Re: Convert to BW - C / C++ / MFC Discussion Boards

Re: How can I display current time in dialog static control

SandipG 5-Jun-08 23:40

SandipG

5-Jun-08 23:40

You guys dont like _strdate and _strtime functions, do you?? Smile | :)

Regards,
Sandip.

Re: How can I display current time in dialog static control

Maximilien5-Jun-08 7:45

Maximilien

5-Jun-08 7:45

Why do you do this in the OnPaint ?

SetDlgItemText(IDC_STATIC,(LPCTSTR)str);

you want to print str or buf ?

This signature was proudly tested on animals.

Re: How can I display current time in dialog static control

amistry_petlad5-Jun-08 7:51

amistry_petlad

5-Jun-08 7:51

ya buf i have chnaged , the code is working but its not display the hh:mm:yy its only shows current hours in the static control

<br />
 GetLocalTime(&time);<br />
  char str[256]; <br />
 <br />
 sprintf(str,"%d:%d:%d",time.wHour,time.wMinute,time.wSecond);<br />
 <br />
 std::string str1(str);<br />
 int len;<br />
 int slength = (int)str1.length() + 1;<br />
 len = MultiByteToWideChar(CP_ACP, 0, str1.c_str(), slength, 0, 0);<br />
 wchar_t* buf = new wchar_t[len];<br />
 MultiByteToWideChar(CP_ACP, 0, str1.c_str(), slength, buf, len);<br />
 SetDlgItemText(IDC_STATIC1,(LPCTSTR)buf);<br />

Re: How can I display current time in dialog static control

messages5-Jun-08 5:35

messages

5-Jun-08 5:35

Can you show your code,please?

Re: How can I display current time in dialog static control

amistry_petlad5-Jun-08 7:53

amistry_petlad

5-Jun-08 7:53

the code working but display hours only i have increased the size of control but still not able to see the entire string

<br />
 GetLocalTime(&time);<br />
  char str[256]; <br />
 <br />
 sprintf(str,"%d:%d:%d",time.wHour,time.wMinute,time.wSecond);<br />
 <br />
 std::string str1(str);<br />
 int len;<br />
 int slength = (int)str1.length() + 1;<br />
 len = MultiByteToWideChar(CP_ACP, 0, str1.c_str(), slength, 0, 0);<br />
 wchar_t* buf = new wchar_t[len];<br />
 MultiByteToWideChar(CP_ACP, 0, str1.c_str(), slength, buf, len);<br />
 SetDlgItemText(IDC_STATIC1,(LPCTSTR)buf);<br />

Re: How can I display current time in dialog static control

Hamid_RT6-Jun-08 1:13

Hamid_RT

6-Jun-08 1:13

You can set size of font for this control.

Convert to BW

vandana75-Jun-08 5:03

vandana7

5-Jun-08 5:03

How to convert grayscale image(.tif )to black & white ?

Re: Convert to BW

enhzflep5-Jun-08 17:06

enhzflep

5-Jun-08 17:06

To do that, you just need to de-saturate the image.
The RGB colour-space does not easily lend itself to this operation, and the HSL colour model is far more useful here.

In an entirely non optimized method, you would:

Repeat loop for all pixels in source image
(1) convert pixel RGB to HSL
(2) drop the S value to 0
(3) convert back to RGB
(4) dump the converted pixel back

Here's some routines for colour-space conversion:

// Input: h, s, v in range [0..1]
// Outputs: r, g, b in range [0..1]
void hsvToRgb(float h, float s, float v, float *r, float *g, float *b)
{
     int i;
     float aa, bb, cc, f;
     
     if (s == 0.0) // greyscale
        *r = *g = *b = v;
     else
     {
         if (h == 1.0) h = 0.0;
         h *= 6.0;
         i = floor(h);
         f = h - (float)i;
         aa = v * (1.0 - s);
         bb = v * (1.0 - (s * f));
         cc = v * (1.0 - (s * (1.0 - f)));
         switch(i)
         {
           case 0: *r = v; *g = cc; *b = aa; break;
           case 1: *r = bb; *g = v; *b = aa; break;
           case 2: *r = aa; *g = v; *b = cc; break;
           case 3: *r = aa; *g = bb; *b = v; break;
           case 4: *r = cc; *g = aa; *b = v; break;
           case 5: *r = v; *g = aa; *b = bb; break;
         }
     }
}
           
