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Microsoft Windows NT Build 511 (DDK SDK) 11-01-1993
/******************************************************************************\
* This is a part of the Microsoft Source Code Samples.
* Copyright (C) 1993 Microsoft Corporation.
* All rights reserved.
* This source code is only intended as a supplement to
* Microsoft Development Tools and/or WinHelp documentation.
* See these sources for detailed information regarding the
* Microsoft samples programs.
\******************************************************************************/
/*****************************************************************************\
*
* Module: wprintf.c
*
* Contains the routines for using printf windows
*
* Functions:
*
* MyCreatePrintfWin()
* SetPrintFont()
* SetPrintfTabs()
* ClearPrintfWindow()
* CopyToClipboard()
* IsPrintfEmpty()
* PrintfWndProc()
* DebugPaint()
* InsertString()
* DebugHScroll()
* DebugVScroll()
* SetWindowClass()
* LinesInDebugWindow()
* CharsInDebugWindow()
* wprintfSetScrollRange()
* NewLine()
*
* Comments:
*
\*****************************************************************************/
#include "spy.h"
/*****************************************************************************\
*
* g e n e r a l c o n s t a n t s
*
\*****************************************************************************/
#define MAXBUFLEN 200 /* Maximum string length for wprintf */
#define FIRST(pTxt) ((pTxt)->iFirst)
#define TOP(pTxt) (((pTxt)->iFirst + (pTxt)->iTop) % (pTxt)->iMaxLines)
#define LAST(pTxt) (((pTxt)->iFirst + (pTxt)->iCount-1) % (pTxt)->iMaxLines)
#define INC(pTxt,x) ((x) = ++(x) % (pTxt)->iMaxLines)
#define DEC(pTxt,x) ((x) = --(x) % (pTxt)->iMaxLines)
#define OFFSETX (pTxt->Tdx/2)
#define OFFSETY 1
#define VARSIZE 1
#define BOUND(x,mn,mx) ((x) < (mn) ? (mn) : ((x) > (mx) ? (mx) : (x)))
#define FTwixtI3(l,x,h) ((x)>=(l) && (x<=h))
#define EnterCrit(p) EnterCriticalSection(&p->csSync)
#define LeaveCrit(p) LeaveCriticalSection(&p->csSync)
/*****************************************************************************\
*
* g l o b a l v a r i a b l e s
*
\*****************************************************************************/
typedef struct {
INT iLen;
CHAR * *hText;
} LINE;
struct TEXT_STRUCT {
CRITICAL_SECTION csSync; // CritSect to sync the threads
INT iFirst; /* First line in queue */
INT iCount; /* Number of lines in queue */
INT iTop; /* Line at top of window */
INT iLeft; /* X offset of the window */
INT MaxLen; /* Max String Length */
INT iMaxLines; /* max number of LINEs */
HFONT hFont; /* Font to draw with */
DWORD Tdx, Tdy; /* Font Size */
LINE arLines[VARSIZE]; /* array of iMaxLines LINEs */
};
typedef struct TEXT_STRUCT *PTXT; /* pointer to a text struct */
typedef PTXT *HTXT; /* Handle to a text struct */
PRIVATE INT iSem = 0;
INT tabs[20];
INT nTabs = 0;
/*****************************************************************************\
*
* f u n c t i o n d e f i n i t i o n s
*
\*****************************************************************************/
LONG APIENTRY PrintfWndProc(HWND, UINT, WPARAM, LONG);
PRIVATE VOID DebugPaint(HWND hwnd, LPPAINTSTRUCT pps);
PRIVATE INT InsertString (PTXT, CHAR *);
PRIVATE VOID DebugHScroll(HWND, PTXT, INT);
PRIVATE VOID DebugVScroll(HWND, PTXT, INT);
PRIVATE BOOL SetWindowClass (HANDLE, LPSTR);
PRIVATE INT LinesInDebugWindow (HWND);
PRIVATE INT CharsInDebugWindow (HWND);
PRIVATE VOID wprintfSetScrollRange (HWND, BOOL);
PRIVATE VOID NewLine (PTXT pTxt);
/*****************************************************************************\
* MyCreatePrintfWin
*
* Creates a window to printf to.
