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archie/tk4.2/win/tkWinX.c

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Update tcl/tk for tcl-dp
2024-05-27 16:40:40 +02:00
/*
* 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 1.31 96/10/14 13:26:55
*/
#include "tkInt.h"
#include "tkWinInt.h"
/*
* The following declaration is a special purpose backdoor into the
* Tcl notifier. It is used to process events on the Tcl event queue,
* without reentering the system event queue.
*/
extern void TclWinFlushEvents _ANSI_ARGS_((void));
/*
* Declarations of static variables used in this file.
*/
static HINSTANCE appInstance = (HINSTANCE) NULL;
/* Global application instance handle. */
static Display *winDisplay; /* Display that represents Windows screen. */
static Tcl_HashTable windowTable;
/* Table of child windows indexed by handle. */
static char winScreenName[] = ":0";
/* Default name of windows display. */
static ATOM topLevelAtom, childAtom;
/* Atoms for the classes registered by Tk. */
static isInModal = 0; /* True if TK can entered a modal loop */
/*
* Forward declarations of procedures used in this file.
*/
static void DeleteWindow _ANSI_ARGS_((HWND hwnd));
static void GetTranslatedKey _ANSI_ARGS_((XKeyEvent *xkey));
static void TranslateEvent _ANSI_ARGS_((HWND hwnd, UINT message,
WPARAM wParam, LPARAM lParam));
/*
*----------------------------------------------------------------------
*
* 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;
int index = 0;
static char* os[] = {"Win32", "Win32s", "Win32c"};
info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&info);
if (info.dwPlatformId == VER_PLATFORM_WIN32s) {
index = 1;
} else if (info.dwPlatformId == VER_PLATFORM_WIN32s) {
index = 2;
}
sprintf(buffer, "Windows %d.%d %d ", info.dwMajorVersion,
info.dwMinorVersion, info.dwBuildNumber);
Tcl_AppendResult(interp, buffer, os[index], (char *) NULL);
}
/*
*----------------------------------------------------------------------
*
* TkWinGetTkModule --
*
* This function returns the module handle for the Tk DLL.
*
* Results:
* Returns the library module handle.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
HMODULE
TkWinGetTkModule()
{
char libName[13];
sprintf(libName, "tk%d%d.dll", TK_MAJOR_VERSION, TK_MINOR_VERSION);
return GetModuleHandle(libName);
}
/*
*----------------------------------------------------------------------
*
* TkWinGetAppInstance --
*
* Retrieves the global application instance handle.
*
* Results:
* Returns the global application instance handle.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
HINSTANCE
TkWinGetAppInstance()
{
return appInstance;
}
/*
*----------------------------------------------------------------------
*
* TkWinXInit --
*
* Initialize Xlib emulation layer.
*
* Results:
* None.
*
* Side effects:
* Sets up various data structures.
*
*----------------------------------------------------------------------
*/
void
TkWinXInit(hInstance)
HINSTANCE hInstance;
{
WNDCLASS class;
static initialized = 0;
if (initialized != 0) {
return;
}
initialized = 1;
appInstance = hInstance;
class.style = CS_HREDRAW | CS_VREDRAW;
class.cbClsExtra = 0;
class.cbWndExtra = 0;
class.hInstance = hInstance;
class.hbrBackground = NULL;
class.lpszMenuName = NULL;
/*
* Register the TopLevel window class.
*/
class.lpszClassName = TK_WIN_TOPLEVEL_CLASS_NAME;
class.lpfnWndProc = TkWinTopLevelProc;
class.hIcon = LoadIcon(TkWinGetTkModule(), "tk");
class.hCursor = LoadCursor(NULL, IDC_ARROW);
topLevelAtom = RegisterClass(&class);
if (topLevelAtom == 0) {
panic("Unable to register TkTopLevel class");
}
/*
* Register the Child window class.
*/
class.lpszClassName = TK_WIN_CHILD_CLASS_NAME;
class.lpfnWndProc = TkWinChildProc;
class.hIcon = NULL;
class.hCursor = NULL;
childAtom = RegisterClass(&class);
if (childAtom == 0) {
UnregisterClass((LPCTSTR)topLevelAtom, hInstance);
panic("Unable to register TkChild class");
}
}
/*
*----------------------------------------------------------------------
*
* 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;
}
/*
*----------------------------------------------------------------------
*
* XOpenDisplay --
*
* 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.
