) & 0x8000)
mods |= GLFW_MOD_SUPER;
if (GetKeyState(VK_CAPITAL) & 1)
mods |= GLFW_MOD_CAPS_LOCK;
if (GetKeyState(VK_NUMLOCK) & 1)
mods |= GLFW_MOD_NUM_LOCK;
return mods;
}
static void fitToMonitor(_GLFWwindow* window)
{
MONITORINFO mi = { sizeof(mi) };
GetMonitorInfo(window->monitor->win32.handle, &mi);
SetWindowPos(window->win32.handle, HWND_TOPMOST,
mi.rcMonitor.left,
mi.rcMonitor.top,
mi.rcMonitor.right - mi.rcMonitor.left,
mi.rcMonitor.bottom - mi.rcMonitor.top,
SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOCOPYBITS);
}
// Make the specified window and its video mode active on its monitor
//
static void acquireMonitor(_GLFWwindow* window)
{
if (!_glfw.win32.acquiredMonitorCount)
{
SetThreadExecutionState(ES_CONTINUOUS | ES_DISPLAY_REQUIRED);
// HACK: When mouse trails are enabled the cursor becomes invisible when
// the OpenGL ICD switches to page flipping
SystemParametersInfo(SPI_GETMOUSETRAILS, 0, &_glfw.win32.mouseTrailSize, 0);
SystemParametersInfo(SPI_SETMOUSETRAILS, 0, 0, 0);
}
if (!window->monitor->window)
_glfw.win32.acquiredMonitorCount++;
_glfwSetVideoModeWin32(window->monitor, &window->videoMode);
_glfwInputMonitorWindow(window->monitor, window);
}
// Remove the window and restore the original video mode
//
static void releaseMonitor(_GLFWwindow* window)
{
if (window->monitor->window != window)
return;
_glfw.win32.acquiredMonitorCount--;
if (!_glfw.win32.acquiredMonitorCount)
{
SetThreadExecutionState(ES_CONTINUOUS);
// HACK: Restore mouse trail length saved in acquireMonitor
SystemParametersInfo(SPI_SETMOUSETRAILS, _glfw.win32.mouseTrailSize, 0, 0);
}
_glfwInputMonitorWindow(window->monitor, NULL);
_glfwRestoreVideoModeWin32(window->monitor);
}
// Window callback function (handles window messages)
//
static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
WPARAM wParam, LPARAM lParam)
{
static RECT border_thickness = { 4, 4, 4, 4 };
BOOL hasThickFrame = GetWindowLongPtr(hWnd, GWL_STYLE) & WS_THICKFRAME;
_GLFWwindow* window = GetPropW(hWnd, L"GLFW");
if (!window)
{
// This is the message handling for the hidden helper window
// and for a regular window during its initial creation
switch (uMsg)
{
case WM_NCCREATE:
{
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
{
const CREATESTRUCTW* cs = (const CREATESTRUCTW*) lParam;
const _GLFWwndconfig* wndconfig = cs->lpCreateParams;
// On per-monitor DPI aware V1 systems, only enable
// non-client scaling for windows that scale the client area
// We need WM_GETDPISCALEDSIZE from V2 to keep the client
// area static when the non-client area is scaled
if (wndconfig && wndconfig->scaleToMonitor)
EnableNonClientDpiScaling(hWnd);
}
break;
}
case WM_DISPLAYCHANGE:
_glfwPollMonitorsWin32();
break;
case WM_DEVICECHANGE:
{
if (!_glfw.joysticksInitialized)
break;
if (wParam == DBT_DEVICEARRIVAL)
{
DEV_BROADCAST_HDR* dbh = (DEV_BROADCAST_HDR*) lParam;
if (dbh && dbh->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE)
_glfwDetectJoystickConnectionWin32();
}
else if (wParam == DBT_DEVICEREMOVECOMPLETE)
{
DEV_BROADCAST_HDR* dbh = (DEV_BROADCAST_HDR*) lParam;
