ITaskbarList3::ThumbBarSetImageList method
Specifies an image list that contains button images for a toolbar embedded in a thumbnail image of a window in a taskbar button flyout.
Syntax
HRESULT ThumbBarSetImageList( [in] HWND hwnd, [in] HIMAGELIST himl );
Parameters
- hwnd [in]
-
Type: HWND
The handle of the window whose thumbnail representation contains the toolbar to be updated. This handle must belong to the calling process.
- himl [in]
-
Type: HIMAGELIST
The handle of the image list that contains all button images to be used in the toolbar.
Return value
Type: HRESULT
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Remarks
Applications must provide these button images:
- The button in its default active state.
- Images suitable for use with high-dpi (dots per inch) displays.
Images must be 32-bit and of dimensions GetSystemMetrics(SM_CXICON) x GetSystemMetrics(SM_CYICON). The toolbar itself provides visuals for a button's clicked, disabled, and hover states.
Examples
The following example shows how to create a thumbnail toolbar with two buttons whose images come from an image list.
HRESULT AddThumbarButtons(HWND hwnd, HIMAGELIST himl, HIMAGELIST himlHot)
{
// Define an array of two buttons. These buttons provide images through an
// image list and also provide tooltips.
DWORD dwMask = THB_BITMAP | THB_TOOLTIP | THB_FLAGS;
THUMBBUTON thbButtons[2];
thbButtons[0].dwMask = dwMask;
thbButtons[0].iId = 0;
thbButtons[0].iBitmap = 0;
thbButtons[0].pszTip = TEXT("Button 1");
thbButtons[0].dwFlags = THBF_DISMISSONCLICK;
dwMask = THB_BITMAP | THB_TOOLTIP;
thbButtons[1].dwMask = dwMask;
thbButtons[1].iId = 1;
thbButtons[1].iBitmap = 1;
thbButtons[1].pszTip = TEXT("Button 2");
// Create an instance of ITaskbarList3
ITaskBarList3 *ptbl;
HRESULT hr = CoCreateInstance(CLSID_TaskbarList,
NULL,
CLSCTX_INPROC_SERVER,
IID_PPV_ARGS(&ptbl);
if (SUCCEEDED(hr))
{
// Declare the image list that contains the button images.
hr = ptbl->ThumbBarSetImageList(hwnd, himl);
if (SUCCEEDED(hr))
{
// Attach the toolbar to the thumbnail.
hr = ptbl->ThumbBarAddButtons(hwnd, ARRAYSIZE(thbButtons), &thbButtons);
}
ptbl->Release();
}
return hr;
}
Requirements
|
Minimum supported client |
Windows 7 [desktop apps only] |
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Minimum supported server |
Windows Server 2008 R2 [desktop apps only] |
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Header |
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IDL |
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Library |
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DLL |
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See also
- ITaskbarList
- ITaskbarList2
- ITaskbarList3
- ITaskbarList3::ThumbBarAddButtons
- ITaskbarList3::ThumbBarUpdateButtons
- Taskbar Extensions