*
*----------------------------------------------------------------------
*/
Display *
XOpenDisplay(display_name)
_Xconst char *display_name;
{
Screen *screen;
HDC dc;
TkWinDrawable *twdPtr;
TkWinPointerInit();
Tcl_InitHashTable(&windowTable, TCL_ONE_WORD_KEYS);
if (winDisplay != NULL) {
if (strcmp(winDisplay->display_name, display_name) == 0) {
return winDisplay;
} else {
panic("XOpenDisplay: tried to open multiple displays");
return NULL;
}
}
winDisplay = (Display *) ckalloc(sizeof(Display));
winDisplay->display_name = (char *) ckalloc(strlen(display_name)+1);
strcpy(winDisplay->display_name, display_name);
winDisplay->cursor_font = 1;
winDisplay->nscreens = 1;
winDisplay->request = 1;
winDisplay->qlen = 0;
screen = (Screen *) ckalloc(sizeof(Screen));
screen->display = winDisplay;
dc = GetDC(NULL);
screen->width = GetDeviceCaps(dc, HORZRES);
screen->height = GetDeviceCaps(dc, VERTRES);
screen->mwidth = GetDeviceCaps(dc, HORZSIZE);
screen->mheight = GetDeviceCaps(dc, VERTSIZE);
/*
* 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;
screen->root_depth = GetDeviceCaps(dc, BITSPIXEL);
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 == 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);
winDisplay->screens = screen;
winDisplay->nscreens = 1;
winDisplay->default_screen = 0;
screen->cmap = XCreateColormap(winDisplay, None, screen->root_visual,
AllocNone);
return winDisplay;
}
/*
*----------------------------------------------------------------------
*
* 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);
}
/*
*----------------------------------------------------------------------
*
* TkWinTopLevelProc --
*
* Callback from Windows whenever an event occurs on a top level
* window.
*
* Results:
* Standard Windows return value.
*
* Side effects:
* Default window behavior.
*
*----------------------------------------------------------------------
*/
LRESULT CALLBACK
TkWinTopLevelProc(hwnd, message, wParam, lParam)
HWND hwnd;
UINT message;
WPARAM wParam;
LPARAM lParam;
{
static inMoveSize = 0;
if (inMoveSize) {
TclWinFlushEvents();
}
switch (message) {
case WM_ENTERSIZEMOVE:
inMoveSize = 1;
break;
case WM_EXITSIZEMOVE:
inMoveSize = 0;
break;
case WM_CREATE: {
CREATESTRUCT *info = (CREATESTRUCT *) lParam;
TkWinDrawable *twdPtr = (TkWinDrawable *)info->lpCreateParams;
Tcl_HashEntry *hPtr;
int new;
/*
* Add the window and handle to the window table.
*/
twdPtr->window.handle = hwnd;
hPtr = Tcl_CreateHashEntry(&windowTable, (char *)hwnd, &new);
if (!new) {
panic("Duplicate window handle: %p", hwnd);
}
Tcl_SetHashValue(hPtr, twdPtr);
/*
* Store the pointer to the drawable structure passed into
* CreateWindow in the user data slot of the window.
*/
SetWindowLong(hwnd, GWL_USERDATA, (DWORD)twdPtr);
return 0;
}
case WM_DESTROY:
DeleteWindow(hwnd);
return 0;
case WM_GETMINMAXINFO:
TkWinWmSetLimits(hwnd, (MINMAXINFO *) lParam);
return 0;
case WM_PALETTECHANGED:
return TkWinWmInstallColormaps(hwnd, WM_PALETTECHANGED,
hwnd == (HWND)wParam);
case WM_QUERYNEWPALETTE:
return TkWinWmInstallColormaps(hwnd, WM_QUERYNEWPALETTE, TRUE);
case WM_WINDOWPOSCHANGED: {
WINDOWPOS *pos = (WINDOWPOS *) lParam;
TkWinDrawable *twdPtr =
(TkWinDrawable *) GetWindowLong(hwnd, GWL_USERDATA);
TkWinWmConfigure(TkWinGetWinPtr(twdPtr), pos);
return 0;
}
case WM_CLOSE:
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
case WM_MOUSEMOVE:
case WM_CHAR:
case WM_SYSCHAR:
case WM_KEYDOWN:
case WM_KEYUP:
case WM_SETFOCUS:
case WM_KILLFOCUS:
TranslateEvent(hwnd, message, wParam, lParam);
return 0;
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
case WM_DESTROYCLIPBOARD:
TranslateEvent(hwnd, message, wParam, lParam);
/*
* We need to pass these messages to the default window
* procedure in order to get the system menu to work.
