Windows操作系統(tǒng)定義了系統(tǒng)消息的類型，它通過諸如WM_PAINT之類的符號常量發(fā)送給你的應用程序。該符號常量由兩部分組成，如上例的WM前綴，它標識能處理消息的窗口類型；剩下的PAINT指定當消息接收后該窗口應該做什么。
|
消息前綴 |
對象窗口類型 |
|
ABM |
Application desktop toolbar control |
|
BM |
Button control |
|
CB |
Combo box control |
|
CBEM |
Extended combo box control |
|
CDM |
Common dialog box control |
|
DBT |
Device |
|
DL |
Drag list box control |
|
DM |
Default push button control |
|
DTM |
Date and time picker control |
|
EM |
Edit control |
|
HDM |
Header control |
|
HKM |
Hot key control |
|
IPM |
IP address control |
|
LB |
List box control |
|
LVM |
List view control |
|
MCM |
Month calendar control |
|
PBM |
Progress bar control |
|
PGM |
Pager control |
|
PSM |
Property sheet |
|
RB |
Rebar control |
|
SB |
Status bar control |
|
SBM |
Scroll bar control |
|
STM |
Static control |
|
TB |
Toolbar |
|
TBM |
Trackbar |
|
TCM |
Tab control |
|
TTM |
Tooltip control |
|
TVM |
Tree view control |
|
UDM |
Up-down control |
|
WM |
General window |