#define myMin(a,b) (a<b?a:b)>
#define myMax(a,b) (a>b?a:b)
#define noHue 0

// Inputs: r, g, b in range [0..1]
// Outputs: h, s, v in range [0..1]
void rgbToHsv(float r, float g, float b, float *h, float *s, float *v)
{
     float max = myMax(r, myMax(g, b)), min = myMin(r, myMin(g, b));
     float delta = max - min;
     
     *v = max;
     if (max != 0.0)
        *s = delta / max;
     else 
          *s = 0.0;
     if (*s == 0.0) *h = noHue;
     else
     {
         if (r == max)
            *h = (g - b) / delta;
         else if (g == max)
            *h = 2 + (b - r) / delta;
         else if (b == max)
            *h = 4 + (r - g) / delta;
         *h *= 60.0;
         if (*h < 0) *h += 360.0;
         *h /= 360.0;
     }
}
</b?a:b)>

I'll leave it to you to make them work with RGB values in the range [0..255]

Re: Convert to BW

Nibu babu thomas5-Jun-08 17:19

Nibu babu thomas

5-Jun-08 17:19

enhzflep wrote:
Here's some routines for colour-space conversion:

These functions does the same, right?

ColorRGBToHLS
ColorHLSToRGB

Nibu thomas
Microsoft MVP for VC++

Code must be written to be read, not by the compiler, but by another human being.

Programming Blog: http://nibuthomas.wordpress.com

Re: Convert to BW

enhzflep5-Jun-08 17:35

enhzflep

5-Jun-08 17:35

$Shucks | :-\$
After looking at: http://msdn.microsoft.com/en-us/library/bb773851(VS.85).aspx[^]
It would certainly appear so. In fact, they'd be even better, since they deal with WORDs instead of floats.

That'll teach me for using a 11 year old API help file..
Thanks for the better solution.

Re: Convert to BW

Nibu babu thomas5-Jun-08 17:37

Nibu babu thomas

5-Jun-08 17:37

enhzflep wrote:
That'll teach me for using a 11 year old API help file..

Nibu thomas
Microsoft MVP for VC++

Code must be written to be read, not by the compiler, but by another human being.

Programming Blog: http://nibuthomas.wordpress.com

BHO failing in Windows 2003 Server

tony_Udz5-Jun-08 3:34

tony_Udz

5-Jun-08 3:34

Hello,

I have written a BHO for explorer.exe.
It is working fine with Win XP but same code is not working with Windows 2003 Server.

Does anybody has any idea about this?

Regards,
Tony

Re: BHO failing in Windows 2003 Server

led mike5-Jun-08 4:27

led mike

5-Jun-08 4:27

tony_udz wrote:
but same code is not working with Windows 2003 Server.

Oh, it's not working? Well that explains a lot. Thanks for all the specific information. Roll eyes | :rolleyes:

led mike

Re: BHO failing in Windows 2003 Server

tony_Udz5-Jun-08 20:56

tony_Udz

5-Jun-08 20:56

I mean to say BHO Dll is not loaded when exlorer.exe is laucnched.
If you have any idea about this please let me know.

My concern is that is ther any significant difference between Win XP and Win 2003 Server with reference to BHo.

Re: BHO failing in Windows 2003 Server

led mike6-Jun-08 4:56

led mike

6-Jun-08 4:56

tony_udz wrote:
I mean to say BHO Dll is not loaded when exlorer.exe is laucnched.

And how did you determine that?
Is it listed in the add-ons list?

led mike

Re: BHO failing in Windows 2003 Server

tony_Udz8-Jun-08 18:12

tony_Udz

8-Jun-08 18:12

Actually, to debug this dll i have inserted a MessageBox() in every function,
For e.g.

In windows XP flow is as follows: -

When dll is registered flow is as follows: -
1) DllMain.
2) Dll Register Server.
3) Dll Main.