*
* Arguments:
* HWND hwnd - handle to the parent window
*
* Returns:
* VOID
\*****************************************************************************/
VOID
MyCreatePrintfWin(
HWND hwnd
)
{
RECT rc;
if (ghwndPrintf)
DestroyWindow(ghwndPrintf);
GetClientRect(hwnd, &rc);
ghwndPrintf = CreatePrintfWin(hwnd, ghInst, "", WS_CHILD | WS_VSCROLL |
WS_HSCROLL, -gcxBorder, -gcyBorder, rc.right + (2 *gcxBorder),
rc.bottom + (2 * gcyBorder), gnLines);
}
/*****************************************************************************\
* DebugPaint(hwnd, pps)
*
* The paint function.
*
* Arguments:
* HWND hwnd - Window to paint to.
* LPPAINTSTRUCT - pps
*
* Returns:
* nothing
*
\*****************************************************************************/
PRIVATE VOID
DebugPaint(
HWND hwnd,
LPPAINTSTRUCT pps
)
{
PTXT pTxt;
HTXT hTxt;
INT iQueue;
INT xco;
INT yco;
INT iLast;
HBRUSH hb;
COLORREF c;
hTxt = (HTXT)GetWindowLong(hwnd, 0);
pTxt = *hTxt;
SetTextColor(pps->hdc, GetSysColor(COLOR_WINDOWTEXT));
c = GetSysColor(COLOR_WINDOW);
SetBkColor(pps->hdc, c);
hb = CreateSolidBrush(c);
if (pTxt->hFont)
SelectObject(pps->hdc, pTxt->hFont);
iLast = LAST(pTxt);
iQueue = TOP(pTxt);
xco = OFFSETX - pTxt->iLeft * pTxt->Tdx;
yco = OFFSETY;
for (;;)
{
if (FTwixtI3((INT)pps->rcPaint.top, yco,(INT)pps->rcPaint.bottom)
|| FTwixtI3((INT)pps->rcPaint.top, yco + (INT)pTxt->Tdy, (INT)pps->rcPaint.bottom))
{
if (pTxt->arLines[iQueue].hText == NULL
|| (LPSTR)*(pTxt->arLines[iQueue].hText) == NULL)
{
RECT rcT;
rcT.top = yco;
rcT.bottom = yco+pTxt->Tdy;
rcT.left = pps->rcPaint.left;
rcT.right = pps->rcPaint.right;
FillRect(pps->hdc, &rcT, hb);
}
else
{
TabbedTextOut(pps->hdc, xco, yco,
(LPSTR)*(pTxt->arLines[iQueue].hText),
pTxt->arLines[iQueue].iLen, nTabs, tabs, xco);
}
}
if (iQueue == iLast)
break;
yco += pTxt->Tdy;
INC(pTxt, iQueue);
}
DeleteObject((HANDLE)hb);
}
/*****************************************************************************\
* SetWindowClass (hInstance)
*
* Registers the window class of the printf window
*
* Arguments:
* HANDLE hInstance - instance handle of current instance
* LPSTR lpch - pointer to class name
*
* Returns:
* TRUE if successful, FALSE if not
\*****************************************************************************/
PRIVATE BOOL
SetWindowClass(
HANDLE hInstance,
LPSTR lpch
)
{
WNDCLASS wc;
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = PrintfWndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = sizeof(HANDLE);
wc.hInstance = hInstance;
wc.hIcon = NULL;
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wc.lpszMenuName = NULL;
wc.lpszClassName = lpch;
return RegisterClass(&wc);
}
/*****************************************************************************\
* CreatePrintfWin (hParent, lpchName, dwStyle, x, y, dx, dy, iMaxLines)
*
* Creates a window for the depositing of debuging messages.
