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WM BUTTON3DOWN

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Revision as of 04:00, 14 April 2025 by Martini (talk | contribs) (Created page with "This message occurs when the operator presses button 3 on the pointing device. ==Syntax== <pre> param1 POINTS ptspointerpos; Pointer position.: param2 USHORT fsHitTestres; Hit-test result.: USHORT fsflags; Keyboard control codes.: </pre> ==Parameters== ;''ptspointerpos'' (POINTS) - input: Pointer position in window coordinates relative to the bottom-left corner of the window. ;''fsHitTestres'' (USHORT) - input: Hit-test result. Provide...")
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This message occurs when the operator presses button 3 on the pointing device.

Syntax

param1
    POINTS ptspointerpos; /* Pointer position. */

param2
    USHORT fsHitTestres; /* Hit-test result. */
    USHORT fsflags;       /* Keyboard control codes. */

Parameters

ptspointerpos (POINTS) - input
Pointer position in window coordinates relative to the bottom-left corner of the window.
fsHitTestres (USHORT) - input
Hit-test result. Provides the hit-test result, which determined the window to be associated with this message. For details of the possible values, see WM_HITTEST.
fsflags (USHORT) - input
Keyboard control codes. In addition to the control codes described with the WM_CHAR message, the following keyboard control code is valid:
KC_NONE: Indicates that no key is pressed.

Returns

rc (BOOL) - returns
Processed indicator.
TRUE: Message processed
FALSE: Message ignored

Remarks

This message is posted to the application queue associated with the window that is to receive the pointing device button information.

It is the responsibility of the application to ensure that the appropriate frame window is activated and that the focus is to the appropriate window, by using the WinSetFocus function. The keyboard control codes specified by flags reflects the keyboard state at the time the mouse message was initiated. This may or may not reflect the current keyboard state.

Default Processing

The default window procedure processes this message identically to WM_BUTTON1DOWN.