2.2.2.4.10.1.28 ScreenBlt
The ScreenBlt order contains a bit-block transfer between regions of the screen.
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pControlFlags |
OrderType (optional) |
FieldBytes |
Bounds (13 bytes, optional) |
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nLeftRect (optional) |
nTopRect (optional) |
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nWidth (optional) |
nHeight (optional) |
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bRop (optional) |
nXSrc (optional) |
nYSrc (optional) |
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pControlFlags (1 byte): MUST be set to the value OE2_CF_STANDARD_ENC from the OE2 Control Flags enumeration. If the order differs in type from the last order that was sent, this field contains the bitwise AND of the value OE2_CF_TYPE_CHANGE. If the bounding rectangle has changed since the last order of the same type, this field contains the bitwise AND of the value OE2_CF_BOUNDS. If the coordinates of the bounding rectangle are specified as deltas from the last bounding rectangle that was used, this field contains the bitwise AND of the value OE2_CF_DELTACOORDS.
OrderType (1 byte): If the order differs in type from the last, this field MUST contain the value OE2_SCRBLT_ORDER from the Order Types enumeration. If the order is the same type as the last, this field is not present.
FieldBytes (1 byte): An 8-bit field, with each bit indicating which of the fields that follow the Bounds field is present. A bit set to 1 indicates that the field is present and its value has changed since the same order type was last sent.
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Where the bits are defined as:
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Value
Description
A
The nLeftRect value is present.
B
The nTopRect value is present.
C
The nWidth value is present.
D
The nHeight value is present.
E
The bRop value is present.
F
The nXSrc value is present.
G
The nYSrc value is present.
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The bits that are marked with 0 MUST be 0.
Bounds (13 bytes): A byte array of a BoundsData structure. This field is present only if the pControlFlags field contains the bitwise AND of the value OE2_CF_BOUNDS from the OE2 Control Flags enumeration.
nLeftRect (2 bytes): This value MUST be present if the corresponding bit from the FieldBytes field is set. This represents the x-coordinate of the left edge of the target rectangle.
nTopRect (2 bytes): This value MUST be present if the corresponding bit from the FieldBytes field is set. This represents the y-coordinate top edge of the target rectangle.
nWidth (2 bytes): This value MUST be present if the corresponding bit from the FieldBytes field is set. This represents the width, in pixels, of the target rectangle.
nHeight (2 bytes): This value MUST be present if the corresponding bit from the FieldBytes field is set. This represents the height, in pixels, of the target rectangle.
bRop (1 byte): This value MUST be present if the corresponding bit from the FieldBytes field is set. This represents the high-order byte of a Windows GDI ternary raster operation code.<23>
nXSrc (2 bytes): This value MUST be present if the corresponding bit from the FieldBytes field is set. This represents the x-coordinate of the left side of the source rectangle.
nYSrc (4 bytes): This value MUST be present if the corresponding bit from the FieldBytes field is set. This represents the y-coordinate of the top side of the source rectangle.