*
* Arguments:
* HWND hParent - Window handle of the parent window.
* HANDLE hInstance - Module instance handle.
* lPSTR lpchName - String to appear in the caption bar of the debuging window
* DWORD dwStyle - Window style
* INT x,y - Location of window
* INT dx,dy - Size of the window
* INT iMaxLines - The maximum number of text lines to display in the window
*
* Returns:
* A window handle of the debuging window, or NULL if a error occured.
\*****************************************************************************/
PUBLIC HWND APIENTRY
CreatePrintfWin (
HWND hParent,
HANDLE hInstance,
LPSTR lpchName,
DWORD dwStyle,
INT x,
INT y,
INT dx,
INT dy,
INT iMaxLines
)
{
static BOOL bClass = FALSE; /* Is the class registered */
HWND hwnd;
HTXT hTxt; /* handle to a debuging window struct */
PTXT pTxt;
static CHAR achClass[40];
/*
* Make a Class name that is unique across instances
*/
if (!bClass++) {
wsprintf(achClass, "WPRINTF_%4.4X", hInstance);
SetWindowClass(hInstance, achClass);
}
/* Allocate the window long before create the window, such that the
window proc can find the window long during the create. */
hTxt = (HTXT)LocalAlloc(LHND, sizeof(struct TEXT_STRUCT) + (iMaxLines
- VARSIZE) * sizeof(LINE));
if (!hTxt) {
return FALSE;
}
pTxt = *hTxt;
InitializeCriticalSection(&pTxt->csSync);
pTxt->iFirst = 0; /* Set the queue up to have 1 NULL line */
pTxt->iCount = 1;
pTxt->iTop = 0;
pTxt->iLeft = 0;
pTxt->MaxLen = 0;
pTxt->iMaxLines = iMaxLines;
pTxt->arLines[0].hText = NULL;
pTxt->arLines[0].iLen = 0;
hwnd = CreateWindow((LPSTR)achClass, (LPSTR)lpchName, dwStyle, x, y,
dx, dy, (HWND)hParent, /* parent window */
(HMENU)NULL, /* use class menu */
(HANDLE)hInstance, /* handle to window instance */
(LPSTR)hTxt /* used by WM_CREATE to set the window long */
);
if (!hwnd) {
return FALSE;
}
wprintfSetScrollRange(hwnd, FALSE);
/* Make window visible */
ShowWindow(hwnd, SHOW_OPENWINDOW);
return hwnd;
}
/*****************************************************************************\
* SetPrintfFont (hwnd,hFont)
*
* Sets the font for the printf window.
*
* Arguments:
* HWND hwnd - Window handle of the printf window.
* HFONT hFont - Font handle
*
* Returns:
*
\*****************************************************************************/
VOID
SetPrintfFont(
HWND hwnd,
HFONT hfont
)
{
PTXT pTxt;
HDC hDC;
TEXTMETRIC tm;
HFONT hfontOld;
pTxt = *(HTXT)GetWindowLong(hwnd, 0);
pTxt->hFont = hfont;
/* Find out the size of a Char in the font */
hDC = GetDC(hwnd);
hfontOld = SelectObject(hDC, hfont);
DeleteObject(hfontOld);
GetTextMetrics(hDC, &tm);
pTxt->Tdy = tm.tmHeight;
pTxt->Tdx = tm.tmAveCharWidth;
ReleaseDC(hwnd, hDC);
CalculatePrintfTabs(hfont);
InvalidateRect(hwnd, NULL, TRUE);
UpdateWindow(hwnd);
}
/*****************************************************************************\
* SetPrintfTabs
*
* Sets the Tabstops in the printf window.
*
* Arguments:
* INT n - number of tabs to set.
