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Fix wxSlider::SetThumbLength() on wxMSW

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It requires TBS_FIXEDLENGTH style.
Call InvalidateBestSize because the size of the control might change.
Call Layout in the widgets sample to adjust to the changed size.
Use GetThumbLength() instead of the arbitrary defined THUMB size.
This commit is contained in:
Maarten Bent
2019-01-31 20:23:38 +01:00
parent 9f9bc40f83
commit 8f3b87dce7
2 changed files with 16 additions and 4 deletions
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8
samples/widgets/slider.cpp
View File

@@ -543,6 +543,14 @@ void SliderWidgetsPage::DoSetThumbLen()
}
m_slider->SetThumbLength(len);
if ( m_slider->GetThumbLength() != len )
{
wxLogWarning(wxString::Format("Invalid thumb length in slider: %d",
m_slider->GetThumbLength()));
}
Layout();
}
// ----------------------------------------------------------------------------

12
src/msw/slider.cpp
View File

@@ -54,8 +54,7 @@ enum
// the gaps between the slider and the labels, in pixels
const int HGAP = 5;
const int VGAP = 4;
// these 2 values are arbitrary:
const int THUMB = 24;
// this value is arbitrary:
const int TICK = 8;
} // anonymous namespace
@@ -194,6 +193,9 @@ WXDWORD wxSlider::MSWGetStyle(long style, WXDWORD *exstyle) const
// TBS_HORZ, TBS_RIGHT and TBS_BOTTOM are 0 but do include them for clarity
msStyle |= style & wxSL_VERTICAL ? TBS_VERT : TBS_HORZ;
// allow setting thumb size
msStyle |= TBS_FIXEDLENGTH;
if ( style & wxSL_BOTH )
{
// this fully specifies the style combined with TBS_VERT/HORZ above
@@ -390,7 +392,7 @@ void wxSlider::DoMoveWindow(int x, int y, int width, int height)
return;
}
const int thumbSize = FromDIP(THUMB);
const int thumbSize = GetThumbLength();
const int tickSize = FromDIP(TICK);
int minLabelWidth,
@@ -540,7 +542,7 @@ wxSize wxSlider::DoGetBestSize() const
{
// this value is arbitrary:
static const int length = FromDIP(100);
const int thumbSize = FromDIP(THUMB);
const int thumbSize = GetThumbLength();
const int tickSize = FromDIP(TICK);
int *width;
@@ -732,6 +734,8 @@ void wxSlider::SetSelection(int minPos, int maxPos)
void wxSlider::SetThumbLength(int len)
{
::SendMessage(GetHwnd(), TBM_SETTHUMBLENGTH, (WPARAM) len, (LPARAM) 0);
InvalidateBestSize();
}
int wxSlider::GetThumbLength() const