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The MILCMD_VISUAL_SETTRANSFORM packet specifies how the coordinate space of a visual is transformed relative to that of its parent visual.
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messageSize |
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controlCode |
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targetResource |
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hTransform |
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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 0x0000001D.
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.
hTransform (4 bytes): A 32-bit unsigned integer. The value of this field MUST either be set to zero or set to a valid resource handle referencing a resource of type TYPE_TRANSLATETRANSFORM, TYPE_SCALETRANSFORM, TYPE_MATRIXTRANSFORM, or TYPE_TRANSFORMGROUP. This resource represents the transform of the specified visual. If this value is NULL, then the coordinate system of the specified visual is either transformed as specified by a MILCMD_VISUAL_SETOFFSET message or not transformed. Transformation occurs relative to the coordinate system of the specified visual's parent.