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[v2, windows] Do not show caption buttons if frameless and translucent+transparency (#1152)

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stffabi 2022-02-16 08:53:17 +01:00 committed by GitHub
parent e6424dc8ab
commit 331e0268a3
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1 changed files with 10 additions and 4 deletions
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14
v2/internal/frontend/desktop/windows/window.go
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@ -147,12 +147,18 @@ func (w *Window) WndProc(msg uint32, wparam, lparam uintptr) uintptr {
if w.frontendOptions.Frameless {
switch msg {
case w32.WM_ACTIVATE:
// If we want to have a frameless window but with border, extend the client area outside of the window. This
// Option is not affected by returning 0 in WM_NCCALCSIZE.
// As a result we have hidden the titlebar but still have the default border drawn.
// If we want to have a frameless window but with the default frame decorations, extend the DWM client area.
// This Option is not affected by returning 0 in WM_NCCALCSIZE.
// As a result we have hidden the titlebar but still have the default window frame styling.
// See: https://docs.microsoft.com/en-us/windows/win32/api/dwmapi/nf-dwmapi-dwmextendframeintoclientarea#remarks
if winoptions := w.frontendOptions.Windows; winoptions != nil && winoptions.EnableFramelessBorder {
if err := dwmExtendFrameIntoClientArea(w.Handle(), w32.MARGINS{-1, -1, -1, -1}); err != nil {
// -1: Adds the default frame styling (aero shadow and e.g. rounded corners on Windows 11)
// Also shows the caption buttons if transparent ant translucent but they don't work.
// 0: Adds the default frame styling but no aero shadow, does not show the caption buttons.
// 1: Adds the default frame styling (aero shadow and e.g. rounded corners on Windows 11) but no caption buttons
// are shown if transparent ant translucent.
margins := w32.MARGINS{1, 1, 1, 1} // Only extend 1 pixel to have the default frame styling but no caption buttons
if err := dwmExtendFrameIntoClientArea(w.Handle(), margins); err != nil {
log.Fatal(fmt.Errorf("DwmExtendFrameIntoClientArea failed: %s", err))
}
}