if (dbh && dbh->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE)
_glfwDetectJoystickDisconnectionWin32();
}
break;
}
case WM_CREATE:
{
if (_glfw.hints.window.titlebar)
break;
if (hasThickFrame)
{
RECT size_rect;
GetWindowRect(hWnd, &size_rect);
// Inform the application of the frame change to force redrawing with the new
// client area that is extended into the title bar
SetWindowPos(
hWnd, NULL,
size_rect.left, size_rect.top,
size_rect.right - size_rect.left, size_rect.bottom - size_rect.top,
SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE
);
break;
}
break;
}
case WM_ACTIVATE:
{
if (_glfw.hints.window.titlebar)
break;
RECT title_bar_rect = {0};
InvalidateRect(hWnd, &title_bar_rect, FALSE);
break;
}
}
return DefWindowProcW(hWnd, uMsg, wParam, lParam);
}
switch (uMsg)
{
case WM_MOUSEACTIVATE:
{
// HACK: Postpone cursor disabling when the window was activated by
// clicking a caption button
if (HIWORD(lParam) == WM_LBUTTONDOWN)
{
if (LOWORD(lParam) != HTCLIENT)
window->win32.frameAction = GLFW_TRUE;
}
break;
}
case WM_CAPTURECHANGED:
{
// HACK: Disable the cursor once the caption button action has been
// completed or cancelled
if (lParam == 0 && window->win32.frameAction)
{
if (window->cursorMode == GLFW_CURSOR_DISABLED)
disableCursor(window);
window->win32.frameAction = GLFW_FALSE;
}
break;
}
case WM_SETFOCUS:
{
_glfwInputWindowFocus(window, GLFW_TRUE);
// HACK: Do not disable cursor while the user is interacting with
// a caption button
if (window->win32.frameAction)
break;
if (window->cursorMode == GLFW_CURSOR_DISABLED)
disableCursor(window);
return 0;
}
case WM_KILLFOCUS:
{
if (window->cursorMode == GLFW_CURSOR_DISABLED)
enableCursor(window);
if (window->monitor && window->autoIconify)
_glfwIconifyWindowWin32(window);
_glfwInputWindowFocus(window, GLFW_FALSE);
return 0;
}
case WM_SYSCOMMAND:
{
switch (wParam & 0xfff0)
{
case SC_SCREENSAVE:
case SC_MONITORPOWER:
{
if (window->monitor)
{
// We are running in full screen mode, so disallow
// screen saver and screen blanking
return 0;
}
else
break;
}
// User trying to access application menu using ALT?
case SC_KEYMENU:
{
if (!window->win32.keymenu)
return 0;
break;
}
}
break;
}
case WM_CLOSE:
{
_glfwInputWindowCloseRequest(window);
return 0;
}
case WM_INPUTLANGCHANGE:
{
_glfwUpdateKeyNamesWin32();
break;
}
case WM_CHAR:
case WM_SYSCHAR:
{
if (wParam >= 0xd800 && wParam <= 0xdbff)
window->win32.highSurrogate = (WCHAR) wParam;
else
{
uint32_t codepoint = 0;
if (wParam >= 0xdc00 && wParam <= 0xdfff)
{
if (window->win32.highSurrogate)
{
codepoint += (window->win32.highSurrogate - 0xd800) << 10;
codepoint += (WCHAR) wParam - 0xdc00;
codepoint += 0x10000;
}
}
else
codepoint = (WCHAR) wParam;
window->win32.highSurrogate = 0;
_glfwInputChar(window, codepoint, getKeyMods(), uMsg != WM_SYSCHAR);
}
if (uMsg == WM_SYSCHAR && window->win32.keymenu)
break;
return 0;
}
case WM_UNICHAR:
{
if (wParam == UNICODE_NOCHAR)
{
// WM_UNICHAR is not sent by Windows, but is sent by some
// third-party input method engine
// Returning TRUE here announces support for this message
