Advanced MFC Programming

Chapter 7. Common Dialog Boxes
DWORD Flags;
LPARAM lCustData;
LPCCHOOKPROC lpfnHook;
LPCTSTR lpTemplateName;
} CHOOSECOLOR;
We can change the custom colors by assigning the address of a COLORREF type array with size of 16 to
member lpCustColors of this structure. The colors in the array will be used to initialize the custom colors.
After the dialog box is closed, we can call function CColorDialog::GetColor() to retrieve the
selected color. Also, if we’ve initialized custom colors, we can obtain the updated values by accessing
member lpCustColors.
Sample
Sample 7.5\CDB demonstrates how to use color dialog box. First a function ColorDialog(…) is added
to class CCDBDoc, which will implement a color dialog box whose default selected color and custom colors
are customized. The following is its definition:
……
……
class CCDBDoc : public CDocument
{
public:
void ColorDialog(COLORREF colorInit, DWORD dwFlags=0);
}
This function has two parameters, the first one specifies the initially selected color, and the second one
specifies the style flags. We will show how to use different style flags later, for the time being we just set
all bits to 0. The function is implemented as follows:
void CCDBDoc::ColorDialog(COLORREF colorInit, DWORD dwFlags)
{
CColorDialog dlg(colorInit);
COLORREF color[16];
COLORREF colorRlt;
CString szStr;
CString szStrRGB;
int i;
dlg.m_cc.Flags|=dwFlags;
for(i=0; i