*/
break;
}
return DefWindowProc(hwnd, message, wParam, lParam);
}
/*
*----------------------------------------------------------------------
*
* TkWinChildProc --
*
* Callback from Windows whenever an event occurs on a child
* window.
*
* Results:
* Standard Windows return value.
*
* Side effects:
* Default window behavior.
*
*----------------------------------------------------------------------
*/
LRESULT CALLBACK
TkWinChildProc(hwnd, message, wParam, lParam)
HWND hwnd;
UINT message;
WPARAM wParam;
LPARAM lParam;
{
switch (message) {
case WM_CREATE: {
CREATESTRUCT *info = (CREATESTRUCT *) lParam;
Tcl_HashEntry *hPtr;
int new;
/*
* Add the window and handle to the window table.
*/
hPtr = Tcl_CreateHashEntry(&windowTable, (char *)hwnd, &new);
if (!new) {
panic("Duplicate window handle: %p", hwnd);
}
Tcl_SetHashValue(hPtr, info->lpCreateParams);
/*
* Store the pointer to the drawable structure passed into
* CreateWindow in the user data slot of the window. Then set
* the Z stacking order so the window appears on top.
*/
SetWindowLong(hwnd, GWL_USERDATA, (DWORD)info->lpCreateParams);
SetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0,
SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
return 0;
}
case WM_DESTROY:
DeleteWindow(hwnd);
return 0;
case WM_ERASEBKGND:
case WM_WINDOWPOSCHANGED:
return 0;
case WM_RENDERFORMAT: {
TkWinDrawable *twdPtr;
twdPtr = (TkWinDrawable *) GetWindowLong(hwnd, GWL_USERDATA);
TkWinClipboardRender(TkWinGetWinPtr(twdPtr), wParam);
return 0;
}
case WM_DESTROYCLIPBOARD:
case WM_PAINT:
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
case WM_MOUSEMOVE:
case WM_CHAR:
case WM_SYSCHAR:
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
case WM_KEYDOWN:
case WM_KEYUP:
case WM_SETFOCUS:
case WM_KILLFOCUS:
TranslateEvent(hwnd, message, wParam, lParam);
return 0;
}
return DefWindowProc(hwnd, message, wParam, lParam);
}
/*
*----------------------------------------------------------------------
*
* TranslateEvent --
*
* This function is called by the window procedures to handle
* the translation from Win32 events to Tk events.
*
* Results:
* None.
*
* Side effects:
* Queues a new Tk event.
*
*----------------------------------------------------------------------
*/
static void
TranslateEvent(hwnd, message, wParam, lParam)
HWND hwnd;
UINT message;
WPARAM wParam;
LPARAM lParam;
{
TkWindow *winPtr;
XEvent event;
TkWinDrawable *twdPtr;
/*
* Retrieve the window information, and reset the hwnd pointer in
* case the original window was a toplevel decorative frame.
*/
twdPtr = (TkWinDrawable *) GetWindowLong(hwnd, GWL_USERDATA);
if (twdPtr == NULL) {
return;
}
winPtr = TkWinGetWinPtr(twdPtr);
/*
* TranslateEvent may get called even after Tk has deleted the window.
* So we must check for a dead window before proceeding.
