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m_lpfnDrawBackground |
Contains a pointer to the application supplied background handling callback for the tab page.
C++
SFTTABS_DRAWBACKGROUNDPROC CSftTabsPage::m_lpfnDrawBackground;
Comments
The m_lpfnDrawBackground member contains a pointer to the application supplied background handling callback for the tab page.
m_lpfnDrawBackground is used to define the application supplied background handling callback for the tab page.
An application can define a background color for a tab page using the SFTTABS_TAB, colorClientArea member (see SetTabInfo) or define a background bitmap using the SFTTABS_CONTROL, hInsideBitmap member (see SetControlInfo). m_lpfnDrawBackground overrides other background definitions and allows an application to render the background.
CSftTabsPage::m_flagDrawBackground can be used to define additional processing options. CSftTabsPage::m_UserDataBackground is used to define an application defined value that is passed to the background drawing callback m_lpfnDrawBackground as the UserData parameter.
When using C, the SftTabs_TransparentControls function handles background painting.
Windows Mobile Edition: m_lpfnDrawBackground
is not supported.
Example
This example paints a custom tab page background by filling the tab page with a tiled bitmap.
C++
CSamplePage::CSamplePage(CWnd* pParent /*=NULL*/) : CSftTabsPage(CSamplePage::IDD, pParent) { m_lpfnDrawBackground = SamplePage_DrawBackground; m_flagDrawBackground = SFTTABS_DRAWBG_OVERRIDETHEME; m_UserDataBackground = (SFTTABS_DWORD_PTR)this; m_BackgroundBitmap.LoadBitmap(IDB_BACKGROUND); } void CALLBACK SamplePage_DrawBackground(HDC hDC, HWND hwndDlg, HWND hwndTab, SFTTABS_DWORD_PTR UserData) { CSamplePage* pThis = (CSamplePage*)UserData; RECT rect; GetClientRect(hwndDlg, &rect); SftTabs_PaintTiledBitmap(hDC, pThis->m_BackgroundBitmap, 0, 0, &rect); }
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