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stk/Tk/win/tkWinX.c

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Commit of 3.99.4 version
1999-02-02 06:13:40 -05:00
/*
* tkWinX.c --
*
* This file contains Windows emulation procedures for X routines.
*
* Copyright (c) 1995-1996 Sun Microsystems, Inc.
* Copyright (c) 1994 Software Research Associates, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* SCCS: @(#) tkWinX.c 1.51 97/09/02 13:06:57
*/
#include "tkInt.h"
#include "tkWinInt.h"
/*
* Definitions of extern variables supplied by this file.
*/
int tkpIsWin32s = -1;
/*
* Declarations of static variables used in this file.
*/
static HINSTANCE tkInstance = (HINSTANCE) NULL;
/* Global application instance handle. */
static TkDisplay *winDisplay; /* Display that represents Windows screen. */
static char winScreenName[] = ":0";
/* Default name of windows display. */
static WNDCLASS childClass; /* Window class for child windows. */
static childClassInitialized = 0; /* Registered child class? */
/*
* Forward declarations of procedures used in this file.
*/
static void GenerateXEvent _ANSI_ARGS_((HWND hwnd, UINT message,
WPARAM wParam, LPARAM lParam));
static unsigned int GetState _ANSI_ARGS_((UINT message, WPARAM wParam,
LPARAM lParam));
static void GetTranslatedKey _ANSI_ARGS_((XKeyEvent *xkey));
/*
*----------------------------------------------------------------------
*
* TkGetServerInfo --
*
* Given a window, this procedure returns information about
* the window server for that window. This procedure provides
* the guts of the "winfo server" command.
*
* Results:
* None.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
void
TkGetServerInfo(interp, tkwin)
Tcl_Interp *interp; /* The server information is returned in
* this interpreter's result. */
Tk_Window tkwin; /* Token for window; this selects a
* particular display and server. */
{
char buffer[50];
OSVERSIONINFO info;
info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&info);
sprintf(buffer, "Windows %d.%d %d ", info.dwMajorVersion,
info.dwMinorVersion, info.dwBuildNumber);
Tcl_AppendResult(interp, buffer,
(info.dwPlatformId == VER_PLATFORM_WIN32s) ? "Win32s" : "Win32",
(char *) NULL);
}
/*
*----------------------------------------------------------------------
*
* Tk_GetHINSTANCE --
*
* Retrieves the global instance handle used by the Tk library.
*
* Results:
* Returns the global instance handle.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
HINSTANCE
Tk_GetHINSTANCE()
{
return tkInstance;
}
/*
*----------------------------------------------------------------------
*
* TkWinXInit --
*
* Initialize Xlib emulation layer.
*
* Results:
* None.
*
* Side effects:
* Sets up various data structures.
*
*----------------------------------------------------------------------
*/
void
TkWinXInit(hInstance)
HINSTANCE hInstance;
{
OSVERSIONINFO info;
info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&info);
tkpIsWin32s = (info.dwPlatformId == VER_PLATFORM_WIN32s);
if (childClassInitialized != 0) {
return;
}
childClassInitialized = 1;
tkInstance = hInstance;
childClass.style = CS_HREDRAW | CS_VREDRAW | CS_CLASSDC;
childClass.cbClsExtra = 0;
childClass.cbWndExtra = 0;
childClass.hInstance = hInstance;
childClass.hbrBackground = NULL;
childClass.lpszMenuName = NULL;
/*
* Register the Child window class.
*/
childClass.lpszClassName = TK_WIN_CHILD_CLASS_NAME;
childClass.lpfnWndProc = TkWinChildProc;
childClass.hIcon = NULL;
childClass.hCursor = NULL;
if (!RegisterClass(&childClass)) {
panic("Unable to register TkChild class");
}
}
/*
*----------------------------------------------------------------------
*
* TkWinXCleanup --
*
* Removes the registered classes for Tk.
*
* Results:
* None.
*
* Side effects:
* Removes window classes from the system.
*
*----------------------------------------------------------------------
*/
void
TkWinXCleanup(hInstance)
HINSTANCE hInstance;
{
/*
* Clean up our own class.
*/
if (childClassInitialized) {
childClassInitialized = 0;
UnregisterClass(TK_WIN_CHILD_CLASS_NAME, hInstance);
}
/*
* And let the window manager clean up its own class(es).