* LPINT pTabs - arrays of tabstops
*
* Returns:
* VOID
\*****************************************************************************/
VOID
SetPrintfTabs(
INT n,
LPINT pTabs
)
{
INT i;
nTabs = n;
for (i = 0; i < nTabs; i++)
tabs[i] = *pTabs++;
}
/*****************************************************************************\
* ClearPrintfWindow
*
* Clears all text from the window
*
* Arguments:
* HWND hwnd - window handle for the Degubing window
*
* Returns:
* VOID
\*****************************************************************************/
VOID
ClearPrintfWindow(
HWND hwnd
)
{
INT i, iQueue;
PTXT pTxt;
HTXT hTxt;
if (hwnd != NULL && IsWindow(hwnd)) {
hTxt = (HTXT)GetWindowLong(hwnd, 0);
pTxt = *hTxt;
EnterCrit(pTxt);
iQueue = TOP(pTxt);
for (i = 0; i < (pTxt)->iCount; i++, INC(pTxt, iQueue))
if ((pTxt)->arLines[iQueue].hText != NULL) {
LocalFree ((HANDLE)pTxt->arLines[iQueue].hText);
pTxt->arLines[iQueue].hText = NULL;
}
pTxt->iFirst = 0; /* Set the queue up to have 1 NULL line */
pTxt->iCount = 1;
pTxt->iTop = 0;
pTxt->iLeft = 0;
pTxt->MaxLen = 0;
pTxt->arLines[0].hText = NULL;
pTxt->arLines[0].iLen = 0;
wprintfSetScrollRange(hwnd, FALSE);
InvalidateRect(hwnd, NULL, TRUE);
LeaveCrit(pTxt);
}
}
/*****************************************************************************\
* PrintfWndProc( hwnd, uiMessage, wParam, lParam )
*
* The window proc for the debugging window. This processes all
* of the window's messages.
*
* Arguments:
* HWND hwnd - window handle for the parent window
* UINT uiMessage -message number
* WPARAM wParam - message-dependent
* LPARAM lParam - message-dependent
*
* Returns:
* 0 if processed, nonzero if ignored
\*****************************************************************************/
PUBLIC LONG APIENTRY
PrintfWndProc(
HWND hwnd,
UINT uiMessage,
WPARAM wParam,
LONG lParam
)
{
PAINTSTRUCT rPS;
HTXT hTxt;
PTXT pTxt;
hTxt = (HTXT)GetWindowLong(hwnd, 0);
if ( hTxt ) {
pTxt = *hTxt;
}
switch (uiMessage) {
case WM_CREATE:
{
/* set the WindowLong before any other message tries to
* reference it during the create of a window
*/
LPCREATESTRUCT csWindowLong = (LPCREATESTRUCT) lParam;
hTxt = (HTXT)csWindowLong->lpCreateParams;
SetWindowLong(hwnd, 0, (LONG)hTxt);
SetPrintfFont(hwnd, ghfontPrintf);
wprintfSetScrollRange(hwnd, FALSE);
}
break;
case WM_DESTROY:
{
INT i, iQueue;
EnterCrit(pTxt);
iQueue = TOP(pTxt);
for (i = 0; i < (pTxt)->iCount; i++, INC(pTxt, iQueue))
if ((pTxt)->arLines[iQueue].hText != NULL) {
LocalFree ((HANDLE)(pTxt)->arLines[iQueue].hText);
pTxt->arLines[iQueue].hText = NULL;
}
LeaveCrit(pTxt);
DeleteCriticalSection(&pTxt->csSync);
LocalFree((HANDLE)hTxt);
break;
}
case WM_SIZE:
EnterCrit(pTxt);
if (!iSem) {
wprintfSetScrollRange(hwnd, TRUE);
}
DebugVScroll(hwnd, pTxt, 0);
LeaveCrit(pTxt);
break;
case WM_VSCROLL:
EnterCrit(pTxt);
switch (LOWORD(wParam)) {
case SB_LINEDOWN:
DebugVScroll(hwnd, pTxt, 1);
break;
case SB_LINEUP:
