167 lines
5 KiB
C++
167 lines
5 KiB
C++
/*
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* GETICON.CPP
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*
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* Functions to create DVASPECT_ICON metafile from filename or classname.
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*
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* OleMetafilePictFromIconAndLabel
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*
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* (c) Copyright Microsoft Corp. 1992-1993 All Rights Reserved
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*/
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/*******
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*
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* ICON (DVASPECT_ICON) METAFILE FORMAT:
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*
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* The metafile generated with OleMetafilePictFromIconAndLabel contains
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* the following records which are used by the functions in DRAWICON.CPP
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* to draw the icon with and without the label and to extract the icon,
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* label, and icon source/index.
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*
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* SetWindowOrg
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* SetWindowExt
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* DrawIcon:
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* Inserts records of DIBBITBLT or DIBSTRETCHBLT, once for the
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* AND mask, one for the image bits.
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* Escape with the comment "IconOnly"
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* This indicates where to stop record enumeration to draw only
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* the icon.
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* SetTextColor
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* SetTextAlign
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* SetBkColor
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* CreateFont
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* SelectObject on the font.
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* ExtTextOut
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* One or more ExtTextOuts occur if the label is wrapped. The
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* text in these records is used to extract the label.
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* SelectObject on the old font.
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* DeleteObject on the font.
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* Escape with a comment that contains the path to the icon source.
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* Escape with a comment that is the ASCII of the icon index.
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*
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*******/
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#include "precomp.h"
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#include "common.h"
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <commdlg.h>
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#include <memory.h>
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#include <cderr.h>
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#include "utility.h"
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OLEDBGDATA
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static const TCHAR szSeparators[] = TEXT(" \t\\/!:");
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#define IS_SEPARATOR(c) ( (c) == ' ' || (c) == '\\' \
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|| (c) == '/' || (c) == '\t' \
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|| (c) == '!' || (c) == ':')
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#define IS_FILENAME_DELIM(c) ( (c) == '\\' || (c) == '/' || (c) == ':' )
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#define IS_SPACE(c) ( (c) == ' ' || (c) == '\t' || (c) == '\n' )
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/*
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* GetAssociatedExecutable
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*
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* Purpose: Finds the executable associated with the provided extension
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*
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* Parameters:
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* lpszExtension LPSTR points to the extension we're trying to find
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* an exe for. Does **NO** validation.
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*
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* lpszExecutable LPSTR points to where the exe name will be returned.
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* No validation here either - pass in 128 char buffer.
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*
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* Return:
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* BOOL TRUE if we found an exe, FALSE if we didn't.
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*
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*/
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BOOL FAR PASCAL GetAssociatedExecutable(LPTSTR lpszExtension, LPTSTR lpszExecutable)
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{
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HKEY hKey;
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LRESULT lRet = RegOpenKey(HKEY_CLASSES_ROOT, NULL, &hKey);
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if (ERROR_SUCCESS != lRet)
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return FALSE;
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LONG dw = MAX_PATH_SIZE;
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TCHAR szValue[OLEUI_CCHKEYMAX];
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lRet = RegQueryValue(hKey, lpszExtension, szValue, &dw); //ProgId
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if (ERROR_SUCCESS != lRet)
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{
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RegCloseKey(hKey);
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return FALSE;
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}
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// szValue now has ProgID
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TCHAR szKey[OLEUI_CCHKEYMAX];
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lstrcpy(szKey, szValue);
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lstrcat(szKey, TEXT("\\Shell\\Open\\Command"));
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dw = MAX_PATH_SIZE;
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lRet = RegQueryValue(hKey, szKey, szValue, &dw);
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if (ERROR_SUCCESS != lRet)
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{
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RegCloseKey(hKey);
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return FALSE;
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}
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// szValue now has an executable name in it. Let's null-terminate
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// at the first post-executable space (so we don't have cmd line
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// args.
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LPTSTR lpszTemp = szValue;
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while ('\0' != *lpszTemp && IS_SPACE(*lpszTemp))
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lpszTemp = CharNext(lpszTemp); // Strip off leading spaces
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LPTSTR lpszExe = lpszTemp;
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while ('\0' != *lpszTemp && !IS_SPACE(*lpszTemp))
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lpszTemp = CharNext(lpszTemp); // Step through exe name
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*lpszTemp = '\0'; // null terminate at first space (or at end).
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lstrcpy(lpszExecutable, lpszExe);
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return TRUE;
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}
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/*
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* PointerToNthField
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*
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* Purpose:
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* Returns a pointer to the beginning of the nth field.
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* Assumes null-terminated string.
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*
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* Parameters:
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* lpszString string to parse
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* nField field to return starting index of.
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* chDelimiter char that delimits fields
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*
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* Return Value:
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* LPSTR pointer to beginning of nField field.
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* NOTE: If the null terminator is found
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* Before we find the Nth field, then
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* we return a pointer to the null terminator -
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* calling app should be sure to check for
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* this case.
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*
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*/
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LPTSTR FAR PASCAL PointerToNthField(LPTSTR lpszString, int nField, TCHAR chDelimiter)
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{
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if (1 == nField)
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return lpszString;
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int cFieldFound = 1;
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LPTSTR lpField = lpszString;
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while (*lpField != '\0')
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{
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if (*lpField++ == chDelimiter)
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{
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cFieldFound++;
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if (nField == cFieldFound)
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return lpField;
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}
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}
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return lpField;
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}
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