*/
TkWinWmCleanup(hInstance);
}
/*
*----------------------------------------------------------------------
*
* TkGetDefaultScreenName --
*
* Returns the name of the screen that Tk should use during
* initialization.
*
* Results:
* Returns a statically allocated string.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
char *
TkGetDefaultScreenName(interp, screenName)
Tcl_Interp *interp; /* Not used. */
char *screenName; /* If NULL, use default string. */
{
if ((screenName == NULL) || (screenName[0] == '\0')) {
screenName = winScreenName;
}
return screenName;
}
/*
*----------------------------------------------------------------------
*
* TkpOpenDisplay --
*
* Create the Display structure and fill it with device
* specific information.
*
* Results:
* Returns a Display structure on success or NULL on failure.
*
* Side effects:
* Allocates a new Display structure.
*
*----------------------------------------------------------------------
*/
TkDisplay *
TkpOpenDisplay(display_name)
char *display_name;
{
Screen *screen;
HDC dc;
TkWinDrawable *twdPtr;
Display *display;
if (winDisplay != NULL) {
if (strcmp(winDisplay->display->display_name, display_name) == 0) {
return winDisplay;
} else {
return NULL;
}
}
display = (Display *) ckalloc(sizeof(Display));
display->display_name = (char *) ckalloc(strlen(display_name)+1);
strcpy(display->display_name, display_name);
display->cursor_font = 1;
display->nscreens = 1;
display->request = 1;
display->qlen = 0;
screen = (Screen *) ckalloc(sizeof(Screen));
screen->display = display;
dc = GetDC(NULL);
screen->width = GetDeviceCaps(dc, HORZRES);
screen->height = GetDeviceCaps(dc, VERTRES);
screen->mwidth = MulDiv(screen->width, 254,
GetDeviceCaps(dc, LOGPIXELSX) * 10);
screen->mheight = MulDiv(screen->height, 254,
GetDeviceCaps(dc, LOGPIXELSY) * 10);
/*
* Set up the root window.
*/
twdPtr = (TkWinDrawable*) ckalloc(sizeof(TkWinDrawable));
if (twdPtr == NULL) {
return None;
}
twdPtr->type = TWD_WINDOW;
twdPtr->window.winPtr = NULL;
twdPtr->window.handle = NULL;
screen->root = (Window)twdPtr;
/*
* On windows, when creating a color bitmap, need two pieces of
* information: the number of color planes and the number of
* pixels per plane. Need to remember both quantities so that
* when constructing an HBITMAP for offscreen rendering, we can
* specify the correct value for the number of planes. Otherwise
* the HBITMAP won't be compatible with the HWND and we'll just
* get blank spots copied onto the screen.
*/
screen->ext_data = (XExtData *) GetDeviceCaps(dc, PLANES);
screen->root_depth = GetDeviceCaps(dc, BITSPIXEL) * (int) screen->ext_data;
screen->root_visual = (Visual *) ckalloc(sizeof(Visual));
screen->root_visual->visualid = 0;
if (GetDeviceCaps(dc, RASTERCAPS) & RC_PALETTE) {
screen->root_visual->map_entries = GetDeviceCaps(dc, SIZEPALETTE);
screen->root_visual->class = PseudoColor;
screen->root_visual->red_mask = 0x0;
screen->root_visual->green_mask = 0x0;
screen->root_visual->blue_mask = 0x0;
} else {
if (screen->root_depth == 4) {
screen->root_visual->class = StaticColor;
screen->root_visual->map_entries = 16;
} else if (screen->root_depth == 8) {
screen->root_visual->class = StaticColor;
screen->root_visual->map_entries = 256;
} else if (screen->root_depth == 12) {
screen->root_visual->class = TrueColor;
screen->root_visual->map_entries = 32;
screen->root_visual->red_mask = 0xf0;
screen->root_visual->green_mask = 0xf000;
screen->root_visual->blue_mask = 0xf00000;
} else if (screen->root_depth == 16) {
screen->root_visual->class = TrueColor;
screen->root_visual->map_entries = 64;
screen->root_visual->red_mask = 0xf8;
screen->root_visual->green_mask = 0xfc00;
screen->root_visual->blue_mask = 0xf80000;
} else if (screen->root_depth >= 24) {
screen->root_visual->class = TrueColor;
screen->root_visual->map_entries = 256;
screen->root_visual->red_mask = 0xff;
screen->root_visual->green_mask = 0xff00;
screen->root_visual->blue_mask = 0xff0000;
}
}
screen->root_visual->bits_per_rgb = screen->root_depth;
ReleaseDC(NULL, dc);
/*
* Note that these pixel values are not palette relative.
