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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| No
| Import Library
| user32.lib
| Header File
| winuser.h
| Unicode
| No
| Platform Notes
| None
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LookupIconIdFromDirectoryEx
[Now Supported on Windows NT]
The LookupIconIdFromDirectoryEx function searches through icon or cursor data for the icon or cursor that
best fits the current display device.
int LookupIconIdFromDirectoryEx(
PBYTE presbits,
| // address of resource data
| BOOL fIcon,
| // icon or cursor flag
| int cxDesired,
| // desired width of icon or cursor
| int cyDesired,
| // desired height of icon or cursor
| UINT Flags
| // resource flags
| );
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Parameters
presbits
Points to the icon or cursor directory data. Because this function does not
validate the resource data, it causes a general protection (GP) fault or returns
an undefined value if presbits is not pointing to valid resource data.
fIcon
Specifies whether an icon or a cursor is sought. If this parameter is TRUE,
the function is searching for an icon; if the parameter is FALSE, the function is
searching for a cursor.
cxDesired
Specifies the desired width, in pixels, of the icon. If this parameter is
zero, the function uses the SM_CXICON or SM_CXCURSOR system metric value.
cyDesired
Specifies the desired height, in pixels, of the icon. If this parameter is
zero, the function uses the SM_CYICON or SM_CYCURSOR system metric value.
Flags
Specifies a combination of the following values:
Value
| Meaning
| LR_DEFAULTCOLOR
| Uses the default color format.
| LR_MONOCHROME
| Creates a monochrome icon or cursor.
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Return Values
If the function succeeds, the return value is an integer resource identifier
for the icon or cursor that best fits the current display device.
Remarks
A resource file of type RT_GROUP_ICON (RT_GROUP_CURSOR indicates cursors)
contains icon (or cursor) data in several device-dependent and device-independent
formats. LookupIconIdFromDirectoryEx searches the resource file for the icon (or cursor) that best fits the
current display device and returns its integer identifier. The FindResource and FindResourceEx functions use the MAKEINTRESOURCE macro with this identifier to locate the resource in the module.
The icon directory is loaded from a resource file with resource type
RT_GROUP_ICON (or RT_GROUP_CURSOR for cursors), and an integer resource name for the
specific icon to be loaded. LookupIconIdFromDirectoryEx returns an integer identifier that is the resource name of the icon that best
fits the current display device.
The LoadIcon, LoadImage, and LoadCursor functions use this function to search the specified resource data for the
icon or cursor that best fits the current display device.
See Also
CreateIconFromResourceEx, CreateIconIndirect, FindResource, FindResourceEx, GetIconInfo, LoadCursor, LoadIcon, LoadImage, LookupIconIdFromDirectory, MAKEINTRESOURCE
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