Drawing in Dialogs Windows

[mvillara]

Does anyone know how to draw the typical shapes such as circles, lines, etc... in a CDialog Window? How can I create a Device Context that point to that Dialog?

If you know too, how can I obtain a device context that point to a CButton Area of Drawing within the class?

Thanks.

 

[emperorevil]

why not make it a bitmap and use that

 

[DrkPaladin]

Graphics:

CClient dlgDC;//'dlgDC' is the name of the device context

//***Create a pen***
//draws a solid red line of width 2
CPen penRed(PS_SOLID, 2, RGB(255, 0, 0));
CPen *pOldPen = NULL;
//Select a Pen
pOldPen = dlgDC.SelectObject(&penRed);

//***Create a Brush***
//fills with Blue
CBrush brBlue(RGB(0, 0, 255));
CBrush *pOldBrush = NULL;
//select brush
pOldBrush = dlgDC.SelectObject(&brBlue);

//***Draw Shapes***
//Set a Pixel
dlgDC.SetPixel(x, y, RGB(255, 0, 0));
//Draw a line from 'Start Point' to (x, y)
dlgDC.LineTo(x, y);
//Draw a Rectangle
dlgDC.Rectangle(x1, y1, x2, y2);
//Draw a Rectangle with round corners
dlgDC.RoundRect(x1, y1, x2, y2, radius1, radius2);
//Draw Circle
dlgDC.Ellipse(x1, y1, x2, y2);
//Draw a Chord
dlgDC.Chord(x1, y1, x2, y2, line_x1, line_y1, line_x2,
line_y2);
//Move to a spot, can be used with 'LineTo' to create a
'Start Point'
dlgDC.MoveTo(x, y);

Hope this Helps.

 

[DrkPaladin]

Change
"CClient dlgDC;"
to
CClientDC dlgDC;

 

[mvillara]

Thanks for your time DrkPaladin.

The problem is that CClientDC needs to be invoked by its default constructor that is the next one:

CClientDC::CClientDC( CWnd * )

So, my problem is that I can not find a function that can supply me a handle (CWnd *) that point to a Dialog Box Window.

If you want to try it, create a simple Hello Application with Dialogs, and then try to write into the MyCDialog source code a small code that try to paint a line in that window.... you will see that its not so easy as I thought. Please such as if you find the solution or not, please could you answer me?

Thanks.

 

[ZakiMaksyutov]

1) create MFC-based dialog application;
2) catch WM_PAINT message (do it with ClassWizard);
3) put code written by DrkPalladin in function OnPaint...

 

[mvillara]

Ok, Perfect.

Many Thanks.