return TRUE;
}
_glfwInputChar(window, (uint32_t) wParam, getKeyMods(), GLFW_TRUE);
return 0;
}
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
case WM_KEYUP:
case WM_SYSKEYUP:
{
int key, scancode;
const int action = (HIWORD(lParam) & KF_UP) ? GLFW_RELEASE : GLFW_PRESS;
const int mods = getKeyMods();
scancode = (HIWORD(lParam) & (KF_EXTENDED | 0xff));
if (!scancode)
{
// NOTE: Some synthetic key messages have a scancode of zero
// HACK: Map the virtual key back to a usable scancode
scancode = MapVirtualKeyW((UINT) wParam, MAPVK_VK_TO_VSC);
}
key = _glfw.win32.keycodes[scancode];
// The Ctrl keys require special handling
if (wParam == VK_CONTROL)
{
if (HIWORD(lParam) & KF_EXTENDED)
{
// Right side keys have the extended key bit set
key = GLFW_KEY_RIGHT_CONTROL;
}
else
{
// NOTE: Alt Gr sends Left Ctrl followed by Right Alt
// HACK: We only want one event for Alt Gr, so if we detect
// this sequence we discard this Left Ctrl message now
// and later report Right Alt normally
MSG next;
const DWORD time = GetMessageTime();
if (PeekMessageW(&next, NULL, 0, 0, PM_NOREMOVE))
{
if (next.message == WM_KEYDOWN ||
next.message == WM_SYSKEYDOWN ||
next.message == WM_KEYUP ||
next.message == WM_SYSKEYUP)
{
if (next.wParam == VK_MENU &&
(HIWORD(next.lParam) & KF_EXTENDED) &&
next.time == time)
{
// Next message is Right Alt down so discard this
break;
}
}
}
// This is a regular Left Ctrl message
key = GLFW_KEY_LEFT_CONTROL;
}
}
else if (wParam == VK_PROCESSKEY)
{
// IME notifies that keys have been filtered by setting the
// virtual key-code to VK_PROCESSKEY
break;
}
if (action == GLFW_RELEASE && wParam == VK_SHIFT)
{
// HACK: Release both Shift keys on Shift up event, as when both
// are pressed the first release does not emit any event
// NOTE: The other half of this is in _glfwPollEventsWin32
_glfwInputKey(window, GLFW_KEY_LEFT_SHIFT, scancode, action, mods);
_glfwInputKey(window, GLFW_KEY_RIGHT_SHIFT, scancode, action, mods);
}
else if (wParam == VK_SNAPSHOT)
{
// HACK: Key down is not reported for the Print Screen key
_glfwInputKey(window, key, scancode, GLFW_PRESS, mods);
_glfwInputKey(window, key, scancode, GLFW_RELEASE, mods);
}
else
_glfwInputKey(window, key, scancode, action, mods);
break;
}
case WM_LBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_XBUTTONDOWN:
case WM_LBUTTONUP:
case WM_RBUTTONUP:
case WM_MBUTTONUP:
case WM_XBUTTONUP:
{
int i, button, action;
if (uMsg == WM_LBUTTONDOWN || uMsg == WM_LBUTTONUP)
button = GLFW_MOUSE_BUTTON_LEFT;
else if (uMsg == WM_RBUTTONDOWN || uMsg == WM_RBUTTONUP)
button = GLFW_MOUSE_BUTTON_RIGHT;
else if (uMsg == WM_MBUTTONDOWN || uMsg == WM_MBUTTONUP)
button = GLFW_MOUSE_BUTTON_MIDDLE;
else if (GET_XBUTTON_WPARAM(wParam) == XBUTTON1)
button = GLFW_MOUSE_BUTTON_4;
else
button = GLFW_MOUSE_BUTTON_5;
if (uMsg == WM_LBUTTONDOWN || uMsg == WM_RBUTTONDOWN ||
uMsg == WM_MBUTTONDOWN || uMsg == WM_XBUTTONDOWN)
{
action = GLFW_PRESS;
}
else
action = GLFW_RELEASE;
for (i = 0; i <= GLFW_MOUSE_BUTTON_LAST; i++)
{
if (window->mouseButtons[i] == GLFW_PRESS)
break;
}
if (i > GLFW_MOUSE_BUTTON_LAST)