When you open Explorer.exe
1) Dll Main.
2) Dll GetCLassObject.
3) SetSite.

When you close Explorer.exe
1) Dll Can Unload.
2) DllMain.

But in Windows 2003 flow is as follows: -

When dll is registered flow is as follows: -

1) DllMain.
2) Dll Register Server.
3) Dll Main.

When you open Explorer.exe
No call to DLLMain.
I dont know for few unknown reason DLLMain could not be called.

Please let me know if you have still not understood the problem.

Re: BHO failing in Windows 2003 Server

tony_Udz8-Jun-08 23:53

tony_Udz

8-Jun-08 23:53

I found the problem.

In Windows Server 2003, i had to enable 'Enable Third Party Browser' from
Tools-> Internet Options --> Advanced --> Enable Third Party browser extensions (requires restart).

Thanks for your help!!

Date ??

Trupti Mehta5-Jun-08 3:07

Trupti Mehta

5-Jun-08 3:07

In a textbox, I have associated a var of type CString. I want to set it as " / / " & make sure that the user can change or edit /, just add nos & done. What type of formatting should I do and plz show an small eg. if possible. Reqs is for CE.

Also, I need to show a dialog for few mins & then close it. How do I end up doing that part in CE.

Thanks

Terry

Re: Date ??

David Crow5-Jun-08 3:13

David Crow

5-Jun-08 3:13

Sounds like you need a "masked" edit control.

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: Date ??

Trupti Mehta5-Jun-08 3:57

Trupti Mehta

5-Jun-08 3:57

David, eVC++4 & CE doesn't support masked edit control. So, Is their any other better way to deal with the issue.

Thanks

Terry

Re: Date ??

David Crow5-Jun-08 4:02

David Crow

5-Jun-08 4:02

Trupti Mehta wrote:
eVC++4 & CE doesn't support masked edit control.

How so?

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: Date ??

Trupti Mehta5-Jun-08 4:40

Trupti Mehta

5-Jun-08 4:40

David, check out this:
http://www.tech-archive.net/Archive/DotNet/microsoft.public.dotnet.framework.compactframework/2005-01/0499.html[^]

At first I checked in eVC4 help, din't find any thing like that. In the Control Box, can't find any control for Masked edit.

On searching for "Masked Edit CE" in google found links where people complain for masked edit not working or not working properly.

Other than the above, I have reached on CE & found that masked edit controls are not compatible with all smart devices.

Based on these resources I am telling that eVc4 & Ce doesn't support Masked.

If you have any way out, I would defintly try for one but not third party.

Thanks

Terry

Re: Date ??

David Crow5-Jun-08 5:31

David Crow

5-Jun-08 5:31

Trupti Mehta wrote:
In the Control Box, can't find any control for Masked edit.

It's not a built-in control. You'll have to roll your own. CP has dozens of examples.

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Coding tools, precautions for Windows CE

Kwanalouie5-Jun-08 3:01

Kwanalouie

5-Jun-08 3:01

I do programming using Visual C/C++. A friend wanted a couple very simple functions his small hand held phone/PC could perform. He said his device was Windows CE compatible. Basically, he wanted two things. Ability to enter some data via the keypad and have a simple math result calculated and displayed, and also the ability to send data to his phone and have a simple math result displayed when selected.
I don't understand what the best development tool would be for something like this, and what things I should be wary of.
I would like to do the initial development using my Visual C++ 6.0 on my desk top PC, and then transform the code to move to the Windows CE environment.
Any suggestions?
Thanks!

Draw on view

baerten5-Jun-08 2:35

baerten

5-Jun-08 2:35

Hi everybody,

i want to draw an effect on a view, which seems like the view is locked.
The whole view should be dark.

Till now, i made it this way:

<pre>void MyView::OnDraw(CDC* pDC)
{
for(int lin=0; lin<height; lin+=2) {
for(int col=0; col<width; col+=2 {
pDC->SetPixel(col,lin,RGB(0,0,0));
}
}
}</pre>

it works for the background, but the controls on the view are drawn correctly.
It's logical that only the background is "colored" this way.

But how is it possible to draw on the entire view with'in the controls?

Big thanks for any help Smile | :)

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.