DebugVScroll(hwnd, pTxt, -1);
break;
case SB_PAGEUP:
DebugVScroll(hwnd, pTxt, -LinesInDebugWindow(hwnd));
break;
case SB_PAGEDOWN:
DebugVScroll(hwnd, pTxt, LinesInDebugWindow(hwnd));
break;
case SB_THUMBTRACK:
case SB_THUMBPOSITION:
DebugVScroll(hwnd, pTxt, HIWORD(wParam) - pTxt->iTop);
break;
case SB_ENDSCROLL:
break;
}
LeaveCrit(pTxt);
break;
case WM_HSCROLL:
EnterCrit(pTxt);
switch (LOWORD(wParam)) {
case SB_LINEDOWN:
DebugHScroll (hwnd, pTxt, 1);
break;
case SB_LINEUP:
DebugHScroll (hwnd, pTxt, -1);
break;
case SB_PAGEUP:
DebugHScroll (hwnd, pTxt, -CharsInDebugWindow(hwnd));
break;
case SB_PAGEDOWN:
DebugHScroll (hwnd, pTxt, CharsInDebugWindow(hwnd));
break;
case SB_THUMBTRACK:
case SB_THUMBPOSITION:
DebugHScroll(hwnd, pTxt, HIWORD(wParam) - pTxt->iLeft);
break;
case SB_ENDSCROLL:
break;
}
LeaveCrit(pTxt);
break;
case WM_PAINT:
EnterCrit(pTxt);
BeginPaint(hwnd, (LPPAINTSTRUCT) & rPS);
DebugPaint(hwnd, &rPS);
EndPaint(hwnd, (LPPAINTSTRUCT) & rPS);
LeaveCrit(pTxt);
break;
case WM_KEYDOWN:
EnterCrit(pTxt);
switch (wParam) {
case VK_UP:
DebugVScroll(hwnd, pTxt, -1);
break;
case VK_DOWN:
DebugVScroll(hwnd, pTxt, 1);
break;
case VK_PRIOR:
DebugVScroll(hwnd, pTxt, -LinesInDebugWindow(hwnd));
break;
case VK_NEXT:
DebugVScroll(hwnd, pTxt, LinesInDebugWindow(hwnd));
break;
case VK_LEFT:
DebugHScroll(hwnd, pTxt, -1);
break;
case VK_RIGHT:
DebugHScroll(hwnd, pTxt, 1);
break;
}
LeaveCrit(pTxt);
break;
case WM_KEYUP:
break;
default:
return DefWindowProc(hwnd, uiMessage, wParam, lParam);
}
return 0L;
}
/*****************************************************************************\
* DebugScroll
*
* Scrolls the debug window vertically
*
* Arguments:
* HWND hwnd - handle to the debug window
* PTXT pTxt - pointer to the text to scroll
* INT n - number of lines to scroll
*
* Returns:
* VOID
\*****************************************************************************/
PRIVATE VOID
DebugVScroll(
HWND hwnd,
PTXT pTxt,
INT n
)
{
RECT rect;
INT iMinPos, iMaxPos;
GetScrollRange(hwnd, SB_VERT, (LPINT) &iMinPos, (LPINT) &iMaxPos);
GetClientRect(hwnd, (LPRECT) &rect);
rect.left += OFFSETX;
rect.top += OFFSETY;
n = BOUND(pTxt->iTop + n, iMinPos, iMaxPos) - pTxt->iTop;
if (n == 0)
return;
pTxt->iTop += n;
ScrollWindow(hwnd, 0, -n * pTxt->Tdy, (LPRECT) &rect, (LPRECT) &rect);
SetScrollPos(hwnd, SB_VERT, pTxt->iTop, TRUE);
}
/*****************************************************************************\
* DebugHScroll
*
* Performs the horizontal scroll calculations
*
* Arguments:
* HWND hwnd - handle to the debug window
* PTXT pTxt - pointer to the text to scroll
* INT n - number of characters to scroll
*
* Returns:
* VOID
\*****************************************************************************/
PRIVATE VOID
DebugHScroll(
HWND hwnd,
PTXT pTxt,
INT n
)
{
RECT rect;
INT iMinPos, iMaxPos;
GetScrollRange (hwnd, SB_HORZ, (LPINT) &iMinPos, (LPINT) &iMaxPos);
GetClientRect (hwnd, (LPRECT) & rect);
