|
Overview |
|
|
|
Group |
|
|
|
Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| Yes
| Import Library
| -
| Header File
| winuser.h
| Unicode
| No
| Platform Notes
| None
|
|
|
WM_MOUSEACTIVATE
The WM_MOUSEACTIVATE message is sent when the cursor is in an inactive window
and the user presses a mouse button. The parent window receives this message
only if the child window passes it to the DefWindowProc function.
WM_MOUSEACTIVATE
hwndTopLevel = (HWND) wParam; // handle of top-level parent
nHittest = (INT) LOWORD(lParam); // hit-test value
uMsg = (UINT) HIWORD(lParam); // mouse message
Parameters
hwndTopLevel
Value of wParam. Identifies the top-level parent window of the window being activated.
nHittest
Value of the low-order word of lParam. Specifies the hit-test value returned by the DefWindowProc function as a result of processing the WM_NCHITTEST message. For a list of
hit-test values, see WM_NCHITTEST.
uMsg
Value of the high-order word of lParam. Specifies the identifier of the mouse message generated when the user
pressed a mouse button. The mouse message is either discarded or posted to the
window, depending on the return value.
Return Values
The return value specifies whether the window should be activated and whether
the identifier of the mouse message should be discarded. It must be one of the
following values:
Value
| Meaning
| MA_ACTIVATE
| Activates the window, and does not discard the mouse message.
| MA_ACTIVATEANDEAT
| Activates the window, and discards the mouse message.
| MA_NOACTIVATE
| Does not activate the window, and does not discard the mouse message.
| MA_NOACTIVATEANDEAT
| Does not activate the window, but discards the mouse message.
|
Default Action
The DefWindowProc function passes the message to a child window's parent window before any
processing occurs. The parent window determines whether to activate the child
window. If it activates the child window, the parent window should return TRUE to
prevent the system from processing the message further.
See Also
DefWindowProc, WM_NCHITTEST
Programming books recommended by Amazon.com
More programming books on Amazon.com
|
Share this page
|
|
Follow us
|
| Last news from Greatis Software |
 |
|
Nostalgia .Net |
|
.Net is powerful, but not all-powerful, so sometimes we need to use Win32 API for our .Net applications. It's simple enough with Platform Invoke if you have Win32 skill, but we do not always have time to dig the ancient documentation, declare the special types that are compatible with Win32, find the values of the Win32's constants and so on. Nostalgia .Net offers several simple-to-use classes, and components that will allow you to forget about the headache of Win32 and just use the power of Win32 in your application the same way as you use the native. Net classes. More » |
| Recommended software for developers |
 |
|
Ultimate Pack |
|
Component pack for Delphi and C++ Builder that contains runtime form designer, runtime object inspector, print suite and much more for the very special price. More » |
 |
|
Form Designer .Net |
|
Unique runtime form design solution that allows to edit any form in .Net WinForms application at runtime with full source codes for only 300 euro! More » |
 |
|
Print Suite .Net |
|
Print Suite .Net is a set of components for easy printing texts, images and grids from your WinForms applications. Full C# source codes are available More » |
 |
|
Gradient Controls .Net |
|
Gradient Controls .Net offers controls with gradient background feature. Labels, panels and so on... Full C# source codes are available More » |
 |
|
Greatis iGrid |
|
iGrid plots drawing grid right over your desktop, so you can use it everywhere, with any drawing application without any special plugins for different graphic editors. More » |
All the contacts and projectsDmitry Vasiliev (just.dmitry)
Related LinksSoftware for Visual Studio .NET developers
Software for Delphi and C++ Builder developers
Software for Visual Basic 6 developers
Delphi Tips&Tricks
MegaDetailed.NET More Online Helps Win32 Programmer's Reference
Win32 Multimedia Programmer's Reference
OLE Programmer's Reference
Microsoft Windows Pen API Programmer's Reference
Microsoft Windows Sockets 2 Reference
Microsoft Windows Telephony API (TAPI) Programmer's Reference
Unix Manual Pages
|
