reverting back to C++17

Author: cfrankb

dlgtest.cpp

@@ -228,7 +228,7 @@ void CDlgTest::drawScreen() {
     drawFont(bitmap, bx * 8, 2, tmp, PURPLE);
 
     // draw health bar
-    drawRect(bitmap, Rect{.x = 4, .y = bitmap.m_nHei - 10, .width = std::min(game.health() / 2, bitmap.m_nLen - 4), .height = 8}, LIME);
+    drawRect(bitmap, Rect{4, bitmap.m_nHei - 10, std::min(game.health() / 2, bitmap.m_nLen - 4), 8}, LIME);
 
     // show screen
     QPixmap pixmap = frame2pixmap(bitmap);

mapedit.pro

@@ -2,7 +2,7 @@ QT       += core gui
 
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets opengl
 
-CONFIG += c++20
+CONFIG += c++17
 
 # You can make your code fail to compile if it uses deprecated APIs.
 # In order to do so, uncomment the following line.
@@ -86,5 +86,5 @@ RESOURCES += \
 unix:LIBS += -lz
 win32:LIBS += -L"libs" -lzlib
 
-QMAKE_CXXFLAGS_RELEASE += -O3
-QMAKE_CXXFLAGS_DEBUG += -g3
+QMAKE_CXXFLAGS_RELEASE += -std=c++17 -O3
+QMAKE_CXXFLAGS_DEBUG += -std=c++17 -g3