rect.left += OFFSETX;
rect.top += OFFSETY;
n = BOUND(pTxt->iLeft + n, iMinPos, iMaxPos) - pTxt->iLeft;
if (n == 0)
return;
pTxt->iLeft += n;
ScrollWindow(hwnd, -n * pTxt->Tdx, 0, (LPRECT) & rect, (LPRECT) & rect);
SetScrollPos(hwnd, SB_HORZ, pTxt->iLeft, TRUE);
}
/*****************************************************************************\
* LinesInDebugWindow
*
* Calculates the number of lines in the debug window
*
* Arguments:
* HWND hwnd - handle to the debug window
*
* Returns:
* INT - number of lines in the debug window
\*****************************************************************************/
PRIVATE INT
LinesInDebugWindow (
HWND hwnd
)
{
RECT CRect;
PTXT pTxt;
pTxt = *(HTXT)GetWindowLong(hwnd, 0);
GetClientRect(hwnd, &CRect);
if ( pTxt->Tdy == 0 ) {
return 0;
}
return pTxt ? (CRect.bottom - CRect.top - OFFSETY) / pTxt->Tdy : 0;
}
/*****************************************************************************\
* CharsInDebugWindow
*
* Calculates the number of characters horizontally in the debug window
*
* Arguments:
* HWND hwnd - handle to the debug window
*
* Returns:
* INT - number of horizontal characters in the debug window
\*****************************************************************************/
PRIVATE INT
CharsInDebugWindow (
HWND hwnd
)
{
RECT CRect;
PTXT pTxt;
pTxt = *(HTXT)GetWindowLong (hwnd, 0);
GetClientRect(hwnd, (LPRECT) & CRect);
if ( pTxt->Tdx == 0 ) {
return 0;
}
return pTxt ? (CRect.right - CRect.left - OFFSETX) / pTxt->Tdx : 0;
}
/*****************************************************************************\
* vwprintf
*
* variable printf - works like the C runtime printf
*
* Arguments:
* HWND hwnd - handle to the debug window
* LPSTR format - pointer to the format string
* va_list marker - pointer to marker
*
* Returns:
* INT - number of arguments printed
\*****************************************************************************/
PUBLIC INT FAR cdecl
vwprintf(
HWND hwnd,
LPSTR format,
va_list marker
)
{
static HWND hwndLast = NULL;
static CHAR pchBuf[MAXBUFLEN];
RECT rect;
INT iRet;
INT iLine; // lines of output to show
INT cLine; // lines in the current window
INT cScroll; // how much left to scroll
PTXT pTxt;
HTXT hTxt;
if (hwnd == NULL)
hwnd = hwndLast;
if (hwnd == NULL || !IsWindow(hwnd))
return 0; /* exit if bad window handle */
hwndLast = hwnd;
//
// First format the line and wait until we can play with the Txt structure
//
iRet = wvsprintf((LPSTR)pchBuf, format, marker);
hTxt = (HTXT)GetWindowLong(hwnd, 0);
pTxt = (PTXT)LocalLock((HANDLE)hTxt);
EnterCrit(pTxt);
//
// Number of lines that we can display stuff in
//
cLine = LinesInDebugWindow(hwnd);
//
// Number of lines actually displayed in the current window
//
iLine = pTxt->iCount - pTxt->iTop;
//
// Return value is number of new lines to display
//
cScroll = InsertString(pTxt, pchBuf);
//
// Now make sure the new text is painted only if visable
