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Fix a regression due to usage of double buffer 

Regression introduced in 5b36e097c2
ref: https://github.com/notepad-plus-plus/notepad-plus-plus/pull/15296#issuecomment-2171221062

Replace WM_PRINTCLIENT with WM_PRINT to avoid black parts when resizing tabbar in light mode.

Close #15319
This commit is contained in:
ozone10 2024-06-18 17:50:03 +02:00 committed by Don Ho
parent 8760dd2c07
commit 90762bbdda
1 changed files with 2 additions and 2 deletions
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4
PowerEditor/src/WinControls/TabBar/TabBar.cpp
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@ -966,8 +966,8 @@ LRESULT TabBarPlus::runProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lPara
{
// Even if the tab bar common control is used directly, e.g. in non-dark mode,
// it suffers from flickering during updates, so let it paint into a back buffer
::CallWindowProc(_tabBarDefaultProc, hwnd, WM_ERASEBKGND, reinterpret_cast<WPARAM>(hdc), 0);
::CallWindowProc(_tabBarDefaultProc, hwnd, WM_PRINTCLIENT, reinterpret_cast<WPARAM>(hdc), PRF_NONCLIENT | PRF_CLIENT);
::DefWindowProc(hwnd, WM_ERASEBKGND, reinterpret_cast<WPARAM>(hdc), 0);
::DefWindowProc(hwnd, WM_PRINT, reinterpret_cast<WPARAM>(hdc), PRF_NONCLIENT | PRF_CLIENT);
_dblBuf.endPaint(hwnd, &ps);
return 0;
}