Problem Description:

My Qt Windows application crashes when changing display configurations (e.g. resolution changes, multi-monitor setup modifications). The crash occurs specifically in a PmsDialogWidget containing a QWebEngineView, with the call stack indicating ANGLE/D3D11-related operations.

Key Code Snippets:

// Widget initialization
PmsDialogWidget::PmsDialogWidget(QWidget* parent) : QWidget(parent) {
    ui.setupUi(this);
    this->setWindowFlags(Qt::FramelessWindowHint);
    this->setAttribute(Qt::WA_StyledBackground, true);
    
    webView = new QWebEngineView(ui.widgetPms);  // Parent tied to main display
    webChannel = new QWebChannel(ui.widgetPms);
}

Reproduction Steps:

Start application on primary display (1080P @ 100% scaling) Connect secondary display (2K @ 100% scaling) Drag window between displays Change display resolution on either monitor Crash occurs during ANGLE device reset Observed Behavior:

ACCESS_VIOLATION in libGLESv2.dll during glWaitSync ANGLE logs show DXGI_ERROR_DEVICE_REMOVED Crash specifically occurs when parent window spans different DPI displays Environment:

Qt 5.15.2 with ANGLE backend Windows 11 22H2 NVIDIA RTX 750i

STACK_TEXT:
0000006abe6f4510 00007ffd46d2cf53 : 0000000000000000 0000006abe6f4810 0000000000007ff3 0000000000000018 : libGLESv2!glWaitSync+0x43e64 0000006abe6f4750 00007ffd46d2cdb3 : 0000000000000000 0000000000000000 0000000000000000 0000000000040102 : libGLESv2!ANGLEResetDisplayPlatform+0xbb2b3 0000006abe6f47e0 00007ffd770fb643 : 0000000000000001 0000000080000012 0000006abe6f49f8 0000000000040102 : libGLESv2!ANGLEResetDisplayPlatform+0xbb113 0000006abe6f4830 00007ffd770fa7a3 : 000001f026e523b0 00007ffd46d2cd50 0000000000000005 0000000000000000 : user32!UserCallWinProcCheckWow+0x503 0000006abe6f4990 00007ffd770fc0bf : 0000000000040102 0000000000000000 0000000000000000 0000000004380780 : user32!SendMessageWorker+0x223 0000006abe6f4a40 00007ffd770fbd44 : 0000000000040102 00007ffd77118765 000001f028270900 000001f026e523b0 : user32!RealDefWindowProcWorker+0x2df 0000006abe6f4b00 00007ffd721d77f4 : 000001f028270900 0000000000000000 0000006abe6f4c50 0000000000000000 : user32!RealDefWindowProcW+0x134 0000006abe6f4b50 00007ffd721d7741 : 0000000000000000 0000000000000000 0000000000000000 0000006abe6f5350 : uxtheme!_ThemeDefWindowProc+0xa4 0000006abe6f4ca0 00007ffd770fba8a : 000061d53d82b859 0000000000000000 000001f039fcc510 0000000000000000 : uxtheme!ThemeDefWindowProcW+0x11 0000006abe6f4ce0 00007ffd651d44f8 : 0000000000000000 0000000000000047 0000000000000001 00007ffd7829a05e : user32!DefWindowProcW+0xca 0000006abe6f4d40 00007ffd770fb643 : 0000000080000012 0000000000040102 0000000100000000 0000000080000012 : qwindows+0x144f8

I want to know Why it happened and how can I solve it.