//
GetClientRect(hwnd, (LPRECT) & rect);
//
// Calculate how much of the window to invalidate
//
rect.top += (iLine - 1) * pTxt->Tdy;
InvalidateRect(hwnd, (LPRECT)&rect, TRUE);
//
// If we have more lines than we can display, scroll the window
// such that the last line printed is now at the bottom
//
if (iLine + cScroll > cLine) {
cScroll = iLine + cScroll - cLine;
DebugVScroll(hwnd, pTxt, cScroll);
LeaveCrit(pTxt);
wprintfSetScrollRange(hwnd, FALSE);
} else {
LeaveCrit(pTxt);
}
LocalUnlock((HANDLE)hTxt);
return(iRet); /* return the count of arguments printed */
}
/*****************************************************************************\
* wprintfSetScrollRange
*
* Sets the scroll range of the debug window
*
* Arguments:
* HWND hwnd - handle to the debug window
* BOOL fRedraw - whether or not to redraw the window
*
* Returns:
* VOID
\*****************************************************************************/
PRIVATE VOID
wprintfSetScrollRange (
HWND hwnd,
BOOL bRedraw
)
{
PTXT pTxt;
INT iRange;
INT iLeftCritSect = 0;
iSem++;
pTxt = *(HTXT)GetWindowLong(hwnd, 0);
/* Update the scroll bars */
iRange = pTxt->iCount - 1 - LinesInDebugWindow(hwnd);
if (iRange < 0) {
iRange = 0;
DebugVScroll(hwnd, pTxt, -pTxt->iTop);
}
while (GetCurrentThreadId() == (DWORD)pTxt->csSync.OwningThread){
LeaveCrit(pTxt);
iLeftCritSect++;
}
SetScrollRange(hwnd, SB_VERT, 0, iRange, FALSE);
SetScrollPos(hwnd, SB_VERT, pTxt->iTop, bRedraw);
if(iLeftCritSect) {
EnterCrit(pTxt);
}
iRange = pTxt->MaxLen - CharsInDebugWindow(hwnd) + 1;
if (iRange < 0) {
iRange = 0;
DebugHScroll(hwnd, pTxt, -pTxt->iLeft);
}
if(iLeftCritSect)
LeaveCrit(pTxt);
SetScrollRange(hwnd, SB_HORZ, 0, iRange, FALSE);
SetScrollPos(hwnd, SB_HORZ, pTxt->iLeft, bRedraw);
while (iLeftCritSect--) {
EnterCrit(pTxt);
}
iSem--;
}
/*****************************************************************************\
* NewLine
*
* Calculates when a new line is needed in the debug window
*
* Arguments:
* PTXT pTxt - pointer to the text
*
* Returns:
* VOID
\*****************************************************************************/
PRIVATE VOID
NewLine (
PTXT pTxt
)
{
INT iLast = LAST(pTxt);
if (pTxt->iCount == pTxt->iMaxLines) {
LocalFree ((HANDLE)pTxt->arLines[pTxt->iFirst].hText);
pTxt->arLines[pTxt->iFirst].hText = NULL;
INC (pTxt, pTxt->iFirst);
if (pTxt->iTop > 0) {
pTxt->iTop--;
}
} else {
pTxt->iCount++;
}
iLast = LAST(pTxt);
pTxt->arLines[iLast].hText = NULL;
pTxt->arLines[iLast].iLen = 0;
}
/*****************************************************************************\
* InsertString
*
* Inserts a string into the debug window
*
* Arguments:
* PTXT pTxt - pointer to the text
* CHAR *str - pointer to insertion string
*
* Returns:
* INT - Line number at which string was inserted
\*****************************************************************************/
PRIVATE INT
InsertString (
PTXT pTxt,
CHAR *str
)
{
