2.2.7.25 MILCMD_VISUAL_SETCONTENT
The MILCMD_VISUAL_SETCONTENT packet specifies the drawing content that is directly associated with a visual.
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messageSize |
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controlCode |
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targetResource |
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hContent |
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messageSize (4 bytes): A 32-bit unsigned integer. The size of this message in bytes. The value of this field MUST be set to 0x00000010.
controlCode (4 bytes): A 32-bit unsigned integer containing the control code for this message. The value of this field MUST be equal to 0x00000021.
targetResource (4 bytes): A 32-bit unsigned integer. The value of this field MUST be set to a valid resource handle referencing a resource of type TYPE_VISUAL or TYPE_WINDOWNODE. This handle identifies the resource that is the target for this message.
hContent (4 bytes): A 32-bit unsigned integer. The value of this field MUST either be set to zero or to a valid resource handle referencing a resource of type TYPE_RENDERDATA. This resource represents the graphical elements drawn directly by this visual, behind those of its children. If this value is NULL then the specified visual does not draw anything itself, though its properties will still have an effect on the rendering of its child visuals.