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| GetObject The GetObject function obtains information about a specified graphics object. VB4-32,5,6
Declare Function GetObject Lib "gdi32" Alias "GetObjectA" (ByVal hObject As Long, ByVal nCount As Long, lpObject As Any) As Long |
| Operating Systems Supported |
| Requires Windows NT 3.1 or later; Requires Windows 95 or later |
· hgdiobj
A handle to the graphics object of interest. This can be a handle to one of the following: a logical bitmap, a brush, a font, a palette, a pen, or a device independent bitmap created by calling the CreateDIBSection function.
· cbBuffer
Specifies the number of bytes of information to be written to the buffer.
· lpvObject
Points to a buffer that is to receive the information about the specified graphics object.
The following table shows the type of information the buffer receives for each type of graphics object you can specify with hgdiobj:
HBITMAP
BITMAP
HBITMAP returned from a call to CreateDIBSection
DIBSECTION, if cbBuffer is set to sizeof(DIBSECTION), or BITMAP, if cbBuffer is set to sizeof(BITMAP)
HPALETTE
a WORD count of the number of entries in the logical palette
HPEN returned from a call to ExtCreatePen
EXTLOGPEN
HPEN
LOGPEN
HBRUSH
LOGBRUSH
HFONT
LOGFONT
If the lpvObject parameter is NULL, the function return value is the number of bytes required to store the information it writes to the buffer for the specified graphics object. |
If the function succeeds, and lpvObject is a valid pointer, the return value is the number of bytes stored into the buffer.
If the function succeeds, and lpvObject is NULL, the return value is the number of bytes required to hold the information the function would store into the buffer.
If the function fails, the return value is zero. To get extended error information, call GetLastError. |
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