254 lines
7.0 KiB
C
254 lines
7.0 KiB
C
/*
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* File Open/Create dialogs
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*
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*/
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/*
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* these dialog functions exist because they were written and
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* used before the commmon dialogs existed.
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*
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* they have now been reduced to just calls to the common file dialog
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* functions
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*/
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/*---includes-----------------------------------------------------------*/
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#include <precomp.h>
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#include "gutilsrc.h"
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/*--functions----------------------------------------------------------*/
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/*
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* gfile_open
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* dialog asking the user to select an existing file to open.
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*
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* parameters
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*
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* prompt - message to user indicating purpose of file
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* (to be displayed somewhere in dialog box.
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*
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* ext - default file extension if user enters file without
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* extension.
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*
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* spec - default file spec (eg *.*)
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*
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* pszFull - buffer where full filename (including path) is returned.
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*
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* cchMax - size of pszFull buffer.
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*
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* fn - buffer where filename (just final element) is returned.
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*
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* returns - true if file selected and exists (tested with OF_EXIST).
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* FALSE if dialog cancelled. If user selects a file that we cannot
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* open, we complain and restart the dialog.
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*
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* if TRUE is returned, the file will have been successfully opened,
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* for reading and then closed again.
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*/
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BOOL
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FAR
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PASCAL
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gfile_open(
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HWND hwnd,
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LPSTR prompt,
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LPSTR ext,
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LPSTR spec,
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LPSTR pszFull,
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int cchMax,
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LPSTR fn
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)
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{
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OPENFILENAME ofn;
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char achFilters[MAX_PATH];
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char szTmp[MAX_PATH * 2] = {0};
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HANDLE fh;
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if (!pszFull)
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{
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pszFull = szTmp;
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cchMax = sizeof(szTmp) / sizeof(szTmp[0]);
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}
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if (cchMax < 1)
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return FALSE;
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/* build filter-pair buffer to contain one pair - the spec filter,
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* twice (one of the pair should be the filter, the second should be
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* the title of the filter - we don't have a title so we use the
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* filter both times.
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*/
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_snprintf(achFilters, (sizeof(achFilters)/sizeof(achFilters[0])) - 1, "%s%c%s", spec, 0, spec);
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/*
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* initialise arguments to dialog proc
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*/
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memset(&ofn, 0, sizeof(ofn));
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// GetOpenFileName ang GetSaveFileName unfortunately
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// validate the size of the structue. So we need to lie to
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// the function if we were built for >=Win2000 and
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// running on an earlier OS
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#if (_WIN32_WINNT >= 0x0500)
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ofn.lStructSize = OPENFILENAME_SIZE_VERSION_400;
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#else
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ofn.lStructSize = sizeof(OPENFILENAME);
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#endif
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ofn.hwndOwner = hwnd;
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ofn.hInstance = NULL;
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ofn.lpstrFilter = achFilters;
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ofn.lpstrCustomFilter = NULL;
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ofn.nMaxCustFilter = 0;
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ofn.nFilterIndex = 1; // first filter pair in list
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pszFull[0] = '\0';
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ofn.lpstrFile = pszFull; // we need to get the full path to open
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ofn.nMaxFile = cchMax;
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ofn.lpstrFileTitle = fn; // return final elem of name here
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ofn.nMaxFileTitle = 13; // assume just big enough for 8.3+null
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ofn.lpstrInitialDir = NULL;
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ofn.lpstrTitle = prompt; // dialog title is good place for prompt text
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ofn.Flags = OFN_FILEMUSTEXIST |
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OFN_HIDEREADONLY |
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OFN_PATHMUSTEXIST;
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ofn.lpstrDefExt = ext;
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/*
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* loop until the user cancels, or selects a file that we can open
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*/
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do {
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if (!GetOpenFileName(&ofn)) {
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return(FALSE);
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}
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fh = CreateFile(pszFull, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
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if (fh == INVALID_HANDLE_VALUE) {
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if (MessageBox(NULL, "File Could Not Be Opened", "File Open",
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MB_OKCANCEL|MB_ICONSTOP) == IDCANCEL) {
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return(FALSE);
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}
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}
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} while (fh == INVALID_HANDLE_VALUE);
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CloseHandle(fh);
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return(TRUE);
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}
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/*
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* gfile_new
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* dialog asking the user to name a file for writing to.
