Re: Problem with SetTextColor - C / C++ / MFC Discussion Boards

Antti Keskinen31-May-04 11:46

31-May-04 11:46

For just about complete control: Capture WM_PAINT messages.

Using this mode, however, you need to paint everything yourself. Familiarize yourself with the Platform GDI commands, which allow you to paint just about everything from lines to edges and to rectangles. Heck, you can even draw a standard button by using DrawEdge().

It takes time to make it completely custom drawn, but once you have accomplished this once, you are a BIG LEAP forward on learning how to make even more customized controls. I suggest taking this trip, as it will prove most fruitfull.

-Antti Keskinen

----------------------------------------------
The definition of impossible is strictly dependant
on what we think is possible.

Re: Costom Draw Problem!!!

VirgoCI31-May-04 17:48

VirgoCI

31-May-04 17:48

thanks antti. i tried to refrain of using WM_PAINT cuz i knew i will have to redraw the whole ctrl from scratch. (i am abit lazy)
oh well... guess it's "build it your self in 21 From Scratch" time. Big Grin | :-D

smtp question

includeh1031-May-04 8:16

includeh10

31-May-04 8:16

we sent our customers emails by smtp for 4 times in 2 months, by several university customers complained that they didn't receive our emails.

we guess the reason is that smtp servers of universities don't accept our emails because we are not in their mail list - is this right?

thanks

includeh10

Re: smtp question

bryce31-May-04 15:10

bryce

31-May-04 15:10

you would have to ask the universities, if your other customers all received their emails and the uni people didnt it would seem you emails might be getting tagged at spam
bryce

---
Publitor, making Pubmed easy.
http://www.sohocode.com/publitor

Problem with SetTextColor

Aviv Halperin31-May-04 7:50

Aviv Halperin

31-May-04 7:50

Hi,

I have a dialog with a few edit controls.
I want to set the text of one control to red and the rest should not change.

Now if I call the pDC->SetTextColor(RGB(255,0,0)) in the OnCtlColor message handler of the dialog this changes the text color for all the edit controls in the dialog.

If I call the following code:
CDC *pDC = EditToChangeTextColor.GetDC();
pDC->SetTextColor(RGB(255,0,0));

nothing changes.

Does anyone know if there is a way to change the text collor only for one control in the dialog?

Thanks.

avivhal

Re: Problem with SetTextColor

Brian D31-May-04 8:15

Brian D

31-May-04 8:15

How about surrounding the call with:

if(pWnd->GetDlgCtrlID() == IDC_EDIT1)

or switch the results out.

BD

"You know "that look" women get when they want sex? Me neither."

--Steve Martin

Re: Problem with SetTextColor

includeh1031-May-04 8:21

includeh10

31-May-04 8:21

it is not correct.
you must call SetTextColor() inside of OnPaint() of your control

includeh10

Re: Problem with SetTextColor

f6431-May-04 8:22

f64

31-May-04 8:22

Hi Check the MSDN fot CWnd::OnCtlColor, it even has a example of what you are asking. You just have to verify the message is for the control you want to change, otherwise do nothing.

Extracted form the MSDN

// This OnCtlColor handler will change the color of a static control
// with the ID of IDC_MYSTATIC. The code assumes that the CMyDialog
// class has an initialized and created CBrush member named m_brush.
// The control will be painted with red text and a background
// color of m_brush.

HBRUSH CZilchDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) 
{
   // Call the base class implementation first! Otherwise, it may
   // undo what we're trying to accomplish here.
   HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

   <big>// Are we painting the IDC_MYSTATIC control? We can use
  // CWnd::GetDlgCtrlID() to perform the most efficient test.</big>   
   if (pWnd->GetDlgCtrlID() == IDC_MYSTATIC)
   {
      // Set the text color to red
      pDC->SetTextColor(RGB(255, 0, 0));

      // Set the background mode for text to transparent 
      // so background will show thru.
      pDC->SetBkMode(TRANSPARENT);

      // Return handle to our CBrush object
      hbr = m_brush;
   }

   return hbr;
}

Fabian

Re: Problem with SetTextColor

Aviv Halperin31-May-04 9:16

Aviv Halperin

31-May-04 9:16

Thanks now its working fine,
I dont know how I missed this example in the MSDN (should have thought of it myself anyway), I only found a very general one with no reference as to the caller.
Is it possible maybe to call SetTextColor from outside OnCtlColor?
I tried it in various places and handlers but it did not seem to work(including in the OnPaint handler).
Maybe the attributes set for the DC fonts color are blocked when called from outside this segment of code...

