下拉按钮可以是普通 (BTNS_DROPDOWN 样式) ,在按钮图像旁边显示箭头 (BTNS_WHOLEDROPDOWN 样式) ,或显示与图像 (TBSTYLE_EX_DRAWDDARROWS 样式) 分隔的箭头。 如果使用分隔箭头,则仅当用户单击按钮的箭头部分时,才会发送TBN_DROPDOWN。 如果用户单击按钮的main部分,则会发送带有按钮 ID 的WM_COMMAND消息,就像使用...
TBN_DROPDOWN TBN_DUPACCELERATOR TBN_ENDADJUST TBN_ENDDRAG TBN_GETBUTTONINFO TBN_GETDISPINFO TBN_GETINFOTIP TBN_GETOBJECT TBN_HOTITEMCHANGE TBN_INITCUSTOMIZE TBN_MAPACCELERATOR TBN_QUERYDELETE TBN_QUERYINSERT TBN_RESET TBN_RESTORE TBN_SAVE TBN_TOOLBARCHANGE ...
This message is sent by a toolbar control when the user clicks a button that uses the TBSTYLE_DROPDOWN style. It is sent in the form of a WM_NOTIFY message.Syntax复制 TBN_DROPDOWN lpnmtb = (LPNMTOOLBAR) lParam; Parameterslpnmtb Long pointer to an NMTOOLBAR structure that contains ...
TBN_DROPDOWN lpnmtb = (LPNMTOOLBAR) lParam; Parameters lpnmtb Long pointer to anNMTOOLBARstructure that contains information about this notification. For this message, only thehdrandiItemmembers of this structure are valid. Return Values
TBN_DROPDOWN lpnmtb = (LPNMTOOLBAR) lParam; Parameters lpnmtb Long pointer to anNMTOOLBARstructure that contains information about this notification. For this message, only thehdrandiItemmembers of this structure are valid. Return Value
This message is sent by a toolbar control when the user clicks a button that uses the TBSTYLE_DROPDOWN style. It is sent in the form of a WM_NOTIFY message.SyntaxCopy TBN_DROPDOWN lpnmtb = (LPNMTOOLBAR) lParam; Parameterslpnmtb Long pointer to an NMTOOLBAR structure that contains ...
在CMainFrame::OnToolbarDropDown修改 void CMainFrame::OnToolbarDropDown(NMHDR* pnmhdr, LRESULT *plr){ LPNMTOOLBAR pnmtb = reinterpret_cast<LPNMTOOLBAR>(pnmhdr);...}
TBN_DROPDOWN AI Skills Fest April 8 – May 28, 2025 立即報名 關閉警示 Learn 登入 我們不會再定期更新此內容。 如需此產品、服務、技術或 API 的支援資訊,請參閱Microsoft 產品生命週期。 建議的版本 關閉警示 閱讀英文 新增至集合 新增至計劃...
TBN_DROPDOWN lpnmtb = (LPNMTOOLBAR) lParam; Parameters lpnmtb Long pointer to anNMTOOLBARstructure that contains information about this notification. For this message, only thehdrandiItemmembers of this structure are valid. Return Value
TBN_DROPDOWN lpnmtb = (LPNMTOOLBAR) lParam; 參數 lParam NMTOOLBAR結構的指標,其中包含此通知程式碼的相關資訊。 在此通知程式碼中,只有 這個結構的 hdr 和iItem 成員有效。 傳回值 傳回下列其中一值: 展開表格 傳回碼描述 TBDDRET_DEFAULT 已處理下拉式清單。 TBDDRET_NODEFAULT 未處理下拉式清單...