acceptAdjustWindowRectAdjustWindowRectExAngleArcAppendMenuArcArcToBeginPaintbindBitBltBM_GETCHECKBM_SETCHECKButton_GetCheckButton_SetCheckClientToScreenclosesocketconnectCreateCompatibleDCCreateDialogCreateDialogParamCreateFontCreateMenuCreatePenCreatePopupMenuCreateSolidBrushCreateWindowCreateWindowExDefWindowProcDeleteDCDeleteObjectDestroyCursorDestroyIconDestroyMenuDestroyWindowDialogBoxDialogBoxParamDialogProcDispatchMessageDrawIconDrawIconExEdit_HideBalloonTipEdit_ShowBalloonTipEDITBALLOONTIPEllipseEM_HIDEBALLOONTIPEM_SHOWBALLOONTIPEndDialogEndPaintFillRectFrameRectGetArcDirectionGetClientRectGetDlgItemGetDlgItemTextGetMessageGetStockObjectGetSystemMetricsGetTextAlignGetWindowTextGetWindowTextLengthInvalidateRectIsDialogMessageLineTolistenLoadCursorLoadIconLoadImageMAKEINTRESOURCEMessageBoxMoveToExMSGPiePOINTPolygonPolylinePolylineToPolyPolylinePostMessagePostQuitMessagePostThreadMessageRectanglerecvRegisterClassRegisterClassExRoundRectScreenToClientSelectObjectsendSendDlgItemMessageSendMessageSetArcDirectionSetBkColorSetBkModeSetDlgItemTextSetPixelSetTextAlignSetTextColorSetWindowTextShowWindowsocketstrcmpStretchBltstrlenTextOutTrackPopupMenuTrackPopupMenuExTranslateMessageUnregisterClassUpdateWindowwcscmpwcslenWindowProcWinMainWM_CHARWM_CLOSEWM_COMMANDWM_CREATEWM_DESTROYWM_GETTEXTWM_GETTEXTLENGTHWM_INITDIALOGWM_KEYDOWNWM_KEYUPWM_LBUTTONDBLCLKWM_LBUTTONDOWNWM_LBUTTONUPWM_MBUTTONDBLCLKWM_MBUTTONDOWNWM_MBUTTONUPWM_MOUSEHWHEELWM_MOUSEMOVEWM_MOUSEWHEELWM_NCDESTROYWM_NCHITTESTWM_PAINTWM_QUITWM_RBUTTONDBLCLKWM_RBUTTONDBLCLKWM_RBUTTONDOWNWM_RBUTTONUPWM_SETFONTWM_SETTEXTWM_XBUTTONDBLCLKWM_XBUTTONDOWNWM_XBUTTONUPWNDCLASSWNDCLASSEXWSACleanupWSADATAWSAStartupwsprintf
BM_GETCHECK 消息
获取单选或复选框的选中状态。
可以使用宏 Button_GetCheck 更方便的实现相同功能。
声明：
#define BM_GETCHECK 0x00F0
参数
wParam
此参数不被使用，必须为0
lParam
此参数不被使用，必须为0
返回值
类型：LRESULT
根据实际情况，返回值可能是以下之一：
| 值 | 意义 |
|---|---|
| BST_CHECKED | 按钮被选中 |
| BST_INDETERMINATE | 按钮被灰化，表示是中间状态（如果指定了 BS_3STATE 或 BS_AUTO3STATE ） |
| BST_UNCHECKED | 按钮未被选中 |
备注
支持
| 最低桌面系统支持 | Windows Vista |
| 头文件 | Winuser.h (已包含在Windows.h中) |
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