GetSysColor / SetSysColors

[Ian Williamson]

Does anyone know if these can be P/Invoked on a CE.NET
4.1 device? If so, which library are they in?

Thanks, Ian

 

[Paul G. Tobey [eMVP]]

Almost everything in the API is in coredll.dll. That's the case here, too.

Paul T.

 

[Ian Williamson]

That is the library I have been referring too, but it
does not seem to have any effect, even when SetSysColors
returns true.

[DllImport("coredll.dll")]
private static extern Int32 GetSysColor(Int32 nIndex);

[DllImport("coredll.dll")]
private static extern Boolean SetSysColors(int cElements,
Int32[] lpaElements, Int32[] lpaRgbValues);

private const int COLOR_ACTIVECAPTION = 19; //menu
background

public void ChangeColor()
{
int[] element = new int[] {COLOR_ACTIVECAPTION};
int[] rgb = new int[] {Color.Red.ToArgb() & 0x00FFFFFF};
bool b = SetSysColors(1, element, rgb);
}

 

[Alex Feinman [MVP]]

I'm not sure, but I bellieve that change in system colors requires soft
reset

That is the library I have been referring too, but it
does not seem to have any effect, even when SetSysColors
returns true.

[DllImport("coredll.dll")]
private static extern Int32 GetSysColor(Int32 nIndex);

[DllImport("coredll.dll")]
private static extern Boolean SetSysColors(int cElements,
Int32[] lpaElements, Int32[] lpaRgbValues);

private const int COLOR_ACTIVECAPTION = 19; //menu
background

public void ChangeColor()
{
int[] element = new int[] {COLOR_ACTIVECAPTION};
int[] rgb = new int[] {Color.Red.ToArgb() & 0x00FFFFFF};
bool b = SetSysColors(1, element, rgb);
}

-----Original Message-----
Almost everything in the API is in coredll.dll. That's the case here, too.

Paul T.




.

 

[Paul G. Tobey [eMVP]]

Your declaration of COLOR_ACTIVECAPTION is way off the mark. If you look at
winuser.h in the PPC SDK or somewhere for COLOR_ACTIVECAPTION, you'll find
that it's

( 2 | SYS_COLOR_INDEX_FLAG)

and SYS_COLOR_INDEX_FLAG is 0x40000000.

If you make that change, it works as expected, except that
COLOR_ACTIVECAPTION is *not* the menu background color; it's the color of
the title bar for windows when they are the active window. I think that you
may want COLOR_MENU, instead, although I haven't tried that.

Paul T.

That is the library I have been referring too, but it
does not seem to have any effect, even when SetSysColors
returns true.

[DllImport("coredll.dll")]
private static extern Int32 GetSysColor(Int32 nIndex);

[DllImport("coredll.dll")]
private static extern Boolean SetSysColors(int cElements,
Int32[] lpaElements, Int32[] lpaRgbValues);

private const int COLOR_ACTIVECAPTION = 19; //menu
background

public void ChangeColor()
{
int[] element = new int[] {COLOR_ACTIVECAPTION};
int[] rgb = new int[] {Color.Red.ToArgb() & 0x00FFFFFF};
bool b = SetSysColors(1, element, rgb);
}

-----Original Message-----
Almost everything in the API is in coredll.dll. That's the case here, too.

Paul T.




.

 

[Serg Kuryata [MS]]

You can use the SystemColors class to get values of system colors. In this
case, you would not need to p/invoke.

Hope this helps,
Sergiy.

This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------
| Content-Class: urn:content-classes:message
| From: "Ian Williamson" <[email protected]>
| Sender: "Ian Williamson" <[email protected]>
| Subject: GetSysColor / SetSysColors
| Date: Fri, 14 Nov 2003 12:29:52 -0800
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|
| Does anyone know if these can be P/Invoked on a CE.NET
| 4.1 device? If so, which library are they in?
|
| Thanks, Ian
|
|
|

 

[Ian Williamson]

Ahh, I was lazy and was assuming that the MSDN
documentation was providing a zero based index with
regards to the list of display elements.

As for COLOR_ACTIVECAPTION, it was simply a constant name
that I lifted from elsewhere and did not bother to change
it, hence why I included the comment so that you would
know that 19 referred to the menu background (well, if it
HAD been a zero based index).

Serge, I will look at your suggestion, but I am not sure
if it will work for what I am trying to do.

For those curious, I need to change the 3D Objects and
Dialog Background colors so that I can control the
ReadOnly background color of a TextBox. Thankfully, this
will be the only application running on the handheld
device, so I will not get unexpected/unwanted results
when these global color changes occur.

Thanks for all the help. Much appreciated.

Cheers, Ian

-----Original Message-----
Your declaration of COLOR_ACTIVECAPTION is way off the mark. If you look at
winuser.h in the PPC SDK or somewhere for

COLOR_ACTIVECAPTION, you'll find

that it's

( 2 | SYS_COLOR_INDEX_FLAG)

and SYS_COLOR_INDEX_FLAG is 0x40000000.

If you make that change, it works as expected, except that
COLOR_ACTIVECAPTION is *not* the menu background color; it's the color of
the title bar for windows when they are the active window. I think that you
may want COLOR_MENU, instead, although I haven't tried that.

Paul T.

That is the library I have been referring too, but it
does not seem to have any effect, even when SetSysColors
returns true.

[DllImport("coredll.dll")]
private static extern Int32 GetSysColor(Int32 nIndex);

[DllImport("coredll.dll")]
private static extern Boolean SetSysColors(int cElements,
Int32[] lpaElements, Int32[] lpaRgbValues);

private const int COLOR_ACTIVECAPTION = 19; //menu
background

public void ChangeColor()
{
int[] element = new int[] {COLOR_ACTIVECAPTION};
int[] rgb = new int[] {Color.Red.ToArgb() & 0x00FFFFFF};
bool b = SetSysColors(1, element, rgb);
}

-----Original Message-----
Almost everything in the API is in coredll.dll.

That's
the case here, too.

Paul T.

Does anyone know if these can be P/Invoked on a CE.NET
4.1 device? If so, which library are they in?

Thanks, Ian




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