Thanks again.

avivhal

documentation of jpeg format

includeh1031-May-04 6:54

includeh10

31-May-04 6:54

hi all,

i need good docs about jpeg format, i have to create my own file format for compressing bmp file based on jpeg.
all i have are poor jpeg docs from internet.

thanks for any link to better docs of jpeg format
cheers

includeh10

Re: documentation of jpeg format

Nirav Doshi31-May-04 9:11

Nirav Doshi

31-May-04 9:11

Try:
The Programmer's File Format Collection.

http://www.wotsit.org/[^]

* Don't wish it was easier, wish you were better! *

Re: documentation of jpeg format

includeh1031-May-04 9:49

includeh10

31-May-04 9:49

it looks useful.
thanks

includeh10

Re: documentation of jpeg format

Nirav Doshi31-May-04 22:23

Nirav Doshi

31-May-04 22:23

I forgot to mention yesterday, you can get latest info about JPEG from the organization's official site too:

http://www.jpeg.org[^]

* Don't wish it was easier, wish you were better! *

Gradients

Archer28231-May-04 6:35

Archer282

31-May-04 6:35

Can someone point me to an artical that shows you how to draw gradients on a DC?

Re: Gradients

f6431-May-04 8:00

f64

31-May-04 8:00

Hi Check GradientFill() on the Win32 API documentation.

Fabian

Re: Gradients

TrungHuynh31-May-04 13:24

TrungHuynh

31-May-04 13:24

you can do follow:

void CBMSButton::GradientFillRect(HDC hDC, RECT& rc, COLORREF crLight, COLORREF crDark)
{
TRIVERTEX vert[2];
GRADIENT_RECT gRect;
vert [0].x = rc.left;
vert [0].y = rc.top;
vert [0].Red = GetRValue(crLight) << 8;
vert [0].Green = GetGValue(crLight) << 8;
vert [0].Blue = GetBValue(crLight) << 8;
vert [0].Alpha = 0x0000; // It's no use for GradientFill

vert [1].x = rc.right;
vert [1].y = rc.bottom;
vert [1].Red = GetRValue(crDark) << 8;
vert [1].Green = GetGValue(crDark) << 8;
vert [1].Blue = GetBValue(crDark) << 8;
vert [1].Alpha = 0x0000;

gRect.UpperLeft = 0;
gRect.LowerRight = 1;
GradientFill(hDC, vert, 2 , &gRect, 1, GRADIENT_FILL_RECT_V);
}

You must import library:
#pragma message(" Automatically linking with MSIMG32.LIB library")
#pragma comment(lib, "MSIMG32.LIB")

Re: Gradients The Best

Sumit Kapoor31-May-04 18:04

Sumit Kapoor

31-May-04 18:04

Hi Dear...Try this..

----------------------------------------
CRect rect,rcClient;
GetClientRect(rcClient);
rect = rcClient;
int r1=32,g1=108,b1=244; //Any start color
int r2=5,g2=55,b2=165; //Any stop color

for(int i=0;i<rect.width();i++)
{=""
="" int="" r,g,b;
="" r="r1" +="" (i="" *="" (r2-r1)="" rect.width());
="" g="g1" (g2-g1)="" b="b1" (b2-b1)="" pdc-="">FillSolidRect(i,0,1,rect.Height(),RGB(r,g,b));
}

-------------------------------------------
This is not mine code, I'm also user of this code...but work nice...
OK! Good Bye

---Sumit Kapoor--- sumit_kapoor1980@hotmail.com

Re: Gradients The Best

Archer28231-May-04 18:09

Archer282

31-May-04 18:09

yes, i found that artical earlier today, and i got it to work, but i had to put the code in the OnPaint overide

but there is one thing i dont get about this formula

r1 + (i * (r2-r1) / rect.Width());

i know what it does, and why its needed, but i dont understand how the writer came up with it.

Re: Gradients The Best

Sumit Kapoor31-May-04 19:25

Sumit Kapoor

31-May-04 19:25

Actually...
The writer do very nice thing in this code..
as u can see.. we ca make shading from any color to other in fix area.. this is only possible if we change color according to side of area..that is what he is doing..
change color but with eyes on area..
OK bye...

Never consider anything Impossible before trying to solve that..---Sumit Kapoor---

Re: Gradients The Best (Mistake due to HTML)

Sumit Kapoor31-May-04 18:19

Sumit Kapoor

31-May-04 18:19

hi..
for loop in above code consider < as HTML TAG

so replace that with:

for(int i=0;i<rect.Width();i++)

---Sumit Kapoor---

Re: Gradients

Rick York1-Jun-04 10:37

Rick York

1-Jun-04 10:37

This article shows one method : http://www.codeproject.com/samples/fortune.asp[^]

__________________________________________
a two cent stamp short of going postal.

How to add Controls in CView

RedDragon2k31-May-04 4:59

RedDragon2k

31-May-04 4:59

Hi!

How can I create Controls in a CView Class ???
Please Help

MFG
RedDragon

Unix and C are the ultimate computer viruses.

Visit me: www.programming.info.ms

Re: How to add Controls in CView

valikac31-May-04 6:54

valikac

31-May-04 6:54

What controls?

Kuphryn

Re: How to add Controls in CView

includeh1031-May-04 6:58

includeh10

31-May-04 6:58

you can add any controls to CView with style WS_CHILD and the CView as its parent - the control can be CDialog also if use function Create() - not DoModal().

cheers

includeh10

Re: How to add Controls in CView

David Crow1-Jun-04 4:03

David Crow

1-Jun-04 4:03

Sounds like you need a CFormView instead.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

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