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*
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* parameters
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*
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* prompt - message to user indicating purpose of file
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* (to be displayed somewhere in dialog box.
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*
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* ext - default file extension if user enters file without
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* extension.
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*
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* spec - default file spec (eg *.*)
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*
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* pszFull - buffer where full filename (including path) is returned.
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*
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* cchMax - size of pszFull buffer.
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*
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* fn - buffer where filename (just final element) is returned.
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*
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* returns - true if file selected and exists (tested with OF_EXIST).
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* FALSE if dialog cancelled. If user selects a file that we cannot
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* open, we complain and restart the dialog.
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*
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* if TRUE is returned, the file will have been successfully
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* created and opened for writing and then closed again.
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*/
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BOOL
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FAR
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PASCAL
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gfile_new(
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LPSTR prompt,
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LPSTR ext,
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LPSTR spec,
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LPSTR pszFull,
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int cchMax,
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LPSTR fn
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)
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{
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OPENFILENAME ofn;
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char achFilters[MAX_PATH] = {0};
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char szTmp[MAX_PATH * 2];
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HANDLE fh;
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if (!pszFull)
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{
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pszFull = szTmp;
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cchMax = sizeof(szTmp) / sizeof(szTmp[0]);
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}
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if (cchMax < 1)
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return FALSE;
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/* build filter-pair buffer to contain one pair - the spec filter,
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* twice (one of the pair should be the filter, the second should be
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* the title of the filter - we don't have a title so we use the
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* filter both times. remember double null at end of list of strings.
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*/
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_snprintf(achFilters, (sizeof(achFilters)/sizeof(achFilters[0])) - 1, "%s%c%s", spec, 0, spec);
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/*
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* initialise arguments to dialog proc
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*/
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memset(&ofn, 0, sizeof(ofn));
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// GetOpenFileName ang GetSaveFileName unfortunately
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// validate the size of the structue. So we need to lie to
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// the function if we were built for >=Win2000 and
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// running on an earlier OS
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#if (_WIN32_WINNT >= 0x0500)
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ofn.lStructSize = OPENFILENAME_SIZE_VERSION_400;
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#else
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ofn.lStructSize = sizeof(OPENFILENAME);
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#endif
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ofn.hwndOwner = NULL;
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ofn.hInstance = NULL;
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ofn.lpstrFilter = achFilters;
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ofn.lpstrCustomFilter = NULL;
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ofn.nMaxCustFilter = 0;
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ofn.nFilterIndex = 1; // first filter pair in list
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pszFull[0] = '\0';
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ofn.lpstrFile = pszFull; // we need to get the full path to open
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ofn.nMaxFile = cchMax;
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ofn.lpstrFileTitle = fn; // return final elem of name here
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ofn.nMaxFileTitle = 13; // assume just big enough for 8.3+null
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ofn.lpstrInitialDir = NULL;
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ofn.lpstrTitle = prompt; // dialog title is good place for prompt text
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ofn.Flags = OFN_HIDEREADONLY;
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ofn.lpstrDefExt = ext;
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/*
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* loop until the user cancels, or selects a file that we can create/write
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*/
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do {
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if (!GetSaveFileName(&ofn)) {
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return(FALSE);
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}
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fh = CreateFile(pszFull, GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS, 0, NULL);
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if (fh == INVALID_HANDLE_VALUE) {
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if (MessageBox(NULL, "File Could Not Be Created", "File Open",
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MB_OKCANCEL|MB_ICONSTOP) == IDCANCEL) {
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return(FALSE);
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}
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}
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} while (fh == INVALID_HANDLE_VALUE);
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CloseHandle(fh);
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return(TRUE);
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}
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