Vcl.Controls.TCMDrag
From RAD Studio API Documentation
Delphi
TCMDrag = record Msg: Cardinal; MsgFiller: TDWordFiller; DragMessage: TDragMessage; Unused1: Byte; Unused2: TWordFiller; DragRec: PDragRec; Result: LRESULT; end;
C++
struct DECLSPEC_DRECORD TCMDrag { public: unsigned Msg; #ifndef _WIN64 #else /* _WIN64 */ Winapi::Messages::TDWordFiller MsgFiller; #endif /* _WIN64 */ TDragMessage DragMessage; System::Byte Unused1; Winapi::Messages::TWordFiller Unused2; TDragRec *DragRec; NativeInt Result; };
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
record struct |
public | Vcl.Controls.pas Vcl.Controls.hpp |
Vcl.Controls | Vcl.Controls |
Description
TCMDrag is used with a CM_DRAG message.
An object of type TCMDrag is used with a CM_DRAG message. The following table lists the fields contained by TCMDrag:
| Field | Meaning |
|---|---|
|
Msg |
Represents the Windows message code. |
|
DragMessage |
Indicates the type of drag operation executed by the control. |
|
Reserved1 |
Unused. |
|
Reserved2 |
Unused. |
|
DragRec |
Is a pointer to a structure that contains information about the dragged object. |
|
Result |
Holds the value returned by the application processing the message. |
The TCMDrag type is used internally.