MESSAGE_MAP_COMMAND(IDD_BUTTON_EXIT, OnDialogButtonExitClicked) MESSAGE_MAP(WM_DESTROY, OnDialogDestroy) MESSAGE_MAP(WM_INITDIALOG, OnDialogInit) Return DialogBox(hInstance, MAKEINTRESOURCE(IDD_DIALOGBOX), NULL, DialogProc) īOOL CALLBACK DialogProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) If(ul_reason_for_call = DLL_PROCESS_ATTACH) FIXME: There is a better way by passing the hInstance as a parameter to StartDialogīOOL CALLBACK DialogProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) īOOL OnDialogInit(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) īOOL OnDialogDestroy(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) īOOL OnDialogClose(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) īOOL OnDialogButtonExitClicked(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) īOOL OnDialogButtonSayHiClicked(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) īOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved) Return MessageCallback(hwnd, message, wParam, lParam) ĭllExport INT_PTR STDCALL StartDialog(VOID) If((message = WM_COMMAND) & (LOWORD(wParam) = Identifier))\ #define MESSAGE_MAP_COMMAND(Identifier, MessageCallback)\ Return MessageCallback(hwnd, message, wParam, lParam) You can also use the GET_X_LPARAM or GET_Y_LPARAM macro to extract the x- or y-coordinate.#include " stdafx.h" #include #define MESSAGE_MAP(MessageParam, MessageCallback)\ If the return value is assigned to a variable, you can use the MAKEPOINTS macro to obtain a POINTS structure from the return value. RemarksĪs noted above, the x-coordinate is in the low-order short of the return value the y-coordinate is in the high-order short (both represent signed values because they can take negative values on systems with multiple monitors). Return DefWindowProc(hWnd, msg, wParam, lParam) įor more examples see Windows Classic Samples on GitHub. Example LRESULT CALLBACK WndProc(_In_ HWND hWnd, _In_ UINT msg, _In_ WPARAM wParam, _In_ LPARAM lParam) If an application processes this message, it should return zero. The coordinate is relative to the upper-left corner of the client area. The high-order word specifies the y-coordinate of the cursor. The low-order word specifies the x-coordinate of the cursor. This parameter can be one or more of the following values. Indicates whether various virtual keys are down. Otherwise, the message is posted to the window that has captured the mouse.Ī window receives this message through its WindowProc function. If the mouse is not captured, the message is posted to the window beneath the cursor. Posted when the user presses the left mouse button while the cursor is in the client area of a window.
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