Engine4ToolAdapter.StartManipulation Method
Called once for every Windows message, until it returns True and a new user interaction sequence is started.
Thread safety: This property is not thread-safe.
StartManipulation(out MapControlPtr control, System.Int32 msg, IntPtr wParam, IntPtr lParam)
Called once for every Windows message, until it returns True and a new user interaction sequence is started.Syntax
public virtual System.Boolean StartManipulation (
out MapControlPtr control,
System.Int32 msg,
IntPtr wParam,
IntPtr lParam
)Parameters
control
Type: MapControl
The control to which the tool is connected.
The control to which the tool is connected.
msg
Type: System.Int32
The Windows message identifier, e.g. WM_KEYDOWN.
The Windows message identifier, e.g. WM_KEYDOWN.
wParam
Type: IntPtr
The WPARAM property of the Windows message.
The WPARAM property of the Windows message.
lParam
Type: IntPtr
The LPARAM property of the Windows message.
The LPARAM property of the Windows message.
Return Value
Type: System.Boolean
True if the tool should start a new user interaction sequence, False otherwise.
True if the tool should start a new user interaction sequence, False otherwise.
Remarks
Called by the adapter class until it returns True or until the tool is removed from the map control. It should return True when it receives a message that should start a user interaction, otherwise it should return False.
Platforms
Windows