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Examples: DirectX10, DirectX11: Using SetCapture/ReleaseCapture to get correct behavior (#1375)

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ps: DirectX 12 example (#302) may want to adopt that as well.
This commit is contained in:
omar 2017-10-23 09:46:49 +02:00
parent 3e0765ee22
commit a96f095deb
2 changed files with 44 additions and 14 deletions
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29
examples/directx10_example/imgui_impl_dx10.cpp
View File

@ -225,28 +225,43 @@ void ImGui_ImplDX10_RenderDrawLists(ImDrawData* draw_data)
ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release(); ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release();
} }
IMGUI_API LRESULT ImGui_ImplDX10_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lParam) static bool IsAnyMouseButtonDown()
{
ImGuiIO& io = ImGui::GetIO();
for (int n = 0; n < ARRAYSIZE(io.MouseDown); n++)
if (io.MouseDown[n])
return true;
return false;
}
IMGUI_API LRESULT ImGui_ImplDX10_WndProcHandler(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{ {
ImGuiIO& io = ImGui::GetIO(); ImGuiIO& io = ImGui::GetIO();
switch (msg) switch (msg)
{ {
case WM_LBUTTONDOWN: case WM_LBUTTONDOWN:
if (!IsAnyMouseButtonDown()) ::SetCapture(hwnd);
io.MouseDown[0] = true; io.MouseDown[0] = true;
return true; return true;
case WM_RBUTTONDOWN:
if (!IsAnyMouseButtonDown()) ::SetCapture(hwnd);
io.MouseDown[1] = true;
return true;
case WM_MBUTTONDOWN:
if (!IsAnyMouseButtonDown()) ::SetCapture(hwnd);
io.MouseDown[2] = true;
return true;
case WM_LBUTTONUP: case WM_LBUTTONUP:
io.MouseDown[0] = false; io.MouseDown[0] = false;
return true; if (!IsAnyMouseButtonDown()) ::ReleaseCapture();
case WM_RBUTTONDOWN:
io.MouseDown[1] = true;
return true; return true;
case WM_RBUTTONUP: case WM_RBUTTONUP:
io.MouseDown[1] = false; io.MouseDown[1] = false;
return true; if (!IsAnyMouseButtonDown()) ::ReleaseCapture();
case WM_MBUTTONDOWN:
io.MouseDown[2] = true;
return true; return true;
case WM_MBUTTONUP: case WM_MBUTTONUP:
io.MouseDown[2] = false; io.MouseDown[2] = false;
if (!IsAnyMouseButtonDown()) ::ReleaseCapture();
return true; return true;
case WM_MOUSEWHEEL: case WM_MOUSEWHEEL:
io.MouseWheel += GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1.0f : -1.0f; io.MouseWheel += GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1.0f : -1.0f;

29
examples/directx11_example/imgui_impl_dx11.cpp
View File

@ -232,28 +232,43 @@ void ImGui_ImplDX11_RenderDrawLists(ImDrawData* draw_data)
ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release(); ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release();
} }
IMGUI_API LRESULT ImGui_ImplDX11_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lParam) static bool IsAnyMouseButtonDown()
{
ImGuiIO& io = ImGui::GetIO();
for (int n = 0; n < ARRAYSIZE(io.MouseDown); n++)
if (io.MouseDown[n])
return true;
return false;
}
IMGUI_API LRESULT ImGui_ImplDX11_WndProcHandler(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{ {
ImGuiIO& io = ImGui::GetIO(); ImGuiIO& io = ImGui::GetIO();
switch (msg) switch (msg)
{ {
case WM_LBUTTONDOWN: case WM_LBUTTONDOWN:
if (!IsAnyMouseButtonDown()) ::SetCapture(hwnd);
io.MouseDown[0] = true; io.MouseDown[0] = true;
return true; return true;
case WM_RBUTTONDOWN:
if (!IsAnyMouseButtonDown()) ::SetCapture(hwnd);
io.MouseDown[1] = true;
return true;
case WM_MBUTTONDOWN:
if (!IsAnyMouseButtonDown()) ::SetCapture(hwnd);
io.MouseDown[2] = true;
return true;
case WM_LBUTTONUP: case WM_LBUTTONUP:
io.MouseDown[0] = false; io.MouseDown[0] = false;
return true; if (!IsAnyMouseButtonDown()) ::ReleaseCapture();
case WM_RBUTTONDOWN:
io.MouseDown[1] = true;
return true; return true;
case WM_RBUTTONUP: case WM_RBUTTONUP:
io.MouseDown[1] = false; io.MouseDown[1] = false;
return true; if (!IsAnyMouseButtonDown()) ::ReleaseCapture();
case WM_MBUTTONDOWN:
io.MouseDown[2] = true;
return true; return true;
case WM_MBUTTONUP: case WM_MBUTTONUP:
io.MouseDown[2] = false; io.MouseDown[2] = false;
if (!IsAnyMouseButtonDown()) ::ReleaseCapture();
return true; return true;
case WM_MOUSEWHEEL: case WM_MOUSEWHEEL:
io.MouseWheel += GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1.0f : -1.0f; io.MouseWheel += GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1.0f : -1.0f;