*/
screen->white_pixel = RGB(255, 255, 255);
screen->black_pixel = RGB(0, 0, 0);
display->screens = screen;
display->nscreens = 1;
display->default_screen = 0;
screen->cmap = XCreateColormap(display, None, screen->root_visual,
AllocNone);
winDisplay = (TkDisplay *) ckalloc(sizeof(TkDisplay));
winDisplay->display = display;
return winDisplay;
}
/*
*----------------------------------------------------------------------
*
* TkpCloseDisplay --
*
* Closes and deallocates a Display structure created with the
* TkpOpenDisplay function.
*
* Results:
* None.
*
* Side effects:
* Frees up memory.
*
*----------------------------------------------------------------------
*/
void
TkpCloseDisplay(dispPtr)
TkDisplay *dispPtr;
{
Display *display = dispPtr->display;
HWND hwnd;
if (dispPtr != winDisplay) {
panic("TkpCloseDisplay: tried to call TkpCloseDisplay on another display");
return;
}
/*
* Force the clipboard to be rendered if we are the clipboard owner.
*/
if (dispPtr->clipWindow) {
hwnd = Tk_GetHWND(Tk_WindowId(dispPtr->clipWindow));
if (GetClipboardOwner() == hwnd) {
OpenClipboard(hwnd);
EmptyClipboard();
TkWinClipboardRender(dispPtr, CF_TEXT);
CloseClipboard();
}
}
winDisplay = NULL;
if (display->display_name != (char *) NULL) {
ckfree(display->display_name);
}
if (display->screens != (Screen *) NULL) {
if (display->screens->root_visual != NULL) {
ckfree((char *) display->screens->root_visual);
}
if (display->screens->root != None) {
ckfree((char *) display->screens->root);
}
if (display->screens->cmap != None) {
XFreeColormap(display, display->screens->cmap);
}
ckfree((char *) display->screens);
}
ckfree((char *) display);
ckfree((char *) dispPtr);
}
/*
*----------------------------------------------------------------------
*
* XBell --
*
* Generate a beep.
*
* Results:
* None.
*
* Side effects:
* Plays a sounds out the system speakers.
*
*----------------------------------------------------------------------
*/
void
XBell(display, percent)
Display* display;
int percent;
{
MessageBeep(MB_OK);
}
/*
*----------------------------------------------------------------------
*
* TkWinChildProc --
*
* Callback from Windows whenever an event occurs on a child
* window.
*
* Results:
* Standard Windows return value.
*
* Side effects:
* May process events off the Tk event queue.
*
*----------------------------------------------------------------------
*/
LRESULT CALLBACK
TkWinChildProc(hwnd, message, wParam, lParam)
HWND hwnd;
UINT message;
WPARAM wParam;
LPARAM lParam;
{
LRESULT result;
switch (message) {
case WM_SETCURSOR:
/*
* Short circuit the WM_SETCURSOR message since we set
* the cursor elsewhere.
*/
result = TRUE;
break;
case WM_CREATE:
case WM_ERASEBKGND:
case WM_WINDOWPOSCHANGED:
result = 0;
break;
case WM_PAINT:
GenerateXEvent(hwnd, message, wParam, lParam);
result = DefWindowProc(hwnd, message, wParam, lParam);
break;
case TK_CLAIMFOCUS:
case TK_GEOMETRYREQ:
case TK_ATTACHWINDOW:
case TK_DETACHWINDOW:
result = TkWinEmbeddedEventProc(hwnd, message, wParam, lParam);
break;
default:
if (!Tk_TranslateWinEvent(hwnd, message, wParam, lParam,
&result)) {
result = DefWindowProc(hwnd, message, wParam, lParam);
}
break;
}
/*
* Handle any newly queued events before returning control to Windows.
*/
Tcl_ServiceAll();
return result;
}
/*
*----------------------------------------------------------------------
*
* Tk_TranslateWinEvent --
*
* This function is called by widget window procedures to handle
* the translation from Win32 events to Tk events.