*/
if (winPtr == NULL || winPtr->window == None) {
return;
}
hwnd = TkWinGetHWND(winPtr->window);
event.xany.serial = winPtr->display->request++;
event.xany.send_event = False;
event.xany.display = winPtr->display;
event.xany.window = (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:
event.type = FocusIn;
event.xfocus.mode = NotifyNormal;
event.xfocus.detail = NotifyAncestor;
break;
case WM_KILLFOCUS:
event.type = FocusOut;
event.xfocus.mode = NotifyNormal;
event.xfocus.detail = NotifyAncestor;
break;
case WM_DESTROYCLIPBOARD:
event.type = SelectionClear;
event.xselectionclear.selection =
Tk_InternAtom((Tk_Window)winPtr, "CLIPBOARD");
event.xselectionclear.time = GetCurrentTime();
break;
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
case WM_MOUSEMOVE:
case WM_CHAR:
case WM_SYSCHAR:
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
case WM_KEYDOWN:
case WM_KEYUP: {
unsigned int state = TkWinGetModifierState(message,
wParam, lParam);
Time time = GetCurrentTime();
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_LBUTTONDOWN:
event.type = ButtonPress;
event.xbutton.button = Button1;
break;
case WM_MBUTTONDOWN:
event.type = ButtonPress;
event.xbutton.button = Button2;
break;
case WM_RBUTTONDOWN:
event.type = ButtonPress;
event.xbutton.button = Button3;
break;
case WM_LBUTTONUP:
event.type = ButtonRelease;
event.xbutton.button = Button1;
break;
case WM_MBUTTONUP:
event.type = ButtonRelease;
event.xbutton.button = Button2;
break;
case WM_RBUTTONUP:
event.type = ButtonRelease;
event.xbutton.button = Button3;
break;
case WM_MOUSEMOVE:
event.type = MotionNotify;
event.xmotion.is_hint = NotifyNormal;
break;
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:
case WM_SYSCHAR:
/*
* 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;
}
if ((event.type == MotionNotify)
|| (event.type == ButtonPress)
|| (event.type == ButtonRelease)) {
TkWinPointerEvent(&event, winPtr);
goto done;
}
break;
}
default:
goto done;
}
Tk_QueueWindowEvent(&event, TCL_QUEUE_TAIL);
done:
if (isInModal) {
TclWinFlushEvents();
}
}
/*
*----------------------------------------------------------------------
*
* TkWinGetModifierState --
*
* This function constructs a state mask for the mouse buttons
* and modifier keys.
*
* 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.
*
*----------------------------------------------------------------------
*/
unsigned int
TkWinGetModifierState(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 */
{
unsigned int state = 0; /* accumulated state flags */
int isKeyEvent; /* 1 if message is a key press or release */
int prevState; /* 1 if key was previously down */
/*
* If the event is a key press or release, we check for autorepeat.
*/
if (message == WM_SYSKEYDOWN || message == WM_KEYDOWN
|| message == WM_SYSKEYUP || message == WM_KEYUP) {
isKeyEvent = TRUE;
prevState = HIWORD(lParam) & KF_REPEAT;
}
/*
* If the key being pressed or released is a modifier key, then
* we use its previous state, otherwise we look at the current state.
*/
if (isKeyEvent && (wParam == VK_SHIFT)) {
state |= prevState ? ShiftMask : 0;
} else {
state |= (GetKeyState(VK_SHIFT) & 0x8000) ? ShiftMask : 0;
}
if (isKeyEvent && (wParam == VK_CONTROL)) {
state |= prevState ? ControlMask : 0;
} else {
state |= (GetKeyState(VK_CONTROL) & 0x8000) ? ControlMask : 0;
}
if (isKeyEvent && (wParam == VK_MENU)) {
state |= prevState ? Mod2Mask : 0;
} else {
state |= (GetKeyState(VK_MENU) & 0x8000) ? Mod2Mask : 0;
}
/*
* For toggle keys, we have to check both the previous key state
* and the current toggle state. The result is the state of the
* toggle before the event.
*/
if ((wParam == VK_CAPITAL)
&& (message == WM_SYSKEYDOWN || message == WM_KEYDOWN)) {
state = (prevState ^ (GetKeyState(VK_CAPITAL) & 0x0001))
? 0 : LockMask;
} else {
state |= (GetKeyState(VK_CAPITAL) & 0x0001) ? LockMask : 0;
}
if ((wParam == VK_NUMLOCK)
&& (message == WM_SYSKEYDOWN || message == WM_KEYDOWN)) {
state = (prevState ^ (GetKeyState(VK_NUMLOCK) & 0x0001))
? 0 : Mod1Mask;
} else {
state |= (GetKeyState(VK_NUMLOCK) & 0x0001) ? Mod1Mask : 0;
}
if ((wParam == VK_SCROLL)
&& (message == WM_SYSKEYDOWN || message == WM_KEYDOWN)) {
state = (prevState ^ (GetKeyState(VK_SCROLL) & 0x0001))
? 0 : Mod3Mask;
} else {
state |= (GetKeyState(VK_SCROLL) & 0x0001) ? Mod3Mask : 0;
}
/*
* If a mouse button is being pressed or released, we use the previous
* state of the button.
