SetPictureFromMemory method
Remarks
Changes at runtime one of the button pictures loading its data from a picture stored in memory in BMP format.
Syntax
Visual Basic
control.SetPictureFromMemory (index as enumPictures, pDataInMemory as string, datasize as long) as integer
Visual C++
BOOL control.SetPictureFromMemory (long index, VARIANT pDataInMemory, long datasize);
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Parameter
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Description
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index
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Numerical value that represents the index of the picture property to change. Supported values are the following:
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Mnemonic constant
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Value
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Meaning
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PICTURE_NORMAL
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0
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PICTURE_PRESSED
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1
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PICTURE_MOUSEOVER
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2
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PICTURE_CUSTOM
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3
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PICTURE_TEXTURE
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4
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PICTURE_DISABLED
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5
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pDataInMemory
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Variant parameter containing the pointer to picture data previously loaded in memory.
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datasize
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Numerical value that represents the data size in bytes.
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Visual Basic example
Dim bitspict As String
Dim length As Integer
bitspict = LoadResData(xxx, 2)
length = LenB(bitspict)
BtnEnh1.SetPictureFromMemory PICTURE_NORMAL, bitspict, length
With this code the
Picture property will be changed using a bitmap identified by xxx (contained in a .RES file).
Visual C++ example
VARIANT va;
VariantInit (&va);
va.vt = VT_BYREF | VT_UI1;
va.pbVal = (BYTE *) pointer_to_bitmap_in_memory;
BtnEnh1.SetPictureFromMemory (PICTURE_NORMAL, va, size_of_data);
With this code the
Picture property will be changed using a bitmap previously loaded in memory.
Return value
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Value
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Meaning
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FALSE
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The operation failed
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TRUE
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The operation was successful
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