LoadImage problem...

[mark smit]

Hello all...

I am having troubles getting the following function to return a valid icon handle.

hicon = LoadImage(%NULL, ByVal %IDI_WINLOGO, %IMAGE_ICON, 16, 16, %LR_DEFAULTSIZE)

Would anybody out there be able to help me understand why this does not work?

Cheers!

[Chris Boss]

Mark;

You should use the Loadicon function for the builtin Icons.

hIcon&=LoadIcon(0, BYVAL MAKLNG(%IDI_WINLOGO,0))



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[Eric Pearson]

LoadImage will work too, but as I recall you have to use %LR_SHARED for the stock icons because they are "shared" resources.

-- Eric

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[mark smit]

Hello again!

Well, now the icon shows up but it doesn't want to be resized to 16x16 so that it will look right on the status bar.

Any ideas?

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[Chris Boss]

The built-in Icons are not 16 x 16. They are only 32 x 32.

For Icons that look good at 16 x 16, you may have to create your own. If you use a 16 x 16 icon, then you should use LoadImage and not LoadIcon.


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[mark smit]

Hello again...

Well thats all well and good but isn't the windows logo icon on the start button 16x16?

Cheers!

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[Semen Matusovski]

Mark --
Do not mix id for LoadIcon and LoadBitmap

#Compile Exe
#Register None
#Include "Win32Api.Inc"
Function PbMain
    Local hDlg As Long, i As Long
    Dialog New 0 ,"Test",0,0, 70, 140, %DS_CENTER Or %WS_OVERLAPPEDWINDOW To hDlg
    For i = 100 To 105
       Control Add ImgButton, hDlg, 101 + i,  "", 10, 20 * (i- 100)+10, 50, 15
       Control Send hDlg, 101 + i, %BM_SETIMAGE, %IMAGE_ICON, _
       LoadImage(ByVal 0, ByVal i, %IMAGE_ICON, 16, 16, 0)
     Next
    Dialog Show Modal hDlg
End Function

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[Eric Pearson]

Mark --

> isn't the windows logo icon on the start button 16x16?

The Task Bar is a little weird... The Start button is actually a true Button, and that's a Windows Logo bitmap, not an icon. The rest of the Task Bar "buttons" are actually part of a tab control with the button style, and Windows displays icons on the tabs.

And while the IDI_WINLOGO icon actually does contain a 16x16 image (as well as 10x10, 12x12,14x14, 22x22, and 32x32), what you see is what you get. The 16x16 icon just isn't as "pretty" as the Start button's bitmap. (Stock icons are located in USER32.DLL and can be extracted with programs like MicroAngelo if you want to examine them.)

HTH.

-- Eric



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[Semen Matusovski]

Folks --
Is it possible to create non-owndrawn button with text + bitmap/ico ?

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[mark smit]

Hello Semen and others!

I tried your example and it worked, my question is, why does the MSDN documentation say to use the OEM constants to select what icon to display. for example %OIC_WINLOGO. I would also like to know why Microsoft has the same numbers defined twice?

OIC_WINLOGO = 32517
IDI_WINLOGO = 32517

I would like to know where you found the icon numbers in your example. Are there any constants defined for these already?

Cheers!


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[Eric Pearson]

Semen --

You mean like "%BS_TEXT OR %BS_ICON"? The numeric value of %BS_TEXT is zero, so it is not possible to OR it with a value like %BS_BITMAP or %BS_ICON and really accomplish anything. I believe that a non-owner-draw button can contain text or an image, not both.

-- Eric

P.S. I suppose you could simulate a button with text+image by creating a bitmap that included the image of some text.

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[This message has been edited by Eric Pearson (edited March 09, 2000).]

[Semen Matusovski]

Eric --
Yes, I mean something like "%BS_TEXT OR %BS_ICON".
With own-drawn all is clear, but I'm too lazy to do it each time.

Mark --
Icon #: interesting question - I took them from one sample.
In NT4, NT5, Win95b - works, sure.
In Win98 - not tested, but I think works also.

[This message has been edited by Semen Matusovski (edited March 09, 2000).]

[Chris Boss]

Mark;

The reason Microsoft has icon constants with the same numeric value in the API inc file is simply "redundancy". Some constants are used with LoadIcon and others are used with the MessageBox function.

There is actually quite a lot of "Redundancy" in the API.


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