|
Overview |
|
|
|
Group |
|
|
|
Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| Yes
| Import Library
| -
| Header File
| winuser.h
| Unicode
| No
| Platform Notes
| None
|
|
|
WM_SETREDRAW
An application sends the WM_SETREDRAW message to a window to allow changes in
that window to be redrawn or to prevent changes in that window from being
redrawn.
WM_SETREDRAW
wParam = (WPARAM) fRedraw; // state of redraw flag
lParam = 0; // not used; must be zero
Parameters
fRedraw
Value of wParam. Specifies the state of the redraw flag. If this parameter is TRUE, the
redraw flag is set. If the parameter is FALSE, the flag is cleared.
Return Values
An application should return zero if it processes this message.
Remarks
This message sets or clears the redraw flag. If the redraw flag is cleared,
the content of the given window is not updated after each change, and the window
is not repainted until the redraw flag is set. For example, an application that
must add several items to a list box can clear the redraw flag, add the items,
and then set the redraw flag. Finally, the application can call the InvalidateRect function to cause the list box to be repainted.
See Also
InvalidateRect
Related Links
Software for Delphi and C++ Builder developers
Software for Visual Studio .NET developers
Software for Visual Basic 6 developers
Delphi Tips&Tricks
MegaDetailed.NET
TMS Scripter Studio Pro components for Delphi/C++Builder
More Online Helps
Win32 Multimedia Programmer's Reference (mmedia.hlp)
OLE Programmer's Reference (ole.hlp)
Microsoft Windows Pen API Programmer's Reference (penapi.hlp)
Microsoft Windows Sockets 2 Reference (sock2.hlp)
Microsoft Windows Telephony API (TAPI) Programmer's Reference (tapi.hlp)
Unix Manual Pages
|