*
* Results:
* Returns 1 if the event was handled, else 0.
*
* Side effects:
* Depends on the event.
*
*----------------------------------------------------------------------
*/
int
Tk_TranslateWinEvent(hwnd, message, wParam, lParam, resultPtr)
HWND hwnd;
UINT message;
WPARAM wParam;
LPARAM lParam;
LRESULT *resultPtr;
{
*resultPtr = 0;
switch (message) {
case WM_RENDERFORMAT: {
TkWindow *winPtr = (TkWindow *) Tk_HWNDToWindow(hwnd);
if (winPtr) {
TkWinClipboardRender(winPtr->dispPtr, wParam);
}
return 1;
}
case WM_COMMAND:
case WM_NOTIFY:
case WM_VSCROLL:
case WM_HSCROLL: {
/*
* Reflect these messages back to the sender so that they
* can be handled by the window proc for the control. Note
* that we need to be careful not to reflect a message that
* is targeted to this window, or we will loop.
*/
HWND target = (message == WM_NOTIFY)
? ((NMHDR*)lParam)->hwndFrom : (HWND) lParam;
if (target && target != hwnd) {
*resultPtr = SendMessage(target, message, wParam, lParam);
return 1;
}
break;
}
case WM_LBUTTONDOWN:
case WM_LBUTTONDBLCLK:
case WM_MBUTTONDOWN:
case WM_MBUTTONDBLCLK:
case WM_RBUTTONDOWN:
case WM_RBUTTONDBLCLK:
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
case WM_MOUSEMOVE:
Tk_PointerEvent(hwnd, (short) LOWORD(lParam),
(short) HIWORD(lParam));
return 1;
case WM_CLOSE:
case WM_SETFOCUS:
case WM_KILLFOCUS:
case WM_DESTROYCLIPBOARD:
case WM_CHAR:
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
case WM_KEYDOWN:
case WM_KEYUP:
GenerateXEvent(hwnd, message, wParam, lParam);
return 1;
case WM_MENUCHAR:
GenerateXEvent(hwnd, message, wParam, lParam);
/* MNC_CLOSE is the only one that looks right. This is a hack. */
*resultPtr = MAKELONG (0, MNC_CLOSE);
return 1;
}
return 0;
}
/*
*----------------------------------------------------------------------
*
* GenerateXEvent --
*
* This routine generates an X event from the corresponding
* Windows event.
*
* Results:
* None.
*
* Side effects:
* Queues one or more X events.
*
*----------------------------------------------------------------------
*/
static void
GenerateXEvent(hwnd, message, wParam, lParam)
HWND hwnd;
UINT message;
WPARAM wParam;
LPARAM lParam;
{
XEvent event;
TkWindow *winPtr = (TkWindow *)Tk_HWNDToWindow(hwnd);
if (!winPtr || winPtr->window == None) {
return;
}
event.xany.serial = winPtr->display->request++;
event.xany.send_event = False;
event.xany.display = winPtr->display;
event.xany.window = winPtr->window;
switch (message) {
case WM_PAINT: {
PAINTSTRUCT ps;
event.type = Expose;
BeginPaint(hwnd, &ps);
event.xexpose.x = ps.rcPaint.left;
event.xexpose.y = ps.rcPaint.top;
event.xexpose.width = ps.rcPaint.right - ps.rcPaint.left;
event.xexpose.height = ps.rcPaint.bottom - ps.rcPaint.top;
EndPaint(hwnd, &ps);
event.xexpose.count = 0;
break;
}
case WM_CLOSE:
event.type = ClientMessage;
event.xclient.message_type =
Tk_InternAtom((Tk_Window) winPtr, "WM_PROTOCOLS");
event.xclient.format = 32;
event.xclient.data.l[0] =
Tk_InternAtom((Tk_Window) winPtr, "WM_DELETE_WINDOW");
break;
case WM_SETFOCUS:
case WM_KILLFOCUS: {
TkWindow *otherWinPtr = (TkWindow *)Tk_HWNDToWindow((HWND) wParam);
/*
* Compare toplevel windows to avoid reporting focus
* changes within the same toplevel.
