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SetLayeredWindowAttributes
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The SetLayeredWindowAttributes function sets the opacity and transparency color key of a layered window. |
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| Code examples: |
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| Declaration: |
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BOOL SetLayeredWindowAttributes(
HWND hwnd,
COLORREF crKey,
BYTE bAlpha,
DWORD dwFlags
);
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| FoxPro declaration: |
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DECLARE INTEGER SetLayeredWindowAttributes IN user32;
INTEGER hwnd,;
INTEGER crKey,;
SHORT bAlpha,;
INTEGER dwFlags
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| Parameters: |
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hwnd
[in] Handle to the layered window.
crKey
[in] COLORREF structure that specifies the transparency color key to be used when composing the layered window.
bAlpha
[in] Alpha value used to describe the opacity of the layered window.
dwFlags
[in] Specifies an action to take: LWA_COLORKEY, LWA_ALPHA |
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| Return value: |
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| If the function succeeds, the return value is nonzero. |
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| My comment: |
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A layered window is created by specifying WS_EX_LAYERED when creating the window with the CreateWindowEx function or by setting WS_EX_LAYERED via SetWindowLong after the window has been created.
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| Word Index links for the SetLayeredWindowAttributes : |
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| Created: | 2004-07-08 15:34:53 | | Modified: | 2005-11-07 21:39:43 |
Visited in last 7 days: 52 |
Creating irregularly shaped FoxPro form using transparency color key 