Looking for a long time find only set background monochrome,
M_mschart1. GetBackdrop (.) GetFill () SetStyle (1);
M_mschart1. GetBackdrop (.) GetFill () GetBrush () GetFillColor (). The Set (255255, 0);
I want to change the background image, consult a great god how?

CodePudding user response:

Since the drawing is to learn the skills in the morning and evening,

CodePudding user response:

https://stackoverflow.com/questions/17321587/mfc-set-a-background-image-on-a-control

CodePudding user response:

reference 1st floor zhao4zhong1 response:

custom painting is to learn the skills in the morning and evening,

Zhao four teacher can give a detailed steps? I built on the basis of mschart after class, in OnCtlColor and ondrawItem set the following two ways don't work,
1. The pDC - & gt; SetBkMode (TRANSPARENT);
Return HBRUSH (GetStockObject (NULL_BRUSH));

2. GetWindowRect (& amp; RcColorListBox);//get the static text box of rectangular
PParent=GetParent ();//static text frame's parent window
If (pParent) {
PParent - & gt; The ScreenToClient (& amp; RcColorListBox);//the transition to the parent window area coordinates.
PParent - & gt; The RedrawWindow (& amp; RcColorListBox);//to the parent window to redraw
}

CodePudding user response:

refer to the second floor oyljerry response:

https://stackoverflow.com/questions/17321587/mfc-set-a-background-image-on-a-control

According to the rewriting, or didn't appear transparent effect, did not change the background color to come...
The CBrush m_br;
M_br. CreateSolidBrush (RGB (0, 255));

LRESULT CMschartbg: : WindowProc (UINT message, WPARAM WPARAM, LPARAM LPARAM)
{
If (: : GetDlgCtrlID (lParam) (HWND)==IDC_MSCHART1)
{HWND HWND=(HWND) lParam;
HDC HDC=(HDC) wParam;
The RECT rc;
: : GetClientRect (hWnd, & amp; Rc);
HBRUSH hOldBrush=(HBRUSH) : : SelectObject (hDC, m_br);
: : a Rectangle (hDC, rc. Left, rc, top, rc. Right, rc, bottom);
: : SelectObject (hDC, hOldBrush);

}
//return (LRESULT) m_br. GetSafeHandle ();
Return the CWnd: : WindowProc (message, wParam, lParam);
}

CodePudding user response:

I am a novice, please give a detailed point slightly

CodePudding user response:

TransparentBlt
AlphaBlend function
?