Drezil/imgui
1
0
Fork 0
mirror of https://github.com/Drezil/imgui.git synced 2025-07-13 08:19:55 +02:00
Code Issues Packages Projects Releases Wiki Activity

Viewport, Platform, Examples: Added support for transparent window via PlatformIO Platform_SetWindowAlpha (#1542) + fixes for GLFW 3.3

Browse Source
This commit is contained in:
omar
2018-04-05 17:06:23 +02:00
parent 84c6ea0cee
commit 72899318e6
4 changed files with 41 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
examples/imgui_impl_win32.cpp
View File

@ -472,6 +472,24 @@ static void ImGui_ImplWin32_SetWindowTitle(ImGuiViewport* viewport, const char*
::SetWindowTextA(data->Hwnd, title);
}
static void ImGui_ImplWin32_SetWindowAlpha(ImGuiViewport* viewport, float alpha)
{
ImGuiViewportDataWin32* data = (ImGuiViewportDataWin32*)viewport->PlatformUserData;
IM_ASSERT(data->Hwnd != 0);
IM_ASSERT(alpha >= 0.0f && alpha <= 1.0f);
if (alpha < 1.0f)
{
DWORD style = ::GetWindowLongW(data->Hwnd, GWL_EXSTYLE) | WS_EX_LAYERED;
::SetWindowLongW(data->Hwnd, GWL_EXSTYLE, style);
::SetLayeredWindowAttributes(data->Hwnd, 0, (BYTE)(255 * alpha), LWA_ALPHA);
}
else
{
DWORD style = ::GetWindowLongW(data->Hwnd, GWL_EXSTYLE) & ~WS_EX_LAYERED;
::SetWindowLongW(data->Hwnd, GWL_EXSTYLE, style);
}
}
static float ImGui_ImplWin32_GetWindowDpiScale(ImGuiViewport* viewport)
{
ImGuiViewportDataWin32* data = (ImGuiViewportDataWin32*)viewport->PlatformUserData;
@ -543,6 +561,7 @@ static void ImGui_ImplWin32_InitPlatformInterface()
platform_io.Platform_SetWindowSize = ImGui_ImplWin32_SetWindowSize;
platform_io.Platform_GetWindowSize = ImGui_ImplWin32_GetWindowSize;
platform_io.Platform_SetWindowTitle = ImGui_ImplWin32_SetWindowTitle;
platform_io.Platform_SetWindowAlpha = ImGui_ImplWin32_SetWindowAlpha;
platform_io.Platform_GetWindowDpiScale = ImGui_ImplWin32_GetWindowDpiScale;
// Register main window handle