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Cleanups

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FossilOrigin-Name: 18f5bc27008df76f43baf527a81920ba2464ba97
This commit is contained in:
kostas
2012-05-03 09:03:18 +00:00
parent 3b93a022d2
commit 4e80941615
4 changed files with 88 additions and 104 deletions
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174
Utils.cpp
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@ -41,99 +41,8 @@ static bool DialogQueryText(QWidget *parent, const QString &title, const QString
#ifdef Q_WS_WIN
// Explorer File Context Menu support. Based on http://www.microsoft.com/msj/0497/wicked/wicked0497.aspx
#include <shlobj.h>
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// FUNCTION: GetNextItem
//
// DESCRIPTION: Finds the next item in an item ID list.
//
// INPUT: pidl = Pointer to an item ID list.
//
// RETURNS: Pointer to the next item.
//
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
LPITEMIDLIST GetNextItem (LPITEMIDLIST pidl)
{
USHORT nLen;
if ((nLen = pidl->mkid.cb) == 0)
return NULL;
return (LPITEMIDLIST) (((LPBYTE) pidl) + nLen);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// FUNCTION: GetItemCount
//
// DESCRIPTION: Computes the number of item IDs in an item ID list.
//
// INPUT: pidl = Pointer to an item ID list.
//
// RETURNS: Number of item IDs in the list.
//
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
UINT GetItemCount (LPITEMIDLIST pidl)
{
USHORT nLen;
UINT nCount;
nCount = 0;
while ((nLen = pidl->mkid.cb) != 0) {
pidl = GetNextItem (pidl);
nCount++;
}
return nCount;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// FUNCTION: DuplicateItem
//
// DESCRIPTION: Makes a copy of the next item in an item ID list.
//
// INPUT: pMalloc = Pointer to an IMalloc interface.
// pidl = Pointer to an item ID list.
//
// RETURNS: Pointer to an ITEMIDLIST containing the copied item ID.
//
// NOTES: It is the caller's responsibility to free the memory
// allocated by this function when the item ID is no longer
// needed. Example:
//
// pidlItem = DuplicateItem (pMalloc, pidl);
// .
// .
// .
// pMalloc->lpVtbl->Free (pMalloc, pidlItem);
//
// Failure to free the ITEMIDLIST will result in memory
// leaks.
//
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
LPITEMIDLIST DuplicateItem (LPMALLOC pMalloc, LPITEMIDLIST pidl)
{
USHORT nLen;
LPITEMIDLIST pidlNew;
nLen = pidl->mkid.cb;
if (nLen == 0)
return NULL;
pidlNew = (LPITEMIDLIST) pMalloc->Alloc (
nLen + sizeof (USHORT));
if (pidlNew == NULL)
return NULL;
CopyMemory (pidlNew, pidl, nLen);
*((USHORT*) (((LPBYTE) pidlNew) + nLen)) = 0;
return pidlNew;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// FUNCTION: DoExplorerMenu
@ -155,9 +64,84 @@ LPITEMIDLIST DuplicateItem (LPMALLOC pMalloc, LPITEMIDLIST pidl)
// RETURNS: TRUE if successful, FALSE if not.
//
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bool ShowExplorerMenu(HWND hwnd, const QString &path, const QPoint &qpoint)
{
struct Util
{
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// FUNCTION: GetNextItem
// DESCRIPTION: Finds the next item in an item ID list.
// INPUT: pidl = Pointer to an item ID list.
// RETURNS: Pointer to the next item.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
static LPITEMIDLIST GetNextItem (LPITEMIDLIST pidl)
{
USHORT nLen;
if ((nLen = pidl->mkid.cb) == 0)
return NULL;
return (LPITEMIDLIST) (((LPBYTE) pidl) + nLen);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// FUNCTION: GetItemCount
// DESCRIPTION: Computes the number of item IDs in an item ID list.
// INPUT: pidl = Pointer to an item ID list.
// RETURNS: Number of item IDs in the list.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
static UINT GetItemCount (LPITEMIDLIST pidl)
{
USHORT nLen;
UINT nCount;
nCount = 0;
while ((nLen = pidl->mkid.cb) != 0) {
pidl = GetNextItem (pidl);
nCount++;
}
return nCount;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// FUNCTION: DuplicateItem
// DESCRIPTION: Makes a copy of the next item in an item ID list.
// INPUT: pMalloc = Pointer to an IMalloc interface.
// pidl = Pointer to an item ID list.
// RETURNS: Pointer to an ITEMIDLIST containing the copied item ID.
// NOTES: It is the caller's responsibility to free the memory
// allocated by this function when the item ID is no longer
// needed. Example:
// pidlItem = DuplicateItem (pMalloc, pidl);
// .
// .
// .
// pMalloc->lpVtbl->Free (pMalloc, pidlItem);
// Failure to free the ITEMIDLIST will result in memory
// leaks.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
static LPITEMIDLIST DuplicateItem (LPMALLOC pMalloc, LPITEMIDLIST pidl)
{
USHORT nLen;
LPITEMIDLIST pidlNew;
nLen = pidl->mkid.cb;
if (nLen == 0)
return NULL;
pidlNew = (LPITEMIDLIST) pMalloc->Alloc (
nLen + sizeof (USHORT));
if (pidlNew == NULL)
return NULL;
CopyMemory (pidlNew, pidl, nLen);
*((USHORT*) (((LPBYTE) pidlNew) + nLen)) = 0;
return pidlNew;
}
};
LPITEMIDLIST pidlMain, pidlItem, pidlNextItem, *ppidl;
UINT nCount;
POINT point;
@ -192,7 +176,7 @@ bool ShowExplorerMenu(HWND hwnd, const QString &path, const QPoint &qpoint)
if (SUCCEEDED (psfFolder->ParseDisplayName (hwnd,
NULL, wchPath, &ulCount, &pidlMain, &ulAttr)) && (pidlMain != NULL)) {
if ( (nCount = GetItemCount (pidlMain))>0) { // nCount must be > 0
if ( (nCount = Util::GetItemCount (pidlMain))>0) { // nCount must be > 0
//
// Initialize psfFolder with a pointer to the IShellFolder
// interface of the folder that contains the item whose context
@ -207,7 +191,7 @@ bool ShowExplorerMenu(HWND hwnd, const QString &path, const QPoint &qpoint)
//
// Create a 1-item item ID list for the next item in pidlMain.
//
pidlNextItem = DuplicateItem (pMalloc, pidlItem);
pidlNextItem = Util::DuplicateItem (pMalloc, pidlItem);
if (pidlNextItem == NULL) {
pMalloc->Free(pidlMain);
psfFolder->Release ();
@ -242,7 +226,7 @@ bool ShowExplorerMenu(HWND hwnd, const QString &path, const QPoint &qpoint)
// to the next item in pidlMain.
//
pMalloc->Free(pidlNextItem);
pidlItem = GetNextItem (pidlItem);
pidlItem = Util::GetNextItem (pidlItem);
}
//