Replace FX_UINT with unsigned int

fpdfsdk/formfiller/cffl_checkbox.cpp

Index: fpdfsdk/formfiller/cffl_checkbox.cpp
diff --git a/fpdfsdk/formfiller/cffl_checkbox.cpp b/fpdfsdk/formfiller/cffl_checkbox.cpp
index df5e7bfbca8a2d169530a872ff3424c6b3142ac2..9b9245d410ac4add7496ef0ce801e72861079244 100644
--- a/fpdfsdk/formfiller/cffl_checkbox.cpp
+++ b/fpdfsdk/formfiller/cffl_checkbox.cpp
@@ -26,8 +26,8 @@ CPWL_Wnd* CFFL_CheckBox::NewPDFWindow(const PWL_CREATEPARAM& cp,
 }
 
 FX_BOOL CFFL_CheckBox::OnKeyDown(CPDFSDK_Annot* pAnnot,
-                                 FX_UINT nKeyCode,
-                                 FX_UINT nFlags) {
+                                 uint32_t nKeyCode,
+                                 uint32_t nFlags) {
   switch (nKeyCode) {
     case FWL_VKEY_Return:
     case FWL_VKEY_Space:
@@ -37,8 +37,8 @@ FX_BOOL CFFL_CheckBox::OnKeyDown(CPDFSDK_Annot* pAnnot,
   }
 }
 FX_BOOL CFFL_CheckBox::OnChar(CPDFSDK_Annot* pAnnot,
-                              FX_UINT nChar,
-                              FX_UINT nFlags) {
+                              uint32_t nChar,
+                              uint32_t nFlags) {
   switch (nChar) {
     case FWL_VKEY_Return:
     case FWL_VKEY_Space: {
@@ -73,7 +73,7 @@ FX_BOOL CFFL_CheckBox::OnChar(CPDFSDK_Annot* pAnnot,
 
 FX_BOOL CFFL_CheckBox::OnLButtonUp(CPDFSDK_PageView* pPageView,
                                    CPDFSDK_Annot* pAnnot,
-                                   FX_UINT nFlags,
+                                   uint32_t nFlags,
                                    const CFX_FloatPoint& point) {
   CFFL_Button::OnLButtonUp(pPageView, pAnnot, nFlags, point);