/****************************************************************************
*
* FUNCTION: GetIconFromInstance
*
* PURPOSE: Callback for enumerating resources in a DLL/EXE
*
* PARAMS: HINSTANCE hInstance - Instance handle for this module
* LPTSTR nIndex - Resource index
*
* RETURNS: HICON - Handle to the icon, NULL for failure
*
* History:
* July '95 - Created
*
\****************************************************************************/
HICON GetIconFromInstance( HINSTANCE hInstance, LPTSTR nIndex )
{
HICON hIcon = NULL;
HRSRC hRsrc = NULL;
HGLOBAL hGlobal = NULL;
LPVOID lpRes = NULL;
int nID;
// Find the group icon
if( (hRsrc = FindResource( hInstance, nIndex, RT_GROUP_ICON )) == NULL )
return NULL;
if( (hGlobal = LoadResource( hInstance, hRsrc )) == NULL )
return NULL;
if( (lpRes = LockResource(hGlobal)) == NULL )
return NULL;
// Find this particular image
nID = LookupIconIdFromDirectory( lpRes, TRUE );
if( (hRsrc = FindResource( hInstance, MAKEINTRESOURCE(nID), RT_ICON )) == NULL )
return NULL;
if( (hGlobal = LoadResource( hInstance, hRsrc )) == NULL )
return NULL;
if( (lpRes = LockResource(hGlobal)) == NULL )
return NULL;
// Let the OS make us an icon
hIcon = CreateIconFromResource( lpRes, SizeofResource(hInstance,hRsrc), TRUE, 0x00030000 );
return hIcon;
}
HICON
LoadLocalizedIcon(const UINT iconId)
{
LANGID langId = GetGUILanguage();
/* find group icon resource */
HRSRC res = FindResourceLang(RT_GROUP_ICON, MAKEINTRESOURCE(iconId), langId);
if (res == NULL)
return NULL;
HGLOBAL resInfo = LoadResource(o.hInstance, res);
if (resInfo == NULL)
return NULL;
int id = LookupIconIdFromDirectory(resInfo, TRUE);
if (id == 0)
return NULL;
/* find the actual icon */
res = FindResourceLang(RT_ICON, MAKEINTRESOURCE(id), langId);
if (res == NULL)
return NULL;
resInfo = LoadResource(o.hInstance, res);
if (resInfo == NULL)
return NULL;
DWORD resSize = SizeofResource(o.hInstance, res);
if (resSize == 0)
return NULL;
return CreateIconFromResource(resInfo, resSize, TRUE, 0x30000);
}
static HICON
LoadLocalizedIconEx(const UINT iconId, int cxDesired, int cyDesired)
{
LANGID langId = GetGUILanguage();
HICON hIcon =
(HICON) LoadImage (o.hInstance, MAKEINTRESOURCE(iconId),
IMAGE_ICON, cxDesired, cyDesired, LR_DEFAULTSIZE|LR_SHARED);
if (hIcon)
return hIcon;
else
PrintDebug (L"Loading icon using LoadImage failed.");
/* Fallback to CreateIconFromResource which always scales
* from the first image in the resource
*/
/* find group icon resource */
HRSRC res = FindResourceLang(RT_GROUP_ICON, MAKEINTRESOURCE(iconId), langId);
if (res == NULL)
return NULL;
HGLOBAL resInfo = LoadResource(o.hInstance, res);
if (resInfo == NULL)
return NULL;
int id = LookupIconIdFromDirectory(resInfo, TRUE);
if (id == 0)
return NULL;
/* find the actual icon */
res = FindResourceLang(RT_ICON, MAKEINTRESOURCE(id), langId);
if (res == NULL)
return NULL;
resInfo = LoadResource(o.hInstance, res);
if (resInfo == NULL)
return NULL;
DWORD resSize = SizeofResource(o.hInstance, res);
if (resSize == 0)
return NULL;
/* Note: this uses the first icon in the resource and scales it */
hIcon = CreateIconFromResourceEx(resInfo, resSize, TRUE, 0x30000,
cxDesired, cyDesired, LR_DEFAULTSIZE|LR_SHARED);
return hIcon;
}