SetCapture(hWnd);
_glfwInputMouseClick(window, button, action, getKeyMods());
for (i = 0; i <= GLFW_MOUSE_BUTTON_LAST; i++)
{
if (window->mouseButtons[i] == GLFW_PRESS)
break;
}
if (i > GLFW_MOUSE_BUTTON_LAST)
ReleaseCapture();
if (uMsg == WM_XBUTTONDOWN || uMsg == WM_XBUTTONUP)
return TRUE;
return 0;
}
case WM_MOUSEMOVE:
{
const int x = GET_X_LPARAM(lParam);
const int y = GET_Y_LPARAM(lParam);
if (!window->win32.cursorTracked)
{
TRACKMOUSEEVENT tme;
ZeroMemory(&tme, sizeof(tme));
tme.cbSize = sizeof(tme);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = window->win32.handle;
TrackMouseEvent(&tme);
window->win32.cursorTracked = GLFW_TRUE;
_glfwInputCursorEnter(window, GLFW_TRUE);
}
if (window->cursorMode == GLFW_CURSOR_DISABLED)
{
const int dx = x - window->win32.lastCursorPosX;
const int dy = y - window->win32.lastCursorPosY;
if (_glfw.win32.disabledCursorWindow != window)
break;
if (window->rawMouseMotion)
break;
_glfwInputCursorPos(window,
window->virtualCursorPosX + dx,
window->virtualCursorPosY + dy);
}
else
_glfwInputCursorPos(window, x, y);
window->win32.lastCursorPosX = x;
window->win32.lastCursorPosY = y;
return 0;
}
case WM_INPUT:
{
UINT size = 0;
HRAWINPUT ri = (HRAWINPUT) lParam;
RAWINPUT* data = NULL;
int dx, dy;
if (_glfw.win32.disabledCursorWindow != window)
break;
if (!window->rawMouseMotion)
break;
GetRawInputData(ri, RID_INPUT, NULL, &size, sizeof(RAWINPUTHEADER));
if (size > (UINT) _glfw.win32.rawInputSize)
{
_glfw_free(_glfw.win32.rawInput);
_glfw.win32.rawInput = _glfw_calloc(size, 1);
_glfw.win32.rawInputSize = size;
}
size = _glfw.win32.rawInputSize;
if (GetRawInputData(ri, RID_INPUT,
_glfw.win32.rawInput, &size,
sizeof(RAWINPUTHEADER)) == (UINT) -1)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to retrieve raw input data");
break;
}
data = _glfw.win32.rawInput;
if (data->data.mouse.usFlags & MOUSE_MOVE_ABSOLUTE)
{
dx = data->data.mouse.lLastX - window->win32.lastCursorPosX;
dy = data->data.mouse.lLastY - window->win32.lastCursorPosY;
}
else
{
dx = data->data.mouse.lLastX;
dy = data->data.mouse.lLastY;
}
_glfwInputCursorPos(window,
window->virtualCursorPosX + dx,
window->virtualCursorPosY + dy);
window->win32.lastCursorPosX += dx;
window->win32.lastCursorPosY += dy;
break;
}
case WM_MOUSELEAVE:
{
window->win32.cursorTracked = GLFW_FALSE;
_glfwInputCursorEnter(window, GLFW_FALSE);
return 0;
}
case WM_MOUSEWHEEL:
{
_glfwInputScroll(window, 0.0, (SHORT) HIWORD(wParam) / (double) WHEEL_DELTA);
return 0;
}
case WM_MOUSEHWHEEL:
{
// This message is only sent on Windows Vista and later
// NOTE: The X-axis is inverted for consistency with macOS and X11
_glfwInputScroll(window, -((SHORT) HIWORD(wParam) / (double) WHEEL_DELTA), 0.0);
return 0;
}
case WM_ENTERSIZEMOVE:
case WM_ENTERMENULOOP:
{
if (window->win32.frameAction)
break;
// HACK: Enable the cursor while the user is moving or
// resizing the window or using the window menu
if (window->cursorMode == GLFW_CURSOR_DISABLED)
enableCursor(window);
break;
}
case WM_EXITSIZEMOVE:
case WM_EXITMENULOOP:
{
if (window->win32.frameAction)
break;