*/
while (!(winPtr->flags & TK_TOP_LEVEL)) {
winPtr = winPtr->parentPtr;
if (winPtr == NULL) {
return;
}
}
while (otherWinPtr && !(otherWinPtr->flags & TK_TOP_LEVEL)) {
otherWinPtr = otherWinPtr->parentPtr;
}
if (otherWinPtr == winPtr) {
return;
}
event.xany.window = winPtr->window;
event.type = (message == WM_SETFOCUS) ? FocusIn : FocusOut;
event.xfocus.mode = NotifyNormal;
event.xfocus.detail = NotifyNonlinear;
break;
}
case WM_DESTROYCLIPBOARD:
event.type = SelectionClear;
event.xselectionclear.selection =
Tk_InternAtom((Tk_Window)winPtr, "CLIPBOARD");
event.xselectionclear.time = TkpGetMS();
break;
case WM_CHAR:
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
case WM_KEYDOWN:
case WM_KEYUP: {
unsigned int state = GetState(message, wParam, lParam);
Time time = TkpGetMS();
POINT clientPoint;
POINTS rootPoint; /* Note: POINT and POINTS are different */
DWORD msgPos;
/*
* Compute the screen and window coordinates of the event.
*/
msgPos = GetMessagePos();
rootPoint = MAKEPOINTS(msgPos);
clientPoint.x = rootPoint.x;
clientPoint.y = rootPoint.y;
ScreenToClient(hwnd, &clientPoint);
/*
* Set up the common event fields.
*/
event.xbutton.root = RootWindow(winPtr->display,
winPtr->screenNum);
event.xbutton.subwindow = None;
event.xbutton.x = clientPoint.x;
event.xbutton.y = clientPoint.y;
event.xbutton.x_root = rootPoint.x;
event.xbutton.y_root = rootPoint.y;
event.xbutton.state = state;
event.xbutton.time = time;
event.xbutton.same_screen = True;
/*
* Now set up event specific fields.
*/
switch (message) {
case WM_SYSKEYDOWN:
case WM_KEYDOWN:
/*
* Check for translated characters in the event queue.
* Setting xany.send_event to -1 indicates to the
* Windows implementation of XLookupString that this
* event was generated by windows and that the Windows
* extension xkey.trans_chars is filled with the
* characters that came from the TranslateMessage
* call. If it is not -1, xkey.keycode is the
* virtual key being sent programmatically by generic
* code.
*/
event.type = KeyPress;
event.xany.send_event = -1;
event.xkey.keycode = wParam;
GetTranslatedKey(&event.xkey);
break;
case WM_SYSKEYUP:
case WM_KEYUP:
/*
* We don't check for translated characters on keyup
* because Tk won't know what to do with them. Instead, we
* wait for the WM_CHAR messages which will follow.
*/
event.type = KeyRelease;
event.xkey.keycode = wParam;
event.xkey.nchars = 0;
break;
case WM_CHAR:
/*
* Synthesize both a KeyPress and a KeyRelease.
*/
event.type = KeyPress;
event.xany.send_event = -1;
event.xkey.keycode = 0;
event.xkey.nchars = 1;
event.xkey.trans_chars[0] = (char) wParam;
Tk_QueueWindowEvent(&event, TCL_QUEUE_TAIL);
event.type = KeyRelease;
break;
}
break;
}
default:
return;
}
Tk_QueueWindowEvent(&event, TCL_QUEUE_TAIL);
}
/*
*----------------------------------------------------------------------
*
* GetState --
*
* This function constructs a state mask for the mouse buttons
* and modifier keys as they were before the event occured.
*
* Results:
* Returns a composite value of all the modifier and button state
* flags that were set at the time the event occurred.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
static unsigned int
GetState(message, wParam, lParam)
UINT message; /* Win32 message type */
WPARAM wParam; /* wParam of message, used if key message */
LPARAM lParam; /* lParam of message, used if key message */
{
int mask;
int prevState; /* 1 if key was previously down */
unsigned int state = TkWinGetModifierState();
/*
* If the event is a key press or release, we check for modifier
* keys so we can report the state of the world before the event.