*/
if (message == WM_LBUTTONUP || (message != WM_LBUTTONDOWN
&& GetKeyState(VK_LBUTTON) & 0x8000)) {
state |= Button1Mask;
}
if (message == WM_MBUTTONUP || (message != WM_MBUTTONDOWN
&& GetKeyState(VK_MBUTTON) & 0x8000)) {
state |= Button2Mask;
}
if (message == WM_RBUTTONUP || (message != WM_RBUTTONDOWN
&& GetKeyState(VK_RBUTTON) & 0x8000)) {
state |= Button3Mask;
}
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 ((msg.message == WM_CHAR) && (msg.lParam & 0x20000000)) {
xkey->state = 0;
}
} else {
break;
}
}
}
/*
*----------------------------------------------------------------------
*
* TkWinGetDrawableFromHandle --
*
* Find the drawable associated with the given window handle.
*
* Results:
* Returns a drawable pointer if the window is managed by Tk.
* Otherwise it returns NULL.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
TkWinDrawable *
TkWinGetDrawableFromHandle(hwnd)
HWND hwnd; /* Win32 window handle */
{
Tcl_HashEntry *hPtr;
hPtr = Tcl_FindHashEntry(&windowTable, (char *)hwnd);
if (hPtr) {
return (TkWinDrawable *)Tcl_GetHashValue(hPtr);
}
return NULL;
}
/*
*----------------------------------------------------------------------
*
* DeleteWindow --
*
* Remove a window from the window table, and free the resources
* associated with the drawable.
*
* Results:
* None.
*
* Side effects:
* Frees the resources associated with a window handle.
*
*----------------------------------------------------------------------
*/
static void
DeleteWindow(hwnd)
HWND hwnd;
{
TkWinDrawable *twdPtr;
Tcl_HashEntry *hPtr;
/*
* Remove the window from the window table.
*/
hPtr = Tcl_FindHashEntry(&windowTable, (char *)hwnd);
if (hPtr) {
Tcl_DeleteHashEntry(hPtr);
}
/*
* Free the drawable associated with this window, unless the drawable
* is still in use by a TkWindow. This only happens in the case of
* a top level window, since the window gets destroyed when the
* decorative frame is destroyed.
*/
twdPtr = (TkWinDrawable *) GetWindowLong(hwnd, GWL_USERDATA);
if (twdPtr) {
if (twdPtr->window.winPtr == NULL) {
ckfree((char *) twdPtr);
} else if (!(twdPtr->window.winPtr->flags & TK_TOP_LEVEL)) {
panic("Non-toplevel window destroyed before its drawable");
} else {
twdPtr->window.handle = NULL;
}
}
}
/*
*----------------------------------------------------------------------
*
* Tk_FreeXId --
*
* This inteface is not needed under Windows.
*
* Results:
* None.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
void
Tk_FreeXId(display, xid)
Display *display;
XID xid;
{
}
/*----------------------------------------------------------------------
* TkWinEnterModalLoop --
*
* Notifies the Windows event handler that TK is about to enter a
* modal loop. Window Events are handled immediately if TK has
* enter a modal loop.
*
* Results:
* None.
*
* Side effects:
* The isInModal counter is incremented.
*
*----------------------------------------------------------------------
*/
void TkWinEnterModalLoop(interp)
Tcl_Interp * interp;
{
isInModal ++;
}
/*----------------------------------------------------------------------
* TkWinLeaveModalLoop --
*
* Complement to the TkWinEnterModalLoop function.
*
* Results:
* None.
*
* Side effects:
* The isInModal counter is decremented.
*
*----------------------------------------------------------------------
*/
void TkWinLeaveModalLoop(interp)
Tcl_Interp * interp;
{
isInModal --;
}
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