SftButton/DLL 3.0 - Button Control

Windows Messages

In addition to the standard Windows messages (WM_SETFONT, WM_COMMAND, WM_NOTIFY, WM_SETTEXT, WM_GETTEXT, etc.) that a SftButton control understands as a first-class Windows window, the control defines the following custom messages. Most applications use the SftButton_* helper functions instead of sending these messages directly, but the messages are documented here for applications that need to bypass the helper layer.

Message	Value	Description
SFTBUTTONM_GETCONTROLINFO	WM_USER+3	Retrieve the control's SFTBUTTON_CONTROL structure. lParam points to a caller-allocated SFTBUTTON_CONTROL with cbSize set.
SFTBUTTONM_SETCONTROLINFO	WM_USER+7	Apply a SFTBUTTON_CONTROL structure. lParam points to a populated SFTBUTTON_CONTROL.
SFTBUTTONM_GETDESIGN	WM_USER+4	Return the design-mode flag.
SFTBUTTONM_SETDESIGN	WM_USER+8	Set the design-mode flag.
SFTBUTTONM_QUERYCHAR_A	WM_USER+5	Ask whether an ANSI character would be handled as an accelerator.
SFTBUTTONM_QUERYCHAR_W	WM_USER+6	Ask whether a Unicode character would be handled as an accelerator.
SFTBUTTONM_REFRESH	WM_USER+9	Invalidate and repaint the control.
SFTBUTTONM_DOCLICK	WM_USER+10	Synthesize a click on the main button area.
SFTBUTTONM_DOCLICKDROPDOWN	WM_USER+11	Synthesize a click on the dropdown arrow.

The SftButton_QueryChar macro expands to either SFTBUTTONM_QUERYCHAR_A or SFTBUTTONM_QUERYCHAR_W depending on the build's UNICODE setting.

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SftButton/DLL 3.0 - Button Control

Windows Messages