*/
if (message == WM_SYSKEYDOWN || message == WM_KEYDOWN
|| message == WM_SYSKEYUP || message == WM_KEYUP) {
mask = 0;
prevState = HIWORD(lParam) & KF_REPEAT;
switch(wParam) {
case VK_SHIFT:
mask = ShiftMask;
break;
case VK_CONTROL:
mask = ControlMask;
break;
case VK_MENU:
mask = Mod2Mask;
break;
case VK_CAPITAL:
if (message == WM_SYSKEYDOWN || message == WM_KEYDOWN) {
mask = LockMask;
prevState = ((state & mask) ^ prevState) ? 0 : 1;
}
break;
case VK_NUMLOCK:
if (message == WM_SYSKEYDOWN || message == WM_KEYDOWN) {
mask = Mod1Mask;
prevState = ((state & mask) ^ prevState) ? 0 : 1;
}
break;
case VK_SCROLL:
if (message == WM_SYSKEYDOWN || message == WM_KEYDOWN) {
mask = Mod3Mask;
prevState = ((state & mask) ^ prevState) ? 0 : 1;
}
break;
}
if (prevState) {
state |= mask;
} else {
state &= ~mask;
}
}
return state;
}
/*
*----------------------------------------------------------------------
*
* GetTranslatedKey --
*
* Retrieves WM_CHAR messages that are placed on the system queue
* by the TranslateMessage system call and places them in the
* given KeyPress event.
*
* Results:
* Sets the trans_chars and nchars member of the key event.
*
* Side effects:
* Removes any WM_CHAR messages waiting on the top of the system
* event queue.
*
*----------------------------------------------------------------------
*/
static void
GetTranslatedKey(xkey)
XKeyEvent *xkey;
{
MSG msg;
xkey->nchars = 0;
while (xkey->nchars < XMaxTransChars
&& PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE)) {
if ((msg.message == WM_CHAR) || (msg.message == WM_SYSCHAR)) {
xkey->trans_chars[xkey->nchars] = (char) msg.wParam;
xkey->nchars++;
GetMessage(&msg, NULL, 0, 0);
/*
* If this is a normal character message, we may need to strip
* off the Alt modifier (e.g. Alt-digits). Note that we don't
* want to do this for system messages, because those were
* presumably generated as an Alt-char sequence (e.g. accelerator
* keys).
*/
if ((msg.message == WM_CHAR) && (msg.lParam & 0x20000000)) {
xkey->state = 0;
}
} else {
break;
}
}
}
/*
*----------------------------------------------------------------------
*
* Tk_FreeXId --
*
* This inteface is not needed under Windows.
*
* Results:
* None.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
void
Tk_FreeXId(display, xid)
Display *display;
XID xid;
{
}
/*
*----------------------------------------------------------------------
*
* TkWinResendEvent --
*
* This function converts an X event into a Windows event and
* invokes the specified windo procedure.
*
* Results:
* A standard Windows result.
*
* Side effects:
* Invokes the window procedure
*
*----------------------------------------------------------------------
*/
LRESULT
TkWinResendEvent(wndproc, hwnd, eventPtr)
WNDPROC wndproc;
HWND hwnd;
XEvent *eventPtr;
{
UINT msg;
WPARAM wparam;
LPARAM lparam;
if (eventPtr->type == ButtonPress) {
switch (eventPtr->xbutton.button) {
case Button1:
msg = WM_LBUTTONDOWN;
wparam = MK_LBUTTON;
break;
case Button2:
msg = WM_MBUTTONDOWN;
wparam = MK_MBUTTON;
break;
case Button3:
msg = WM_RBUTTONDOWN;
wparam = MK_RBUTTON;
break;
default:
return 0;
}
if (eventPtr->xbutton.state & Button1Mask) {
wparam |= MK_LBUTTON;
}
if (eventPtr->xbutton.state & Button2Mask) {
wparam |= MK_MBUTTON;
}
if (eventPtr->xbutton.state & Button3Mask) {
wparam |= MK_RBUTTON;
}
if (eventPtr->xbutton.state & ShiftMask) {
wparam |= MK_SHIFT;
}
if (eventPtr->xbutton.state & ControlMask) {
wparam |= MK_CONTROL;
}
lparam = MAKELPARAM((short) eventPtr->xbutton.x,
(short) eventPtr->xbutton.y);
} else {
return 0;
}
return CallWindowProc(wndproc, hwnd, msg, wparam, lparam);
}
/*
*----------------------------------------------------------------------
*
* TkpGetMS --
*
* Return a relative time in milliseconds. It doesn't matter
* when the epoch was.
*
* Results:
* Number of milliseconds.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
unsigned long
TkpGetMS()
{
return GetCurrentTime();
}