CHAR pchBuf[MAXBUFLEN]; /* intermediate buffer */
INT iBuf;
INT iLast = LAST(pTxt);
INT cLine = 0;
for (iBuf = 0; iBuf < pTxt->arLines[iLast].iLen; iBuf++)
pchBuf[iBuf] = (*pTxt->arLines[iLast].hText)[iBuf];
while (*str != '\0') {
while ((*str != '\n') && (*str != '\0'))
pchBuf[iBuf++] = *str++;
if (pTxt->arLines[iLast].hText != NULL)
LocalFree((HANDLE)pTxt->arLines[iLast].hText);
/* Test for the case of a zero length line, Only brian would do this */
if (iBuf == 0)
pTxt->arLines[iLast].hText == NULL;
else {
if ((pTxt->arLines[iLast].hText = (CHAR **)LocalAlloc(LHND, iBuf))
== NULL) {
return 0;
}
}
pTxt->arLines[iLast].iLen = iBuf;
while (--iBuf >= 0 )
(*pTxt->arLines[iLast].hText)[iBuf] = pchBuf[iBuf];
if (*str == '\n') { /* Now do the next string after the \n */
str++;
cLine++;
iBuf = 0;
NewLine(pTxt);
INC(pTxt, iLast);
}
}
return cLine;
}
/*****************************************************************************\
* CopyToClipboard
*
* Copies all lines to the clipboard in text format.
*
* Arguments:
* none
*
* Returns:
* TRUE if successful, FALSE if not.
*
\*****************************************************************************/
BOOL
CopyToClipboard(
VOID
)
{
PTXT pTxt;
INT iQueue;
INT cch;
INT i;
BOOL fSuccess = FALSE;
LPSTR pBuf = NULL;
LPSTR pb;
pTxt = *(HTXT)GetWindowLong(ghwndPrintf, 0);
EnterCrit(pTxt);
iQueue = FIRST(pTxt);
cch = 0;
for (i = 0; i < pTxt->iCount; i++, INC(pTxt, iQueue))
{
if (pTxt->arLines[iQueue].hText != NULL)
{
//
// Count the characters in the line, plus room for the
// carriage return and newline.
//
cch += pTxt->arLines[iQueue].iLen;
cch += 2;
}
}
//
// Add one for the terminating null.
//
cch++;
if (!(pBuf = (LPSTR)GlobalAlloc(GMEM_DDESHARE, cch * sizeof(TCHAR))))
{
LeaveCrit(pTxt);
return FALSE;
}
pb = pBuf;
iQueue = FIRST(pTxt);
for (i = 0; i < pTxt->iCount; i++, INC(pTxt, iQueue))
{
if (pTxt->arLines[iQueue].hText != NULL)
{
lstrcpy(pb, *pTxt->arLines[iQueue].hText);
pb += pTxt->arLines[iQueue].iLen;
*pb++ = '\r';
*pb++ = '\n';
}
}
LeaveCrit(pTxt);
if (OpenClipboard(ghwndSpyApp))
{
EmptyClipboard();
fSuccess = SetClipboardData(CF_TEXT, pBuf) ? TRUE : FALSE;
CloseClipboard();
}
return fSuccess;
}
/*****************************************************************************\
* IsPrintfEmpty
*
* Used to determine if the printf window is empty or not.
*
* Arguments:
* none
*
* Returns:
* TRUE if the printf window is empty, FALSE if there is at least
* one line in the window.
*
\*****************************************************************************/
BOOL
IsPrintfEmpty(
VOID
)
{
PTXT pTxt;
pTxt = *(HTXT)GetWindowLong(ghwndPrintf, 0);
//
// It is empty if the line count is zero (doesn't currently happen)
// or if there is only one line and it is NULL.
//
return (pTxt->iCount == 0 ||
(pTxt->iCount == 1 && pTxt->arLines[FIRST(pTxt)].hText == NULL))
? TRUE : FALSE;
}
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